├── .eslintrc.json
├── .gitignore
├── CONTRIBUTE.md
├── README.md
├── impulses
    ├── Sweetspot1M.wav
    ├── impulse_guitar.wav
    ├── impulse_rev.wav
    └── ir_rev_short.wav
├── package-lock.json
├── package.json
├── tests
    ├── README.md
    ├── server.js
    └── tests.js
├── tuna-min.js
└── tuna.js


/.eslintrc.json:
--------------------------------------------------------------------------------
 1 | {
 2 |     "rules": {
 3 |         "indent": [2, 4],
 4 |         "quotes": [2, "double"],
 5 |         "semi": [2, "always"],
 6 |         "no-console": [0]
 7 |     },
 8 |     "env": {
 9 |         "browser": true
10 |     },
11 |     "extends": "eslint:recommended"
12 | }
13 | 


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/.gitignore:
--------------------------------------------------------------------------------
1 | tests/bower_components
2 | .DS_Store
3 | node_modules/
4 | index.html
5 | song.mp3
6 | drums.wav
7 | .idea/


--------------------------------------------------------------------------------
/CONTRIBUTE.md:
--------------------------------------------------------------------------------
 1 | Contributing
 2 | ====
 3 | Tuna.js is supposed to be an open source effort, so all pull requests are welcome. We're always looking for more effects, but there's a need for tests as well. Any other creative ideas are also welcome, of course.
 4 | 
 5 | The intent of the project is to create an extensive library of audio effects that can be used in any Web Audio application. There's no intent to do more than that.
 6 | 
 7 | If you've created an application that uses Tuna - feel free to add a pull request to add a link and short description of you application in the main README.md file!
 8 | 
 9 | Who's pressing the red button?
10 | ====
11 | Tuna.js began as a hobby project of mine, @Theodeus, and were eventually brought in under the @Dinahmoe umbrella. The framework was further developed at @Dinahmoe, with the help of Alessandro Saccoia, while I was working there and finally released as open source as Jam With Chrome launched. The project then stagnated for a while until I left @Dinahmoe and was graciously allowed to keep maintaining the project.
12 | 
13 | Along with me is @tencircles who's the current Technical Director at @Dinahmoe, and @alesaccoia, freelancing DSP guru.
14 | 


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/README.md:
--------------------------------------------------------------------------------
 1 | tuna
 2 | ====
 3 | 
 4 | An audio effects library for the Web Audio API.
 5 | 
 6 | <img src="https://i.chzbgr.com/completestore/12/9/4/rjttPiC7WE6S4Bi22aYp1A2.jpg" alt="tuna, tuna, tuna"/>
 7 | 
 8 | Effect list:
 9 | ====
10 | <ul>
11 |     <li>Overdrive (6 different algorithms)</li>
12 |     <li>Filter</li>
13 |     <li>Cabinet</li>
14 |     <li>Delay</li>
15 |     <li>Convolver (Reverb)</li>
16 |     <li>Compressor</li>
17 |     <li>WahWah</li>
18 |     <li>Tremolo</li>
19 |     <li>Phaser</li>
20 |     <li>Chorus</li>
21 |     <li>Bitcrusher</li>
22 |     <li>Moog Filter</li>
23 |     <li>Ping Pong Delay</li>
24 |     <li>Panner (needs polyfilling, see Panner section [in the wiki] (https://github.com/Theodeus/tuna/wiki)</li>
25 |     <li>Gain</li>
26 | </ul>
27 | 
28 | Usage
29 | ====
30 | 
31 | ```
32 | npm install tunajs
33 | ```
34 | 
35 | Check the wiki: https://github.com/Theodeus/tuna/wiki/Getting-started
36 | 
37 | Or a live example: http://codepen.io/Theodeus/pen/oxKjmy?editors=0010
38 | 
39 | In the wild
40 | ===
41 | This is a very incomplete list of places where Tuna.js is used.
42 | 
43 | http://www.jamwithchrome.com/ - Jam With Chrome allows you to jam online with your mates across the globe using an assortment of instruments and effects. There's even a mode for dummies!
44 | 
45 | https://github.com/selfrefactor/tuna-player - A React.js/Electron wrapper around Tuna.js!
46 | 
47 | https://slasher.chillertv.com/ - interactive experience for the TV show Slasher
48 | 
49 | http://looplabs.com/beta - Looplabs is a collaborative cloud based music studio that lets anyone, regardless of technical skills or ability, quickly and easily make professional quality music anywhere, anytime and with anyone.
50 | 
51 | http://www.websynths.com/ - Browser-based microtonal midi instrument
52 | 
53 | https://www.npmjs.com/package/react-music - Make music with React!
54 | 
55 | http://bapjs.org/ - Beat making toolkit
56 | 
57 | https://github.com/jamespfarrell/json-to-web-audio - Make music from Json with json-to-web-audio
58 | 
59 | http://errozero.co.uk/acid-machine/ - Acid Machine 2, which is exactly what it sounds like! Add up to two Tuna effects per instrument.
60 | 


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/impulses/Sweetspot1M.wav:
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https://raw.githubusercontent.com/Theodeus/tuna/7d55eb95515f1aba6f51b2efe26efbd20bd2163a/impulses/Sweetspot1M.wav


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/impulses/impulse_guitar.wav:
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https://raw.githubusercontent.com/Theodeus/tuna/7d55eb95515f1aba6f51b2efe26efbd20bd2163a/impulses/impulse_guitar.wav


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/impulses/impulse_rev.wav:
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https://raw.githubusercontent.com/Theodeus/tuna/7d55eb95515f1aba6f51b2efe26efbd20bd2163a/impulses/impulse_rev.wav


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/impulses/ir_rev_short.wav:
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https://raw.githubusercontent.com/Theodeus/tuna/7d55eb95515f1aba6f51b2efe26efbd20bd2163a/impulses/ir_rev_short.wav


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--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "tunajs",
 3 |   "version": "1.0.15",
 4 |   "description": "Audio effects library for the Web Audio API",
 5 |   "main": "tuna.js",
 6 |   "directories": {
 7 |     "test": "tests"
 8 |   },
 9 |   "scripts": {
10 |     "test": "echo \"Error: no test specified\" && exit 1",
11 |     "uglify": "uglifyjs tuna.js -o tuna-min.js",
12 |     "patch": "npm version patch && npm publish"
13 |   },
14 |   "repository": {
15 |     "type": "git",
16 |     "url": "git+https://github.com/Theodeus/tuna.git"
17 |   },
18 |   "keywords": [
19 |     "web audio",
20 |     "audio effects",
21 |     "tuna",
22 |     "tunajs",
23 |     "tuna.js"
24 |   ],
25 |   "author": "Oskar Eriksson",
26 |   "license": "MIT",
27 |   "bugs": {
28 |     "url": "https://github.com/Theodeus/tuna/issues"
29 |   },
30 |   "homepage": "https://github.com/Theodeus/tuna#readme",
31 |   "devDependencies": {
32 |     "eslint": "^5.6.1",
33 |     "express": "^4.17.1",
34 |     "uglify-js": "^3.4.9"
35 |   },
36 |   "dependencies": {}
37 | }
38 | 


--------------------------------------------------------------------------------
/tests/README.md:
--------------------------------------------------------------------------------
1 | # Running tests
2 | 
3 | Tests depend on the [Jasmine](http://jasmine.github.io/) testing framework,
4 | currently using v. 2.3.4, and are run in the browser. The Jasmine files are loaded on the fly from the CloudFlare CDN. 
5 | 
6 | [Express](https://expressjs.com/) is needed for running a basic local server. Run ```npm install express``` to install it. Then run ```node server.js``` in the tests folder to start the server. Finally, navigate to http://localhost:8000 in your browser to run the tests.npm 
7 | 
8 | To debug the effects audibly, please see [Tuna test](https://github.com/Theodeus/tunatest) - simple GUI to debug and preview the Tuna effects.


--------------------------------------------------------------------------------
/tests/server.js:
--------------------------------------------------------------------------------
1 | const express = require('express');
2 | const path = require('path');
3 | const app = express();
4 | app.use(express.static(__dirname));
5 | app.use(express.static(path.join(__dirname, '..')));
6 | app.listen(8000, () => console.log('Tuna Test is listening on port 8000!'));


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/tests/tests.js:
--------------------------------------------------------------------------------
  1 | describe("In Tuna", function() {
  2 |     var context, tuna;
  3 | 
  4 |     beforeAll(function(done) {
  5 |         //start AudioContext and then tests on button press
  6 |         document.getElementById("start").addEventListener("click", function() {
  7 |             context = new AudioContext();
  8 |             tuna = new Tuna(context);
  9 |             setTimeout(function checkCurrentTime() {
 10 |                 if (context.currentTime > 0) {
 11 |                     done();
 12 |                 } else {
 13 |                     setTimeout(checkCurrentTime, 100);
 14 |                 }
 15 |             }, 100);
 16 |         });
 17 |     });
 18 | 
 19 |     describe("a Bitcrusher node", function() {
 20 |         var bitcrusher;
 21 | 
 22 |         beforeEach(function() {
 23 |             bitcrusher = new tuna.Bitcrusher();
 24 |         });
 25 | 
 26 |         it("will have default values set", function() {
 27 |             expect(bitcrusher.bits).toEqual(4);
 28 |             expect(bitcrusher.normfreq).toBeCloseTo(0.1, 1);
 29 |             expect(bitcrusher.bufferSize).toEqual(4096);
 30 |             expect(bitcrusher.bypass).toBeFalsy();
 31 |         });
 32 | 
 33 |         it("will have passed values set", function() {
 34 |             bitcrusher = new tuna.Bitcrusher({
 35 |                 bits: 5,
 36 |                 normfreq: 0.2,
 37 |                 bufferSize: 2048,
 38 |                 bypass: true
 39 |             });
 40 |             expect(bitcrusher.bits).toEqual(5);
 41 |             expect(bitcrusher.normfreq).toBeCloseTo(0.2, 1);
 42 |             expect(bitcrusher.bufferSize).toEqual(2048);
 43 |             expect(bitcrusher.bypass).toBeTruthy();
 44 |         });
 45 | 
 46 |         it("will be activated", function() {
 47 |             bitcrusher.activateCallback = jasmine.createSpy("activate_bitchrusher");
 48 |             bitcrusher.bypass = true;
 49 |             bitcrusher.bypass = false;
 50 |             expect(bitcrusher.activateCallback).toHaveBeenCalled();
 51 |         });
 52 | 
 53 |     });
 54 | 
 55 |     describe("a Cabinet node", function() {
 56 |         var cabinet;
 57 | 
 58 |         beforeEach(function() {
 59 |             cabinet = new tuna.Cabinet();
 60 |         });
 61 | 
 62 |         it("will will have default values set", function() {
 63 |             expect(cabinet.makeupGain.value).toEqual(1);
 64 |             expect(cabinet.bypass).toBeFalsy();
 65 |         });
 66 | 
 67 |         it("will have passed values set", function() {
 68 |             cabinet = new tuna.Cabinet({
 69 |                 makeupGain: 5.2,
 70 |                 bypass: true
 71 |             });
 72 |             expect(cabinet.makeupGain.value).toBeCloseTo(5.2, 1);
 73 |             expect(cabinet.bypass).toBeTruthy();
 74 |         });
 75 | 
 76 |         it("will be activated", function() {
 77 |             cabinet.activateCallback = jasmine.createSpy("activate_cabinet");
 78 |             cabinet.bypass = true;
 79 |             cabinet.bypass = false;
 80 |             expect(cabinet.activateCallback).toHaveBeenCalled();
 81 |         });
 82 | 
 83 |     });
 84 | 
 85 |     describe("a Chorus node", function() {
 86 |         var chorus;
 87 | 
 88 |         beforeEach(function() {
 89 |             chorus = new tuna.Chorus();
 90 |         });
 91 | 
 92 |         it("will have default values set", function() {
 93 |             expect(chorus.rate).toBeCloseTo(1.5, 1);
 94 |             expect(chorus.feedback).toBeCloseTo(0.4, 1);
 95 |             expect(chorus.delay).toBeCloseTo(0.0002 * (Math.pow(10, 0.0045) * 2), 5);
 96 |             expect(chorus.depth).toBeCloseTo(0.7, 1);
 97 |             expect(chorus.bypass).toBeFalsy();
 98 |         });
 99 | 
100 |         it("will have passed values set", function() {
101 |             chorus = new tuna.Chorus({
102 |                 rate: 1.0,
103 |                 feedback: 0.2,
104 |                 delay: 0.6,
105 |                 depth: 0.5,
106 |                 bypass: true
107 |             });
108 |             expect(chorus.rate).toBeCloseTo(1.0, 1);
109 |             expect(chorus.feedback).toBeCloseTo(0.2, 1);
110 |             expect(chorus.delay).toBeCloseTo(0.0002 * (Math.pow(10, 0.6) * 2), 5);
111 |             expect(chorus.depth).toBeCloseTo(0.5, 1);
112 |             expect(chorus.bypass).toBeTruthy();
113 |         });
114 | 
115 |         it("will be activated", function() {
116 |             chorus.activateCallback = jasmine.createSpy("activate_chorus");
117 |             chorus.bypass = true;
118 |             chorus.bypass = false;
119 |             expect(chorus.activateCallback).toHaveBeenCalled();
120 |         });
121 | 
122 |     });
123 | 
124 |     describe("a Compressor node", function() {
125 |         var compressor;
126 | 
127 |         beforeEach(function() {
128 |             compressor = new tuna.Compressor();
129 |         });
130 | 
131 |         it("will have default values set", function() {
132 |             expect(compressor.threshold.value).toEqual(-20);
133 |             expect(compressor.release.value).toEqual(250 / 1000);
134 |             expect(compressor.makeupGain.value).toBeCloseTo(1.12, 2);
135 |             expect(compressor.attack.value).toBeCloseTo(1 / 1000, 2);
136 |             expect(compressor.ratio.value).toEqual(4);
137 |             expect(compressor.knee.value).toEqual(5);
138 |             expect(compressor.automakeup).toBeFalsy();
139 |             expect(compressor.bypass).toBeFalsy();
140 |         });
141 | 
142 |         it("will have passed values set", function() {
143 |             compressor = new tuna.Compressor({
144 |                 threshold: -35,
145 |                 release: 200,
146 |                 makeupGain: 2.5,
147 |                 attack: 2,
148 |                 ratio: 3,
149 |                 knee: 4,
150 |                 bypass: true,
151 |             })
152 |             expect(compressor.threshold.value).toEqual(-35);
153 |             expect(compressor.release.value).toBeCloseTo(200 / 1000, 3);
154 |             expect(compressor.makeupGain.value).toBeCloseTo(1.33, 2);
155 |             expect(compressor.attack.value).toBeCloseTo(2 / 1000, 3);
156 |             expect(compressor.ratio.value).toEqual(3);
157 |             expect(compressor.knee.value).toEqual(4);
158 |             expect(compressor.bypass).toBeTruthy();
159 | 
160 |             // automakeup makes threshold, ratio and knee all change makeupGain,
161 |             // hence testing it down here
162 |             compressor = new tuna.Compressor({
163 |                 automakeup: true,
164 |             });
165 |             expect(compressor.automakeup).toBeTruthy();
166 |         });
167 | 
168 |         it("will be activated", function() {
169 |             compressor.activateCallback = jasmine.createSpy("activate_compressor");
170 |             compressor.bypass = true;
171 |             compressor.bypass = false;
172 |             expect(compressor.activateCallback).toHaveBeenCalled();
173 |         });
174 | 
175 |     });
176 | 
177 |     describe("a Delay node", function() {
178 |         var delay;
179 | 
180 |         beforeEach(function() {
181 |             delay = new tuna.Delay();
182 |         });
183 | 
184 |         it("will have default values set", function() {
185 |             expect(delay.cutoff.value).toBeCloseTo(20000, 1);
186 |             expect(delay.delayTime.value).toBeCloseTo(0.1, 1);
187 |             expect(delay.feedback.value).toBeCloseTo(0.45, 2);
188 |             expect(delay.wetLevel.value).toBeCloseTo(0.5, 1);
189 |             expect(delay.dryLevel.value).toBeCloseTo(1, 1);
190 |             expect(delay.bypass).toBeFalsy();
191 |         });
192 | 
193 |         it("will have passed values set", function() {
194 |             delay = new tuna.Delay({
195 |                 feedback: 0.95,
196 |                 delayTime: 500,
197 |                 wetLevel: 0.256,
198 |                 dryLevel: 0.6,
199 |                 cutoff: 2000,
200 |                 bypass: true
201 |             });
202 |             expect(delay.cutoff.value).toBeCloseTo(2000, 1);
203 |             expect(delay.delayTime.value).toBeCloseTo(0.5, 1);
204 |             expect(delay.feedback.value).toBeCloseTo(0.95, 2);
205 |             expect(delay.wetLevel.value).toBeCloseTo(0.256, 3);
206 |             expect(delay.dryLevel.value).toBeCloseTo(0.6, 1);
207 |             expect(delay.bypass).toBeTruthy();
208 |         });
209 | 
210 |         it("will be activated", function() {
211 |             delay.activateCallback = jasmine.createSpy("activate_delay");
212 |             delay.bypass = true;
213 |             delay.bypass = false;
214 |             expect(delay.activateCallback).toHaveBeenCalled();
215 |         });
216 | 
217 |     });
218 | 
219 |     describe("a Convolver node", function() {
220 |         var convolver;
221 | 
222 |         beforeEach(function() {
223 |             convolver = new tuna.Convolver();
224 |         });
225 | 
226 |         it("will will have default values set", function() {
227 |             expect(convolver.highCut.value).toEqual(22050);
228 |             expect(convolver.lowCut.value).toEqual(20);
229 |             expect(convolver.wetLevel.value).toEqual(1);
230 |             expect(convolver.dryLevel.value).toEqual(1);
231 |             expect(convolver.level.value).toEqual(1);
232 |             expect(convolver.bypass).toBeFalsy();
233 |         });
234 | 
235 |         it("will have passed values set", function() {
236 |             convolver = new tuna.Convolver({
237 |                 highCut: 2001,                         //20 to 22050
238 |                 lowCut: 421,                             //20 to 22050
239 |                 dryLevel: 0.4,                            //0 to 1+
240 |                 wetLevel: 0.5,                            //0 to 1+
241 |                 level: 0.8,                               //0 to 1+, adjusts total output of both wet and dry
242 |                 bypass: true
243 |             });
244 |             expect(convolver.highCut.value).toEqual(2001);
245 |             expect(convolver.lowCut.value).toEqual(421);
246 |             expect(convolver.wetLevel.value).toBeCloseTo(0.5, 1);
247 |             expect(convolver.dryLevel.value).toBeCloseTo(0.4, 1);
248 |             expect(convolver.level.value).toBeCloseTo(0.8, 1);
249 |             expect(convolver.bypass).toBeTruthy();
250 |         });
251 | 
252 |         it("will be activated", function() {
253 |             convolver.activateCallback = jasmine.createSpy("activate_convolver");
254 |             convolver.bypass = true;
255 |             convolver.bypass = false;
256 |             expect(convolver.activateCallback).toHaveBeenCalled();
257 |         });
258 | 
259 |     });
260 | 
261 |     describe("a EnvelopeFollower node", function() {
262 |         var envelope;
263 | 
264 |         beforeEach(function() {
265 |             envelope = new tuna.EnvelopeFollower();
266 |         });
267 | 
268 |         it("will have default values set", function() {
269 |             expect(envelope.attackTime).toEqual(0.003);
270 |             expect(envelope.releaseTime).toEqual(0.5);
271 |             expect(envelope.bypass).toBeFalsy();
272 |         });
273 | 
274 |         it("will have passed values set", function() {
275 |             envelope = new tuna.EnvelopeFollower({
276 |                 attackTime: 0.008,
277 |                 releaseTime: 0.4,
278 |                 bypass: true
279 |             });
280 |             expect(envelope.attackTime).toEqual(0.008);
281 |             expect(envelope.releaseTime).toEqual(0.4);
282 |             expect(envelope.bypass).toBeTruthy();
283 |         });
284 | 
285 |         it("will be activated", function() {
286 |             envelope.activateCallback = jasmine.createSpy();
287 |             envelope.bypass = true;
288 |             envelope.bypass = false;
289 |             expect(envelope.activateCallback).toHaveBeenCalled();
290 |         });
291 | 
292 |     });
293 | 
294 |     describe("a Filter node", function() {
295 |         var filter;
296 | 
297 |         beforeEach(function() {
298 |             filter = new tuna.Filter();
299 |         });
300 | 
301 |         it("will have default values set", function() {
302 |             expect(filter.frequency.value).toEqual(800);
303 |             expect(filter.Q.value).toEqual(1);
304 |             expect(filter.gain.value).toEqual(0);
305 |             expect(filter.filterType).toEqual("lowpass");
306 |             expect(filter.bypass).toBeFalsy();
307 |         });
308 | 
309 |         it("will have passed values set", function() {
310 |             filter = new tuna.Filter({
311 |                 frequency: 400,
312 |                 resonance: 2,
313 |                 gain: 2,
314 |                 filterType: "highpass",
315 |                 bypass: true
316 |             });
317 |             expect(filter.frequency.value).toEqual(400);
318 |             expect(filter.Q.value).toEqual(2);
319 |             expect(filter.gain.value).toEqual(2);
320 |             expect(filter.filterType).toEqual("highpass");
321 |             expect(filter.bypass).toBeTruthy();
322 |         });
323 | 
324 |         it("will be activated", function() {
325 |             filter.activateCallback = jasmine.createSpy();
326 |             filter.bypass = true;
327 |             filter.bypass = false;
328 |             expect(filter.activateCallback).toHaveBeenCalled();
329 |         });
330 | 
331 |     });
332 | 
333 |     describe("an LFO node", function() {
334 |         var lfo;
335 | 
336 |         beforeEach(function() {
337 |             lfo = new tuna.LFO();
338 |         });
339 | 
340 |         it("will have default values set", function() {
341 |             expect(lfo.frequency).toEqual(1);
342 |             expect(lfo.offset).toEqual(0.85);
343 |             expect(lfo.oscillation).toEqual(0.3);
344 |             expect(lfo.phase).toEqual(0);
345 |             expect(lfo.bypass).toBeFalsy();
346 |         });
347 | 
348 |         it("will have passed values set", function() {
349 |             lfo = new tuna.LFO({
350 |                 frequency: 0.8,
351 |                 offset: 0.6,
352 |                 oscillation: 0.4,
353 |                 phase: 0.5,
354 |                 bypass: true
355 |             });
356 |             expect(lfo.frequency).toEqual(0.8);
357 |             expect(lfo.offset).toEqual(0.6);
358 |             expect(lfo.oscillation).toEqual(0.4);
359 |             expect(lfo.phase).toEqual(0.5);
360 |             expect(lfo.bypass).toBeTruthy();
361 |         });
362 | 
363 |         it("will be activated", function() {
364 |             lfo.activateCallback = jasmine.createSpy();
365 |             lfo.bypass = true;
366 |             lfo.bypass = false;
367 |             expect(lfo.activateCallback).toHaveBeenCalled();
368 |         });
369 | 
370 |     });
371 | 
372 |     describe("a MoogFilter node", function() {
373 |         var filter;
374 | 
375 |         beforeEach(function() {
376 |             filter = new tuna.MoogFilter();
377 |         });
378 | 
379 |         it("will have default values set", function() {
380 |             expect(filter.bufferSize).toEqual(4096);
381 |             expect(filter.processor.cutoff).toEqual(0.065);
382 |             expect(filter.processor.resonance).toEqual(3.5);
383 |             expect(filter.bypass).toBeFalsy();
384 |         });
385 | 
386 |         it("will have passed values set", function() {
387 |             filter = new tuna.MoogFilter({
388 |                 bufferSize: 256,
389 |                 cutoff: 0.110,
390 |                 resonance: 2.5,
391 |                 bypass: true
392 |             });
393 |             expect(filter.bufferSize).toEqual(256);
394 |             expect(filter.processor.cutoff).toEqual(0.110);
395 |             expect(filter.processor.resonance).toEqual(2.5);
396 |             expect(filter.bypass).toBeTruthy();
397 |         });
398 | 
399 |         it("will be activated", function() {
400 |             filter.activateCallback = jasmine.createSpy();
401 |             filter.bypass = true;
402 |             filter.bypass = false;
403 |             expect(filter.activateCallback).toHaveBeenCalled();
404 |         });
405 | 
406 |     });
407 | 
408 |     describe("a Phaser node", function() {
409 |         var phaser;
410 | 
411 |         beforeEach(function() {
412 |             phaser = new tuna.Phaser();
413 |         });
414 | 
415 |         it("will have default values set", function() {
416 |             expect(phaser.rate).toEqual(0.1);
417 |             expect(phaser.depth).toEqual(0.6);
418 |             expect(phaser.feedback).toEqual(0.7);
419 |             expect(phaser.stereoPhase).toEqual(40);
420 |             expect(phaser.baseModulationFrequency).toEqual(700);
421 |             expect(phaser.bypass).toBeFalsy();
422 |         });
423 | 
424 |         it("will have passed values set", function() {
425 |             phaser = new tuna.Phaser({
426 |                 rate: 0.2,
427 |                 depth: 0.8,
428 |                 feedback: 0.5,
429 |                 stereoPhase: 90,
430 |                 baseModulationFrequency: 550,
431 |                 bypass: true
432 |             });
433 |             expect(phaser.rate).toEqual(0.2);
434 |             expect(phaser.depth).toEqual(0.8);
435 |             expect(phaser.feedback).toEqual(0.5);
436 |             expect(phaser.stereoPhase).toEqual(90);
437 |             expect(phaser.baseModulationFrequency).toEqual(550);
438 |             expect(phaser.bypass).toBeTruthy();
439 |         });
440 | 
441 |         it("will be activated", function() {
442 |             phaser.activateCallback = jasmine.createSpy();
443 |             phaser.bypass = true;
444 |             phaser.bypass = false;
445 |             expect(phaser.activateCallback).toHaveBeenCalled();
446 |         });
447 | 
448 |     });
449 | 
450 |     describe("a PingPongDelay node", function() {
451 |         var delay;
452 | 
453 |         beforeEach(function() {
454 |             delay = new tuna.PingPongDelay();
455 |         });
456 | 
457 |         it("will have default values set", function() {
458 |             expect(delay.delayTimeLeft).toEqual(200);
459 |             expect(delay.delayTimeRight).toEqual(400);
460 |             expect(delay.feedbackLevel.gain.value).toBeCloseTo(0.3, 2);
461 |             expect(delay.wet.gain.value).toBeCloseTo(0.5, 2);
462 |             expect(delay.bypass).toBeFalsy();
463 |         });
464 | 
465 |         it("will have passed values set", function() {
466 |             delay = new tuna.PingPongDelay({
467 |                 delayTimeLeft: 210,
468 |                 delayTimeRight: 410,
469 |                 feedback: 0.5,
470 |                 wetLevel: 0.8,
471 |                 bypass: true
472 |             });
473 |             expect(delay.delayTimeLeft).toEqual(210);
474 |             expect(delay.delayTimeRight).toEqual(410);
475 |             expect(delay.feedbackLevel.gain.value).toBeCloseTo(0.5, 2);
476 |             expect(delay.wet.gain.value).toBeCloseTo(0.8, 2);
477 |             expect(delay.bypass).toBeTruthy();
478 |         });
479 | 
480 |         it("will be activated", function() {
481 |             delay.activateCallback = jasmine.createSpy();
482 |             delay.bypass = true;
483 |             delay.bypass = false;
484 |             expect(delay.activateCallback).toHaveBeenCalled();
485 |         });
486 | 
487 |     });
488 | 
489 |     describe("a Tremolo node", function() {
490 |         var tremolo;
491 | 
492 |         beforeEach(function() {
493 |             tremolo = new tuna.Tremolo();
494 |         });
495 | 
496 |         it("will have default values set", function() {
497 |             expect(tremolo.intensity).toEqual(0.3);
498 |             expect(tremolo.stereoPhase).toEqual(0);
499 |             expect(tremolo.rate).toEqual(5);
500 |             expect(tremolo.bypass).toBeFalsy();
501 |         });
502 | 
503 |         it("will have passed values set", function() {
504 |             tremolo = new tuna.Tremolo({
505 |                 intensity: 0.5,
506 |                 stereoPhase: 90,
507 |                 rate: 8,
508 |                 bypass: true
509 |             });
510 |             expect(tremolo.intensity).toEqual(0.5);
511 |             expect(tremolo.stereoPhase).toEqual(90);
512 |             expect(tremolo.rate).toEqual(8);
513 |             expect(tremolo.bypass).toBeTruthy();
514 |         });
515 | 
516 |         it("will be activated", function() {
517 |             tremolo.activateCallback = jasmine.createSpy();
518 |             tremolo.bypass = true;
519 |             tremolo.bypass = false;
520 |             expect(tremolo.activateCallback).toHaveBeenCalled();
521 |         });
522 | 
523 |     });
524 | 
525 |     describe("a WahWah node", function() {
526 |         var wahwah;
527 | 
528 |         beforeEach(function() {
529 |             wahwah = new tuna.WahWah();
530 |         });
531 | 
532 |         it("will have default values set", function() {
533 |             expect(wahwah.automode).toBeTruthy();
534 |             expect(wahwah.baseFrequency).toEqual(500);
535 |             expect(wahwah.excursionOctaves).toEqual(2);
536 |             expect(wahwah.sweep).toBeCloseTo(0.0062, 4);
537 |             expect(wahwah.resonance).toEqual(10);
538 |             expect(wahwah.sensitivity).toBeCloseTo(3.16, 2);
539 |             expect(wahwah.bypass).toBeFalsy();
540 |         });
541 | 
542 |         it("will have passed values set", function() {
543 |             wahwah = new tuna.WahWah({
544 |                 automode: false,
545 |                 baseFrequency: 0.6,
546 |                 excursionOctaves: 3,
547 |                 sweep: 0.3,
548 |                 resonance: 11,
549 |                 sensitivity: 0.6,
550 |                 bypass: true
551 |             });
552 |             expect(wahwah.automode).toBeFalsy();
553 |             expect(wahwah.baseFrequency).toBeCloseTo(792.45, 2);
554 |             expect(wahwah.excursionOctaves).toEqual(3);
555 |             expect(wahwah.sweep).toBeCloseTo(0.0083, 4);
556 |             expect(wahwah.resonance).toEqual(11);
557 |             expect(wahwah.sensitivity).toBeCloseTo(3.98, 2);
558 |             expect(wahwah.bypass).toBeTruthy();
559 |         });
560 | 
561 |         it("will be activated", function() {
562 |             wahwah.activateCallback = jasmine.createSpy();
563 |             wahwah.bypass = true;
564 |             wahwah.bypass = false;
565 |             expect(wahwah.activateCallback).toHaveBeenCalled();
566 |         });
567 |     });
568 | 
569 |     describe("a Gain node", function() {
570 |         var gain;
571 | 
572 |         beforeEach(function() {
573 |             gain = new tuna.Gain();
574 |         });
575 | 
576 |         it("will have default values set", function() {
577 |             expect(gain.gain.value).toEqual(1);
578 |             expect(gain.bypass).toBeFalsy();
579 |         });
580 | 
581 |         it("will have passed values set", function() {
582 |             gain = new tuna.Gain({
583 |                 gain: 3,
584 |                 bypass: true
585 |             });
586 |             expect(gain.gain.value).toEqual(3);
587 |             expect(gain.bypass).toBeTruthy();
588 |         });
589 | 
590 |         it("will be activated", function() {
591 |             gain.activateCallback = jasmine.createSpy();
592 |             gain.bypass = true;
593 |             gain.bypass = false;
594 |             expect(gain.activateCallback).toHaveBeenCalled();
595 |         });
596 |     });
597 | 
598 |     describe("a Panner node", function() {
599 |         var panner;
600 | 
601 |         beforeEach(function() {
602 |             panner = new tuna.Panner();
603 |         });
604 | 
605 |         it("will have default values set", function() {
606 |             expect(panner.pan.value).toEqual(0);
607 |             expect(panner.bypass).toBeFalsy();
608 |         });
609 | 
610 |         it("will have passed values set", function() {
611 |             panner = new tuna.Panner({
612 |                 pan: 0.75,
613 |                 bypass: true
614 |             });
615 |             expect(panner.pan.value).toEqual(0.75);
616 |             expect(panner.bypass).toBeTruthy();
617 |         });
618 | 
619 |         it("will be activated", function() {
620 |             panner.activateCallback = jasmine.createSpy();
621 |             panner.bypass = true;
622 |             panner.bypass = false;
623 |             expect(panner.activateCallback).toHaveBeenCalled();
624 |         });
625 | 
626 |     });
627 | 
628 | });
629 | 
630 | 


--------------------------------------------------------------------------------
/tuna-min.js:
--------------------------------------------------------------------------------
1 | (function(){var userContext,userInstance,pipe=function(param,val){param.value=val},Super=Object.create(null,{activate:{writable:true,value:function(doActivate){if(doActivate){this.input.disconnect();this.input.connect(this.activateNode);if(this.activateCallback){this.activateCallback(doActivate)}}else{this.input.disconnect();this.input.connect(this.output)}}},bypass:{get:function(){return this._bypass},set:function(value){if(this._lastBypassValue===value){return}this._bypass=value;this.activate(!value);this._lastBypassValue=value}},connect:{value:function(target){this.output.connect(target)}},disconnect:{value:function(target){this.output.disconnect(target)}},connectInOrder:{value:function(nodeArray){var i=nodeArray.length-1;while(i--){if(!nodeArray[i].connect){return console.error("AudioNode.connectInOrder: TypeError: Not an AudioNode.",nodeArray[i])}if(nodeArray[i+1].input){nodeArray[i].connect(nodeArray[i+1].input)}else{nodeArray[i].connect(nodeArray[i+1])}}}},getDefaults:{value:function(){var result={};for(var key in this.defaults){result[key]=this.defaults[key].value}return result}},automate:{value:function(property,value,duration,startTime){var start=startTime?~~(startTime/1e3):userContext.currentTime,dur=duration?~~(duration/1e3):0,_is=this.defaults[property],param=this[property],method;if(param){if(_is.automatable){if(!duration){method="setValueAtTime"}else{method="linearRampToValueAtTime";param.cancelScheduledValues(start);param.setValueAtTime(param.value,start)}param[method](value,dur+start)}else{param=value}}else{console.error("Invalid Property for "+this.name)}}}}),FLOAT="float",BOOLEAN="boolean",STRING="string",INT="int";if(typeof module!=="undefined"&&module.exports){module.exports=Tuna}else if(typeof define==="function"){window.define("Tuna",definition)}else{window.Tuna=Tuna}function definition(){return Tuna}function Tuna(context){if(!(this instanceof Tuna)){return new Tuna(context)}var _window=typeof window==="undefined"?{}:window;if(!_window.AudioContext){_window.AudioContext=_window.webkitAudioContext}if(!context){console.log("tuna.js: Missing audio context! Creating a new context for you.");context=_window.AudioContext&&new _window.AudioContext}if(!context){throw new Error("Tuna cannot initialize because this environment does not support web audio.")}connectify(context);userContext=context;userInstance=this}function connectify(context){if(context.__connectified__===true)return;var gain=context.createGain(),proto=Object.getPrototypeOf(Object.getPrototypeOf(gain)),oconnect=proto.connect;proto.connect=shimConnect;context.__connectified__=true;function shimConnect(){var node=arguments[0];arguments[0]=Super.isPrototypeOf?Super.isPrototypeOf(node)?node.input:node:node.input||node;oconnect.apply(this,arguments);return node}}function dbToWAVolume(db){return Math.max(0,Math.round(100*Math.pow(2,db/6))/100)}function fmod(x,y){var tmp,tmp2,p=0,pY=0,l=0,l2=0;tmp=x.toExponential().match(/^.\.?(.*)e(.+)$/);p=parseInt(tmp[2],10)-(tmp[1]+"").length;tmp=y.toExponential().match(/^.\.?(.*)e(.+)$/);pY=parseInt(tmp[2],10)-(tmp[1]+"").length;if(pY>p){p=pY}tmp2=x%y;if(p<-100||p>20){l=Math.round(Math.log(tmp2)/Math.log(10));l2=Math.pow(10,l);return(tmp2/l2).toFixed(l-p)*l2}else{return parseFloat(tmp2.toFixed(-p))}}function sign(x){if(x===0){return 1}else{return Math.abs(x)/x}}function tanh(n){return(Math.exp(n)-Math.exp(-n))/(Math.exp(n)+Math.exp(-n))}function initValue(userVal,defaultVal){return userVal===undefined?defaultVal:userVal}Tuna.prototype.Bitcrusher=function(properties){if(!properties){properties=this.getDefaults()}this.bufferSize=properties.bufferSize||this.defaults.bufferSize.value;this.input=userContext.createGain();this.activateNode=userContext.createGain();this.processor=userContext.createScriptProcessor(this.bufferSize,1,1);this.output=userContext.createGain();this.activateNode.connect(this.processor);this.processor.connect(this.output);var phaser=0,last=0,input,output,step,i,length;this.processor.onaudioprocess=function(e){input=e.inputBuffer.getChannelData(0),output=e.outputBuffer.getChannelData(0),step=Math.pow(1/2,this.bits);length=input.length;for(i=0;i<length;i++){phaser+=this.normfreq;if(phaser>=1){phaser-=1;last=step*Math.floor(input[i]/step+.5)}output[i]=last}};this.bits=properties.bits||this.defaults.bits.value;this.normfreq=initValue(properties.normfreq,this.defaults.normfreq.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Bitcrusher.prototype=Object.create(Super,{name:{value:"Bitcrusher"},defaults:{writable:true,value:{bits:{value:4,min:1,max:16,automatable:false,type:INT},bufferSize:{value:4096,min:256,max:16384,automatable:false,type:INT},bypass:{value:false,automatable:false,type:BOOLEAN},normfreq:{value:.1,min:1e-4,max:1,automatable:false,type:FLOAT}}},bits:{enumerable:true,get:function(){return this.processor.bits},set:function(value){this.processor.bits=value}},normfreq:{enumerable:true,get:function(){return this.processor.normfreq},set:function(value){this.processor.normfreq=value}}});Tuna.prototype.Cabinet=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.convolver=this.newConvolver(properties.impulsePath||"../impulses/impulse_guitar.wav");this.makeupNode=userContext.createGain();this.output=userContext.createGain();this.activateNode.connect(this.convolver.input);this.convolver.output.connect(this.makeupNode);this.makeupNode.connect(this.output);this.makeupNode.gain.value=initValue(properties.makeupGain,this.defaults.makeupGain.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Cabinet.prototype=Object.create(Super,{name:{value:"Cabinet"},defaults:{writable:true,value:{makeupGain:{value:1,min:0,max:20,automatable:true,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},makeupGain:{enumerable:true,get:function(){return this.makeupNode.gain},set:function(value){this.makeupNode.gain.setTargetAtTime(value,userContext.currentTime,.01)}},newConvolver:{value:function(impulsePath){return new userInstance.Convolver({impulse:impulsePath,dryLevel:0,wetLevel:1})}}});Tuna.prototype.Chorus=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.attenuator=this.activateNode=userContext.createGain();this.splitter=userContext.createChannelSplitter(2);this.delayL=userContext.createDelay();this.delayR=userContext.createDelay();this.feedbackGainNodeLR=userContext.createGain();this.feedbackGainNodeRL=userContext.createGain();this.merger=userContext.createChannelMerger(2);this.output=userContext.createGain();this.lfoL=new userInstance.LFO({target:this.delayL.delayTime,callback:pipe});this.lfoR=new userInstance.LFO({target:this.delayR.delayTime,callback:pipe});this.input.connect(this.attenuator);this.attenuator.connect(this.output);this.attenuator.connect(this.splitter);this.splitter.connect(this.delayL,0);this.splitter.connect(this.delayR,1);this.delayL.connect(this.feedbackGainNodeLR);this.delayR.connect(this.feedbackGainNodeRL);this.feedbackGainNodeLR.connect(this.delayR);this.feedbackGainNodeRL.connect(this.delayL);this.delayL.connect(this.merger,0,0);this.delayR.connect(this.merger,0,1);this.merger.connect(this.output);this.feedback=initValue(properties.feedback,this.defaults.feedback.value);this.rate=initValue(properties.rate,this.defaults.rate.value);this.delay=initValue(properties.delay,this.defaults.delay.value);this.depth=initValue(properties.depth,this.defaults.depth.value);this.lfoR.phase=Math.PI/2;this.attenuator.gain.value=.6934;this.lfoL.activate(true);this.lfoR.activate(true);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Chorus.prototype=Object.create(Super,{name:{value:"Chorus"},defaults:{writable:true,value:{feedback:{value:.4,min:0,max:.95,automatable:false,type:FLOAT},delay:{value:.0045,min:0,max:1,automatable:false,type:FLOAT},depth:{value:.7,min:0,max:1,automatable:false,type:FLOAT},rate:{value:1.5,min:0,max:8,automatable:false,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},delay:{enumerable:true,get:function(){return this._delay},set:function(value){this._delay=2e-4*(Math.pow(10,value)*2);this.lfoL.offset=this._delay;this.lfoR.offset=this._delay;this._depth=this._depth}},depth:{enumerable:true,get:function(){return this._depth},set:function(value){this._depth=value;this.lfoL.oscillation=this._depth*this._delay;this.lfoR.oscillation=this._depth*this._delay}},feedback:{enumerable:true,get:function(){return this._feedback},set:function(value){this._feedback=value;this.feedbackGainNodeLR.gain.setTargetAtTime(this._feedback,userContext.currentTime,.01);this.feedbackGainNodeRL.gain.setTargetAtTime(this._feedback,userContext.currentTime,.01)}},rate:{enumerable:true,get:function(){return this._rate},set:function(value){this._rate=value;this.lfoL.frequency=this._rate;this.lfoR.frequency=this._rate}}});Tuna.prototype.Compressor=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.compNode=this.activateNode=userContext.createDynamicsCompressor();this.makeupNode=userContext.createGain();this.output=userContext.createGain();this.compNode.connect(this.makeupNode);this.makeupNode.connect(this.output);this.automakeup=initValue(properties.automakeup,this.defaults.automakeup.value);if(this.automakeup){this.makeupNode.gain.value=dbToWAVolume(this.computeMakeup())}else{this.makeupNode.gain.value=dbToWAVolume(initValue(properties.makeupGain,this.defaults.makeupGain.value))}this.threshold=initValue(properties.threshold,this.defaults.threshold.value);this.release=initValue(properties.release,this.defaults.release.value);this.attack=initValue(properties.attack,this.defaults.attack.value);this.ratio=properties.ratio||this.defaults.ratio.value;this.knee=initValue(properties.knee,this.defaults.knee.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Compressor.prototype=Object.create(Super,{name:{value:"Compressor"},defaults:{writable:true,value:{threshold:{value:-20,min:-60,max:0,automatable:true,type:FLOAT},release:{value:250,min:10,max:2e3,automatable:true,type:FLOAT},makeupGain:{value:1,min:1,max:100,automatable:true,type:FLOAT},attack:{value:1,min:0,max:1e3,automatable:true,type:FLOAT},ratio:{value:4,min:1,max:50,automatable:true,type:FLOAT},knee:{value:5,min:0,max:40,automatable:true,type:FLOAT},automakeup:{value:false,automatable:false,type:BOOLEAN},bypass:{value:false,automatable:false,type:BOOLEAN}}},computeMakeup:{value:function(){var magicCoefficient=4,c=this.compNode;return-(c.threshold.value-c.threshold.value/c.ratio.value)/magicCoefficient}},automakeup:{enumerable:true,get:function(){return this._automakeup},set:function(value){this._automakeup=value;if(this._automakeup)this.makeupGain=this.computeMakeup()}},threshold:{enumerable:true,get:function(){return this.compNode.threshold},set:function(value){this.compNode.threshold.value=value;if(this._automakeup)this.makeupGain=this.computeMakeup()}},ratio:{enumerable:true,get:function(){return this.compNode.ratio},set:function(value){this.compNode.ratio.value=value;if(this._automakeup)this.makeupGain=this.computeMakeup()}},knee:{enumerable:true,get:function(){return this.compNode.knee},set:function(value){this.compNode.knee.value=value;if(this._automakeup)this.makeupGain=this.computeMakeup()}},attack:{enumerable:true,get:function(){return this.compNode.attack},set:function(value){this.compNode.attack.value=value/1e3}},release:{enumerable:true,get:function(){return this.compNode.release},set:function(value){this.compNode.release.value=value/1e3}},makeupGain:{enumerable:true,get:function(){return this.makeupNode.gain},set:function(value){this.makeupNode.gain.setTargetAtTime(dbToWAVolume(value),userContext.currentTime,.01)}}});Tuna.prototype.Convolver=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.convolver=userContext.createConvolver();this.dry=userContext.createGain();this.filterLow=userContext.createBiquadFilter();this.filterHigh=userContext.createBiquadFilter();this.wet=userContext.createGain();this.output=userContext.createGain();this.activateNode.connect(this.filterLow);this.activateNode.connect(this.dry);this.filterLow.connect(this.filterHigh);this.filterHigh.connect(this.convolver);this.convolver.connect(this.wet);this.wet.connect(this.output);this.dry.connect(this.output);this.dry.gain.value=initValue(properties.dryLevel,this.defaults.dryLevel.value);this.wet.gain.value=initValue(properties.wetLevel,this.defaults.wetLevel.value);this.filterHigh.frequency.value=properties.highCut||this.defaults.highCut.value;this.filterLow.frequency.value=properties.lowCut||this.defaults.lowCut.value;this.output.gain.value=initValue(properties.level,this.defaults.level.value);this.filterHigh.type="lowpass";this.filterLow.type="highpass";this.buffer=properties.impulse||"../impulses/ir_rev_short.wav";this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Convolver.prototype=Object.create(Super,{name:{value:"Convolver"},defaults:{writable:true,value:{highCut:{value:22050,min:20,max:22050,automatable:true,type:FLOAT},lowCut:{value:20,min:20,max:22050,automatable:true,type:FLOAT},dryLevel:{value:1,min:0,max:1,automatable:true,type:FLOAT},wetLevel:{value:1,min:0,max:1,automatable:true,type:FLOAT},level:{value:1,min:0,max:1,automatable:true,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},lowCut:{get:function(){return this.filterLow.frequency},set:function(value){this.filterLow.frequency.setTargetAtTime(value,userContext.currentTime,.01)}},highCut:{get:function(){return this.filterHigh.frequency},set:function(value){this.filterHigh.frequency.setTargetAtTime(value,userContext.currentTime,.01)}},level:{get:function(){return this.output.gain},set:function(value){this.output.gain.setTargetAtTime(value,userContext.currentTime,.01)}},dryLevel:{get:function(){return this.dry.gain},set:function(value){this.dry.gain.setTargetAtTime(value,userContext.currentTime,.01)}},wetLevel:{get:function(){return this.wet.gain},set:function(value){this.wet.gain.setTargetAtTime(value,userContext.currentTime,.01)}},buffer:{enumerable:false,get:function(){return this.convolver.buffer},set:function(impulse){var convolver=this.convolver,xhr=new XMLHttpRequest;if(!impulse){console.log("Tuna.Convolver.setBuffer: Missing impulse path!");return}xhr.open("GET",impulse,true);xhr.responseType="arraybuffer";xhr.onreadystatechange=function(){if(xhr.readyState===4){if(xhr.status<300&&xhr.status>199||xhr.status===302){userContext.decodeAudioData(xhr.response,function(buffer){convolver.buffer=buffer},function(e){if(e)console.log("Tuna.Convolver.setBuffer: Error decoding data"+e)})}}};xhr.send(null)}}});Tuna.prototype.Delay=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.dry=userContext.createGain();this.wet=userContext.createGain();this.filter=userContext.createBiquadFilter();this.delay=userContext.createDelay(10);this.feedbackNode=userContext.createGain();this.output=userContext.createGain();this.activateNode.connect(this.delay);this.activateNode.connect(this.dry);this.delay.connect(this.filter);this.filter.connect(this.feedbackNode);this.feedbackNode.connect(this.delay);this.feedbackNode.connect(this.wet);this.wet.connect(this.output);this.dry.connect(this.output);this.delayTime=properties.delayTime||this.defaults.delayTime.value;this.feedbackNode.gain.value=initValue(properties.feedback,this.defaults.feedback.value);this.wet.gain.value=initValue(properties.wetLevel,this.defaults.wetLevel.value);this.dry.gain.value=initValue(properties.dryLevel,this.defaults.dryLevel.value);this.filter.frequency.value=properties.cutoff||this.defaults.cutoff.value;this.filter.type="lowpass";this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Delay.prototype=Object.create(Super,{name:{value:"Delay"},defaults:{writable:true,value:{delayTime:{value:100,min:20,max:1e3,automatable:false,type:FLOAT},feedback:{value:.45,min:0,max:.9,automatable:true,type:FLOAT},cutoff:{value:2e4,min:20,max:2e4,automatable:true,type:FLOAT},wetLevel:{value:.5,min:0,max:1,automatable:true,type:FLOAT},dryLevel:{value:1,min:0,max:1,automatable:true,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},delayTime:{enumerable:true,get:function(){return this.delay.delayTime},set:function(value){this.delay.delayTime.value=value/1e3}},wetLevel:{enumerable:true,get:function(){return this.wet.gain},set:function(value){this.wet.gain.setTargetAtTime(value,userContext.currentTime,.01)}},dryLevel:{enumerable:true,get:function(){return this.dry.gain},set:function(value){this.dry.gain.setTargetAtTime(value,userContext.currentTime,.01)}},feedback:{enumerable:true,get:function(){return this.feedbackNode.gain},set:function(value){this.feedbackNode.gain.setTargetAtTime(value,userContext.currentTime,.01)}},cutoff:{enumerable:true,get:function(){return this.filter.frequency},set:function(value){this.filter.frequency.setTargetAtTime(value,userContext.currentTime,.01)}}});Tuna.prototype.Filter=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.filter=userContext.createBiquadFilter();this.output=userContext.createGain();this.activateNode.connect(this.filter);this.filter.connect(this.output);this.filter.frequency.value=properties.frequency||this.defaults.frequency.value;this.Q=properties.resonance||this.defaults.Q.value;this.filterType=initValue(properties.filterType,this.defaults.filterType.value);this.filter.gain.value=initValue(properties.gain,this.defaults.gain.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Filter.prototype=Object.create(Super,{name:{value:"Filter"},defaults:{writable:true,value:{frequency:{value:800,min:20,max:22050,automatable:true,type:FLOAT},Q:{value:1,min:.001,max:100,automatable:true,type:FLOAT},gain:{value:0,min:-40,max:40,automatable:true,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN},filterType:{value:"lowpass",automatable:false,type:STRING}}},filterType:{enumerable:true,get:function(){return this.filter.type},set:function(value){this.filter.type=value}},Q:{enumerable:true,get:function(){return this.filter.Q},set:function(value){this.filter.Q.value=value}},gain:{enumerable:true,get:function(){return this.filter.gain},set:function(value){this.filter.gain.setTargetAtTime(value,userContext.currentTime,.01)}},frequency:{enumerable:true,get:function(){return this.filter.frequency},set:function(value){this.filter.frequency.setTargetAtTime(value,userContext.currentTime,.01)}}});Tuna.prototype.Gain=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.gainNode=userContext.createGain();this.output=userContext.createGain();this.activateNode.connect(this.gainNode);this.gainNode.connect(this.output);this.gainNode.gain.value=initValue(properties.gain,this.defaults.gain.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Gain.prototype=Object.create(Super,{name:{value:"Gain"},defaults:{writable:true,value:{bypass:{value:false,automatable:false,type:BOOLEAN},gain:{value:1,automatable:true,type:FLOAT}}},gain:{enumerable:true,get:function(){return this.gainNode.gain},set:function(value){this.gainNode.gain.setTargetAtTime(value,userContext.currentTime,.01)}}});Tuna.prototype.MoogFilter=function(properties){if(!properties){properties=this.getDefaults()}this.bufferSize=properties.bufferSize||this.defaults.bufferSize.value;this.input=userContext.createGain();this.activateNode=userContext.createGain();this.processor=userContext.createScriptProcessor(this.bufferSize,1,1);this.output=userContext.createGain();this.activateNode.connect(this.processor);this.processor.connect(this.output);var in1,in2,in3,in4,out1,out2,out3,out4;in1=in2=in3=in4=out1=out2=out3=out4=0;var input,output,f,fb,i,length,inputFactor;this.processor.onaudioprocess=function(e){input=e.inputBuffer.getChannelData(0);output=e.outputBuffer.getChannelData(0);f=this.cutoff*1.16;inputFactor=.35013*(f*f)*(f*f);fb=this.resonance*(1-.15*f*f);length=input.length;for(i=0;i<length;i++){input[i]-=out4*fb;input[i]*=inputFactor;out1=input[i]+.3*in1+(1-f)*out1;in1=input[i];out2=out1+.3*in2+(1-f)*out2;in2=out1;out3=out2+.3*in3+(1-f)*out3;in3=out2;out4=out3+.3*in4+(1-f)*out4;in4=out3;output[i]=out4}};this.cutoff=initValue(properties.cutoff,this.defaults.cutoff.value);this.resonance=initValue(properties.resonance,this.defaults.resonance.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.MoogFilter.prototype=Object.create(Super,{name:{value:"MoogFilter"},defaults:{writable:true,value:{bufferSize:{value:4096,min:256,max:16384,automatable:false,type:INT},bypass:{value:false,automatable:false,type:BOOLEAN},cutoff:{value:.065,min:1e-4,max:1,automatable:false,type:FLOAT},resonance:{value:3.5,min:0,max:4,automatable:false,type:FLOAT}}},cutoff:{enumerable:true,get:function(){return this.processor.cutoff},set:function(value){this.processor.cutoff=value}},resonance:{enumerable:true,get:function(){return this.processor.resonance},set:function(value){this.processor.resonance=value}}});Tuna.prototype.Overdrive=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.inputDrive=userContext.createGain();this.waveshaper=userContext.createWaveShaper();this.outputDrive=userContext.createGain();this.output=userContext.createGain();this.activateNode.connect(this.inputDrive);this.inputDrive.connect(this.waveshaper);this.waveshaper.connect(this.outputDrive);this.outputDrive.connect(this.output);this.ws_table=new Float32Array(this.k_nSamples);this.drive=initValue(properties.drive,this.defaults.drive.value);this.outputGain=initValue(properties.outputGain,this.defaults.outputGain.value);this.curveAmount=initValue(properties.curveAmount,this.defaults.curveAmount.value);this.algorithmIndex=initValue(properties.algorithmIndex,this.defaults.algorithmIndex.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Overdrive.prototype=Object.create(Super,{name:{value:"Overdrive"},defaults:{writable:true,value:{drive:{value:.197,min:0,max:1,automatable:true,type:FLOAT,scaled:true},outputGain:{value:-9.154,min:-46,max:0,automatable:true,type:FLOAT,scaled:true},curveAmount:{value:.979,min:0,max:1,automatable:false,type:FLOAT},algorithmIndex:{value:0,min:0,max:5,automatable:false,type:INT},bypass:{value:false,automatable:false,type:BOOLEAN}}},k_nSamples:{value:8192},drive:{get:function(){return this.inputDrive.gain},set:function(value){this.inputDrive.gain.value=value}},curveAmount:{get:function(){return this._curveAmount},set:function(value){this._curveAmount=value;if(this._algorithmIndex===undefined){this._algorithmIndex=0}this.waveshaperAlgorithms[this._algorithmIndex](this._curveAmount,this.k_nSamples,this.ws_table);this.waveshaper.curve=this.ws_table}},outputGain:{get:function(){return this.outputDrive.gain},set:function(value){this._outputGain=dbToWAVolume(value);this.outputDrive.gain.setValueAtTime(this._outputGain,userContext.currentTime,.01)}},algorithmIndex:{get:function(){return this._algorithmIndex},set:function(value){this._algorithmIndex=value;this.curveAmount=this._curveAmount}},waveshaperAlgorithms:{value:[function(amount,n_samples,ws_table){amount=Math.min(amount,.9999);var k=2*amount/(1-amount),i,x;for(i=0;i<n_samples;i++){x=i*2/n_samples-1;ws_table[i]=(1+k)*x/(1+k*Math.abs(x))}},function(amount,n_samples,ws_table){var i,x,y;for(i=0;i<n_samples;i++){x=i*2/n_samples-1;y=(.5*Math.pow(x+1.4,2)-1)*(y>=0?5.8:1.2);ws_table[i]=tanh(y)}},function(amount,n_samples,ws_table){var i,x,y,a=1-amount;for(i=0;i<n_samples;i++){x=i*2/n_samples-1;y=x<0?-Math.pow(Math.abs(x),a+.04):Math.pow(x,a);ws_table[i]=tanh(y*2)}},function(amount,n_samples,ws_table){var i,x,y,abx,a=1-amount>.99?.99:1-amount;for(i=0;i<n_samples;i++){x=i*2/n_samples-1;abx=Math.abs(x);if(abx<a){y=abx}else if(abx>a){y=a+(abx-a)/(1+Math.pow((abx-a)/(1-a),2))}else if(abx>1){y=abx}ws_table[i]=sign(x)*y*(1/((a+1)/2))}},function(amount,n_samples,ws_table){var i,x;for(i=0;i<n_samples;i++){x=i*2/n_samples-1;if(x<-.08905){ws_table[i]=-3/4*(1-Math.pow(1-(Math.abs(x)-.032857),12)+1/3*(Math.abs(x)-.032847))+.01}else if(x>=-.08905&&x<.320018){ws_table[i]=-6.153*(x*x)+3.9375*x}else{ws_table[i]=.630035}}},function(amount,n_samples,ws_table){var a=2+Math.round(amount*14),bits=Math.round(Math.pow(2,a-1)),i,x;for(i=0;i<n_samples;i++){x=i*2/n_samples-1;ws_table[i]=Math.round(x*bits)/bits}}]}});Tuna.prototype.Panner=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.panner=userContext.createStereoPanner();this.output=userContext.createGain();this.activateNode.connect(this.panner);this.panner.connect(this.output);this.pan=initValue(properties.pan,this.defaults.pan.value);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Panner.prototype=Object.create(Super,{name:{value:"Panner"},defaults:{writable:true,value:{bypass:{value:false,automatable:false,type:BOOLEAN},pan:{value:0,min:-1,max:1,automatable:true,type:FLOAT}}},pan:{enumerable:true,get:function(){return this.panner.pan},set:function(value){this.panner.pan.value=value}}});Tuna.prototype.Phaser=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.splitter=this.activateNode=userContext.createChannelSplitter(2);this.filtersL=[];this.filtersR=[];this.feedbackGainNodeL=userContext.createGain();this.feedbackGainNodeR=userContext.createGain();this.merger=userContext.createChannelMerger(2);this.filteredSignal=userContext.createGain();this.output=userContext.createGain();this.lfoL=new userInstance.LFO({target:this.filtersL,callback:this.callback});this.lfoR=new userInstance.LFO({target:this.filtersR,callback:this.callback});var i=this.stage;while(i--){this.filtersL[i]=userContext.createBiquadFilter();this.filtersR[i]=userContext.createBiquadFilter();this.filtersL[i].type="allpass";this.filtersR[i].type="allpass"}this.input.connect(this.splitter);this.input.connect(this.output);this.splitter.connect(this.filtersL[0],0,0);this.splitter.connect(this.filtersR[0],1,0);this.connectInOrder(this.filtersL);this.connectInOrder(this.filtersR);this.filtersL[this.stage-1].connect(this.feedbackGainNodeL);this.filtersL[this.stage-1].connect(this.merger,0,0);this.filtersR[this.stage-1].connect(this.feedbackGainNodeR);this.filtersR[this.stage-1].connect(this.merger,0,1);this.feedbackGainNodeL.connect(this.filtersL[0]);this.feedbackGainNodeR.connect(this.filtersR[0]);this.merger.connect(this.output);this.rate=initValue(properties.rate,this.defaults.rate.value);this.baseModulationFrequency=properties.baseModulationFrequency||this.defaults.baseModulationFrequency.value;this.depth=initValue(properties.depth,this.defaults.depth.value);this.feedback=initValue(properties.feedback,this.defaults.feedback.value);this.stereoPhase=initValue(properties.stereoPhase,this.defaults.stereoPhase.value);this.lfoL.activate(true);this.lfoR.activate(true);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Phaser.prototype=Object.create(Super,{name:{value:"Phaser"},stage:{value:4},defaults:{writable:true,value:{rate:{value:.1,min:0,max:8,automatable:false,type:FLOAT},depth:{value:.6,min:0,max:1,automatable:false,type:FLOAT},feedback:{value:.7,min:0,max:1,automatable:false,type:FLOAT},stereoPhase:{value:40,min:0,max:180,automatable:false,type:FLOAT},baseModulationFrequency:{value:700,min:500,max:1500,automatable:false,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},callback:{value:function(filters,value){for(var stage=0;stage<4;stage++){filters[stage].frequency.value=value}}},depth:{get:function(){return this._depth},set:function(value){this._depth=value;this.lfoL.oscillation=this._baseModulationFrequency*this._depth;this.lfoR.oscillation=this._baseModulationFrequency*this._depth}},rate:{get:function(){return this._rate},set:function(value){this._rate=value;this.lfoL.frequency=this._rate;this.lfoR.frequency=this._rate}},baseModulationFrequency:{enumerable:true,get:function(){return this._baseModulationFrequency},set:function(value){this._baseModulationFrequency=value;this.lfoL.offset=this._baseModulationFrequency;this.lfoR.offset=this._baseModulationFrequency;this.depth=this._depth}},feedback:{get:function(){return this._feedback},set:function(value){this._feedback=value;this.feedbackGainNodeL.gain.setTargetAtTime(this._feedback,userContext.currentTime,.01);this.feedbackGainNodeR.gain.setTargetAtTime(this._feedback,userContext.currentTime,.01)}},stereoPhase:{get:function(){return this._stereoPhase},set:function(value){this._stereoPhase=value;var newPhase=this.lfoL._phase+this._stereoPhase*Math.PI/180;newPhase=fmod(newPhase,2*Math.PI);this.lfoR._phase=newPhase}}});Tuna.prototype.PingPongDelay=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.wet=userContext.createGain();this.stereoToMonoMix=userContext.createGain();this.feedbackLevel=userContext.createGain();this.output=userContext.createGain();this.delayLeft=userContext.createDelay(10);this.delayRight=userContext.createDelay(10);this.activateNode=userContext.createGain();this.splitter=userContext.createChannelSplitter(2);this.merger=userContext.createChannelMerger(2);this.activateNode.connect(this.splitter);this.splitter.connect(this.stereoToMonoMix,0,0);this.splitter.connect(this.stereoToMonoMix,1,0);this.stereoToMonoMix.gain.value=.5;this.stereoToMonoMix.connect(this.wet);this.wet.connect(this.delayLeft);this.feedbackLevel.connect(this.wet);this.delayLeft.connect(this.delayRight);this.delayRight.connect(this.feedbackLevel);this.delayLeft.connect(this.merger,0,0);this.delayRight.connect(this.merger,0,1);this.merger.connect(this.output);this.activateNode.connect(this.output);this.delayTimeLeft=properties.delayTimeLeft!==undefined?properties.delayTimeLeft:this.defaults.delayTimeLeft.value;this.delayTimeRight=properties.delayTimeRight!==undefined?properties.delayTimeRight:this.defaults.delayTimeRight.value;this.feedbackLevel.gain.value=properties.feedback!==undefined?properties.feedback:this.defaults.feedback.value;this.wet.gain.value=properties.wetLevel!==undefined?properties.wetLevel:this.defaults.wetLevel.value;this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.PingPongDelay.prototype=Object.create(Super,{name:{value:"PingPongDelay"},delayTimeLeft:{enumerable:true,get:function(){return this._delayTimeLeft},set:function(value){this._delayTimeLeft=value;this.delayLeft.delayTime.value=value/1e3}},delayTimeRight:{enumerable:true,get:function(){return this._delayTimeRight},set:function(value){this._delayTimeRight=value;this.delayRight.delayTime.value=value/1e3}},wetLevel:{enumerable:true,get:function(){return this.wet.gain},set:function(value){this.wet.gain.setTargetAtTime(value,userContext.currentTime,.01)}},feedback:{enumerable:true,get:function(){return this.feedbackLevel.gain},set:function(value){this.feedbackLevel.gain.setTargetAtTime(value,userContext.currentTime,.01)}},defaults:{writable:true,value:{delayTimeLeft:{value:200,min:1,max:1e4,automatable:false,type:INT},delayTimeRight:{value:400,min:1,max:1e4,automatable:false,type:INT},feedback:{value:.3,min:0,max:1,automatable:true,type:FLOAT},wetLevel:{value:.5,min:0,max:1,automatable:true,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}}});Tuna.prototype.Tremolo=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.splitter=this.activateNode=userContext.createChannelSplitter(2);this.amplitudeL=userContext.createGain();this.amplitudeR=userContext.createGain();this.merger=userContext.createChannelMerger(2);this.output=userContext.createGain();this.lfoL=new userInstance.LFO({target:this.amplitudeL.gain,callback:pipe});this.lfoR=new userInstance.LFO({target:this.amplitudeR.gain,callback:pipe});this.input.connect(this.splitter);this.splitter.connect(this.amplitudeL,0);this.splitter.connect(this.amplitudeR,1);this.amplitudeL.connect(this.merger,0,0);this.amplitudeR.connect(this.merger,0,1);this.merger.connect(this.output);this.rate=properties.rate||this.defaults.rate.value;this.intensity=initValue(properties.intensity,this.defaults.intensity.value);this.stereoPhase=initValue(properties.stereoPhase,this.defaults.stereoPhase.value);this.lfoL.offset=1-this.intensity/2;this.lfoR.offset=1-this.intensity/2;this.lfoL.phase=this.stereoPhase*Math.PI/180;this.lfoL.activate(true);this.lfoR.activate(true);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.Tremolo.prototype=Object.create(Super,{name:{value:"Tremolo"},defaults:{writable:true,value:{intensity:{value:.3,min:0,max:1,automatable:false,type:FLOAT},stereoPhase:{value:0,min:0,max:180,automatable:false,type:FLOAT},rate:{value:5,min:.1,max:11,automatable:false,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},intensity:{enumerable:true,get:function(){return this._intensity},set:function(value){this._intensity=value;this.lfoL.offset=1-this._intensity/2;this.lfoR.offset=1-this._intensity/2;this.lfoL.oscillation=this._intensity;this.lfoR.oscillation=this._intensity}},rate:{enumerable:true,get:function(){return this._rate},set:function(value){this._rate=value;this.lfoL.frequency=this._rate;this.lfoR.frequency=this._rate}},stereoPhase:{enumerable:true,get:function(){return this._stereoPhase},set:function(value){this._stereoPhase=value;var newPhase=this.lfoL._phase+this._stereoPhase*Math.PI/180;newPhase=fmod(newPhase,2*Math.PI);this.lfoR.phase=newPhase}}});Tuna.prototype.WahWah=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.activateNode=userContext.createGain();this.envelopeFollower=new userInstance.EnvelopeFollower({target:this,callback:function(context,value){context.sweep=value}});this.filterBp=userContext.createBiquadFilter();this.filterPeaking=userContext.createBiquadFilter();this.output=userContext.createGain();this.activateNode.connect(this.filterBp);this.filterBp.connect(this.filterPeaking);this.filterPeaking.connect(this.output);this.init();this.automode=initValue(properties.automode,this.defaults.automode.value);this.resonance=properties.resonance||this.defaults.resonance.value;this.sensitivity=initValue(properties.sensitivity,this.defaults.sensitivity.value);this.baseFrequency=initValue(properties.baseFrequency,this.defaults.baseFrequency.value);this.excursionOctaves=properties.excursionOctaves||this.defaults.excursionOctaves.value;this.sweep=initValue(properties.sweep,this.defaults.sweep.value);this.activateNode.gain.value=2;this.envelopeFollower.activate(true);this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.WahWah.prototype=Object.create(Super,{name:{value:"WahWah"},defaults:{writable:true,value:{automode:{value:true,automatable:false,type:BOOLEAN},baseFrequency:{value:.153,min:0,max:1,automatable:false,type:FLOAT},excursionOctaves:{value:3.3,min:1,max:6,automatable:false,type:FLOAT},sweep:{value:.35,min:0,max:1,automatable:false,type:FLOAT},resonance:{value:19,min:1,max:100,automatable:false,type:FLOAT},sensitivity:{value:-.5,min:-1,max:1,automatable:false,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},automode:{get:function(){return this._automode},set:function(value){this._automode=value;if(value){this.activateNode.connect(this.envelopeFollower.input);this.envelopeFollower.activate(true)}else{this.envelopeFollower.activate(false);this.activateNode.disconnect();this.activateNode.connect(this.filterBp)}}},filterFreqTimeout:{writable:true,value:0},setFilterFreq:{value:function(){try{this.filterBp.frequency.value=Math.min(22050,this._baseFrequency+this._excursionFrequency*this._sweep);this.filterPeaking.frequency.value=Math.min(22050,this._baseFrequency+this._excursionFrequency*this._sweep)}catch(e){clearTimeout(this.filterFreqTimeout);this.filterFreqTimeout=setTimeout(function(){this.setFilterFreq()}.bind(this),0)}}},sweep:{enumerable:true,get:function(){return this._sweep},set:function(value){this._sweep=Math.pow(value>1?1:value<0?0:value,this._sensitivity);this.setFilterFreq()}},baseFrequency:{enumerable:true,get:function(){return this._baseFrequency},set:function(value){this._baseFrequency=50*Math.pow(10,value*2);this._excursionFrequency=Math.min(userContext.sampleRate/2,this.baseFrequency*Math.pow(2,this._excursionOctaves));this.setFilterFreq()}},excursionOctaves:{enumerable:true,get:function(){return this._excursionOctaves},set:function(value){this._excursionOctaves=value;this._excursionFrequency=Math.min(userContext.sampleRate/2,this.baseFrequency*Math.pow(2,this._excursionOctaves));this.setFilterFreq()}},sensitivity:{enumerable:true,get:function(){return this._sensitivity},set:function(value){this._sensitivity=Math.pow(10,value)}},resonance:{enumerable:true,get:function(){return this._resonance},set:function(value){this._resonance=value;this.filterPeaking.Q.value=this._resonance}},init:{value:function(){this.output.gain.value=1;this.filterPeaking.type="peaking";this.filterBp.type="bandpass";this.filterPeaking.frequency.value=100;this.filterPeaking.gain.value=20;this.filterPeaking.Q.value=5;this.filterBp.frequency.value=100;this.filterBp.Q.value=1}}});Tuna.prototype.EnvelopeFollower=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.jsNode=this.output=userContext.createScriptProcessor(this.buffersize,1,1);this.input.connect(this.output);this.attackTime=initValue(properties.attackTime,this.defaults.attackTime.value);this.releaseTime=initValue(properties.releaseTime,this.defaults.releaseTime.value);this._envelope=0;this.target=properties.target||{};this.callback=properties.callback||function(){};this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.EnvelopeFollower.prototype=Object.create(Super,{name:{value:"EnvelopeFollower"},defaults:{value:{attackTime:{value:.003,min:0,max:.5,automatable:false,type:FLOAT},releaseTime:{value:.5,min:0,max:.5,automatable:false,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},buffersize:{value:256},envelope:{value:0},sampleRate:{value:44100},attackTime:{enumerable:true,get:function(){return this._attackTime},set:function(value){this._attackTime=value;this._attackC=Math.exp(-1/this._attackTime*this.sampleRate/this.buffersize)}},releaseTime:{enumerable:true,get:function(){return this._releaseTime},set:function(value){this._releaseTime=value;this._releaseC=Math.exp(-1/this._releaseTime*this.sampleRate/this.buffersize)}},callback:{get:function(){return this._callback},set:function(value){if(typeof value==="function"){this._callback=value}else{console.error("tuna.js: "+this.name+": Callback must be a function!")}}},target:{get:function(){return this._target},set:function(value){this._target=value}},activate:{value:function(doActivate){this.activated=doActivate;if(doActivate){this.jsNode.connect(userContext.destination);this.jsNode.onaudioprocess=this.returnCompute(this)}else{this.jsNode.disconnect();this.jsNode.onaudioprocess=null}if(this.activateCallback){this.activateCallback(doActivate)}}},returnCompute:{value:function(instance){return function(event){instance.compute(event)}}},compute:{value:function(event){var count=event.inputBuffer.getChannelData(0).length,channels=event.inputBuffer.numberOfChannels,current,chan,rms,i;chan=rms=i=0;for(chan=0;chan<channels;++chan){for(i=0;i<count;++i){current=event.inputBuffer.getChannelData(chan)[i];rms+=current*current}}rms=Math.sqrt(rms/channels);if(this._envelope<rms){this._envelope*=this._attackC;this._envelope+=(1-this._attackC)*rms}else{this._envelope*=this._releaseC;this._envelope+=(1-this._releaseC)*rms}this._callback(this._target,this._envelope)}}});Tuna.prototype.LFO=function(properties){if(!properties){properties=this.getDefaults()}this.input=userContext.createGain();this.output=userContext.createScriptProcessor(256,1,1);this.activateNode=userContext.destination;this.frequency=initValue(properties.frequency,this.defaults.frequency.value);this.offset=initValue(properties.offset,this.defaults.offset.value);this.oscillation=initValue(properties.oscillation,this.defaults.oscillation.value);this.phase=initValue(properties.phase,this.defaults.phase.value);this.target=properties.target||{};this.output.onaudioprocess=this.callback(properties.callback||function(){});this.bypass=properties.bypass||this.defaults.bypass.value};Tuna.prototype.LFO.prototype=Object.create(Super,{name:{value:"LFO"},bufferSize:{value:256},sampleRate:{value:44100},defaults:{value:{frequency:{value:1,min:0,max:20,automatable:false,type:FLOAT},offset:{value:.85,min:0,max:22049,automatable:false,type:FLOAT},oscillation:{value:.3,min:-22050,max:22050,automatable:false,type:FLOAT},phase:{value:0,min:0,max:2*Math.PI,automatable:false,type:FLOAT},bypass:{value:false,automatable:false,type:BOOLEAN}}},frequency:{get:function(){return this._frequency},set:function(value){this._frequency=value;this._phaseInc=2*Math.PI*this._frequency*this.bufferSize/this.sampleRate}},offset:{get:function(){return this._offset},set:function(value){this._offset=value}},oscillation:{get:function(){return this._oscillation},set:function(value){this._oscillation=value}},phase:{get:function(){return this._phase},set:function(value){this._phase=value}},target:{get:function(){return this._target},set:function(value){this._target=value}},activate:{value:function(doActivate){if(doActivate){this.output.connect(userContext.destination);if(this.activateCallback){this.activateCallback(doActivate)}}else{this.output.disconnect()}}},callback:{value:function(callback){var that=this;return function(){that._phase+=that._phaseInc;if(that._phase>2*Math.PI){that._phase=0}callback(that._target,that._offset+that._oscillation*Math.sin(that._phase))}}}});Tuna.toString=Tuna.prototype.toString=function(){return"Please visit https://github.com/Theodeus/tuna/wiki for instructions on how to use Tuna.js"}})();


--------------------------------------------------------------------------------
/tuna.js:
--------------------------------------------------------------------------------
   1 | /*
   2 |     Copyright (c) 2012 DinahMoe AB & Oskar Eriksson
   3 | 
   4 |     Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
   5 |     files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
   6 |     modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
   7 |     is furnished to do so, subject to the following conditions:
   8 | 
   9 |     The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
  10 | 
  11 |     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  12 |     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  13 |     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  14 |     OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  15 | */
  16 | /*global module*/
  17 | (function() {
  18 | 
  19 |     var userContext,
  20 |         userInstance,
  21 |         pipe = function(param, val) {
  22 |             param.value = val;
  23 |         },
  24 |         Super = Object.create(null, {
  25 |             activate: {
  26 |                 writable: true,
  27 |                 value: function(doActivate) {
  28 |                     if (doActivate) {
  29 |                         this.input.disconnect();
  30 |                         this.input.connect(this.activateNode);
  31 |                         if (this.activateCallback) {
  32 |                             this.activateCallback(doActivate);
  33 |                         }
  34 |                     } else {
  35 |                         this.input.disconnect();
  36 |                         this.input.connect(this.output);
  37 |                     }
  38 |                 }
  39 |             },
  40 |             bypass: {
  41 |                 get: function() {
  42 |                     return this._bypass;
  43 |                 },
  44 |                 set: function(value) {
  45 |                     if (this._lastBypassValue === value) {
  46 |                         return;
  47 |                     }
  48 |                     this._bypass = value;
  49 |                     this.activate(!value);
  50 |                     this._lastBypassValue = value;
  51 |                 }
  52 |             },
  53 |             connect: {
  54 |                 value: function(target) {
  55 |                     this.output.connect(target);
  56 |                 }
  57 |             },
  58 |             disconnect: {
  59 |                 value: function(target) {
  60 |                     this.output.disconnect(target);
  61 |                 }
  62 |             },
  63 |             connectInOrder: {
  64 |                 value: function(nodeArray) {
  65 |                     var i = nodeArray.length - 1;
  66 |                     while (i--) {
  67 |                         if (!nodeArray[i].connect) {
  68 |                             return console.error("AudioNode.connectInOrder: TypeError: Not an AudioNode.", nodeArray[i]);
  69 |                         }
  70 |                         if (nodeArray[i + 1].input) {
  71 |                             nodeArray[i].connect(nodeArray[i + 1].input);
  72 |                         } else {
  73 |                             nodeArray[i].connect(nodeArray[i + 1]);
  74 |                         }
  75 |                     }
  76 |                 }
  77 |             },
  78 |             getDefaults: {
  79 |                 value: function() {
  80 |                     var result = {};
  81 |                     for (var key in this.defaults) {
  82 |                         result[key] = this.defaults[key].value;
  83 |                     }
  84 |                     return result;
  85 |                 }
  86 |             },
  87 |             automate: {
  88 |                 value: function(property, value, duration, startTime) {
  89 |                     var start = startTime ? ~~(startTime / 1000) : userContext.currentTime,
  90 |                         dur = duration ? ~~(duration / 1000) : 0,
  91 |                         _is = this.defaults[property],
  92 |                         param = this[property],
  93 |                         method;
  94 | 
  95 |                     if (param) {
  96 |                         if (_is.automatable) {
  97 |                             if (!duration) {
  98 |                                 method = "setValueAtTime";
  99 |                             } else {
 100 |                                 method = "linearRampToValueAtTime";
 101 |                                 param.cancelScheduledValues(start);
 102 |                                 param.setValueAtTime(param.value, start);
 103 |                             }
 104 |                             param[method](value, dur + start);
 105 |                         } else {
 106 |                             param = value;
 107 |                         }
 108 |                     } else {
 109 |                         console.error("Invalid Property for " + this.name);
 110 |                     }
 111 |                 }
 112 |             }
 113 |         }),
 114 |         FLOAT = "float",
 115 |         BOOLEAN = "boolean",
 116 |         STRING = "string",
 117 |         INT = "int";
 118 | 
 119 |     if (typeof module !== "undefined" && module.exports) {
 120 |         module.exports = Tuna;
 121 |     } else if (typeof define === "function") {
 122 |         window.define("Tuna", definition);
 123 |     } else {
 124 |         window.Tuna = Tuna;
 125 |     }
 126 | 
 127 |     function definition() {
 128 |         return Tuna;
 129 |     }
 130 | 
 131 |     function Tuna(context) {
 132 |         if (!(this instanceof Tuna)) {
 133 |             return new Tuna(context);
 134 |         }
 135 | 
 136 |         var _window = typeof window === "undefined" ? {} : window;
 137 | 
 138 |         if (!_window.AudioContext) {
 139 |             _window.AudioContext = _window.webkitAudioContext;
 140 |         }
 141 |         if (!context) {
 142 |             console.log("tuna.js: Missing audio context! Creating a new context for you.");
 143 |             context = _window.AudioContext && (new _window.AudioContext());
 144 |         }
 145 |         if (!context) {
 146 |             throw new Error("Tuna cannot initialize because this environment does not support web audio.");
 147 |         }
 148 |         connectify(context);
 149 |         userContext = context;
 150 |         userInstance = this;
 151 |     }
 152 | 
 153 |     function connectify(context) {
 154 |         if (context.__connectified__ === true) return;
 155 | 
 156 |         var gain = context.createGain(),
 157 |             proto = Object.getPrototypeOf(Object.getPrototypeOf(gain)),
 158 |             oconnect = proto.connect;
 159 | 
 160 |         proto.connect = shimConnect;
 161 |         context.__connectified__ = true; // Prevent overriding connect more than once
 162 | 
 163 |         function shimConnect() {
 164 |             var node = arguments[0];
 165 |             arguments[0] = Super.isPrototypeOf ? (Super.isPrototypeOf(node) ? node.input : node) : (node.input || node);
 166 |             oconnect.apply(this, arguments);
 167 |             return node;
 168 |         }
 169 |     }
 170 | 
 171 |     function dbToWAVolume(db) {
 172 |         return Math.max(0, Math.round(100 * Math.pow(2, db / 6)) / 100);
 173 |     }
 174 | 
 175 |     function fmod(x, y) {
 176 |         // http://kevin.vanzonneveld.net
 177 |         // *     example 1: fmod(5.7, 1.3);
 178 |         // *     returns 1: 0.5
 179 |         var tmp, tmp2, p = 0,
 180 |             pY = 0,
 181 |             l = 0.0,
 182 |             l2 = 0.0;
 183 | 
 184 |         tmp = x.toExponential().match(/^.\.?(.*)e(.+)$/);
 185 |         p = parseInt(tmp[2], 10) - (tmp[1] + "").length;
 186 |         tmp = y.toExponential().match(/^.\.?(.*)e(.+)$/);
 187 |         pY = parseInt(tmp[2], 10) - (tmp[1] + "").length;
 188 | 
 189 |         if (pY > p) {
 190 |             p = pY;
 191 |         }
 192 | 
 193 |         tmp2 = (x % y);
 194 | 
 195 |         if (p < -100 || p > 20) {
 196 |             // toFixed will give an out of bound error so we fix it like this:
 197 |             l = Math.round(Math.log(tmp2) / Math.log(10));
 198 |             l2 = Math.pow(10, l);
 199 | 
 200 |             return (tmp2 / l2).toFixed(l - p) * l2;
 201 |         } else {
 202 |             return parseFloat(tmp2.toFixed(-p));
 203 |         }
 204 |     }
 205 | 
 206 |     function sign(x) {
 207 |         if (x === 0) {
 208 |             return 1;
 209 |         } else {
 210 |             return Math.abs(x) / x;
 211 |         }
 212 |     }
 213 | 
 214 |     function tanh(n) {
 215 |         return (Math.exp(n) - Math.exp(-n)) / (Math.exp(n) + Math.exp(-n));
 216 |     }
 217 | 
 218 |     function initValue(userVal, defaultVal) {
 219 |         return userVal === undefined ? defaultVal : userVal;
 220 |     }
 221 | 
 222 |     Tuna.prototype.Bitcrusher = function(properties) {
 223 |         if (!properties) {
 224 |             properties = this.getDefaults();
 225 |         }
 226 |         this.bufferSize = properties.bufferSize || this.defaults.bufferSize.value;
 227 | 
 228 |         this.input = userContext.createGain();
 229 |         this.activateNode = userContext.createGain();
 230 |         this.processor = userContext.createScriptProcessor(this.bufferSize, 1, 1);
 231 |         this.output = userContext.createGain();
 232 | 
 233 |         this.activateNode.connect(this.processor);
 234 |         this.processor.connect(this.output);
 235 | 
 236 |         var phaser = 0,
 237 |             last = 0,
 238 |             input, output, step, i, length;
 239 |         this.processor.onaudioprocess = function(e) {
 240 |             input = e.inputBuffer.getChannelData(0),
 241 |             output = e.outputBuffer.getChannelData(0),
 242 |             step = Math.pow(1 / 2, this.bits);
 243 |             length = input.length;
 244 |             for (i = 0; i < length; i++) {
 245 |                 phaser += this.normfreq;
 246 |                 if (phaser >= 1.0) {
 247 |                     phaser -= 1.0;
 248 |                     last = step * Math.floor(input[i] / step + 0.5);
 249 |                 }
 250 |                 output[i] = last;
 251 |             }
 252 |         };
 253 | 
 254 |         this.bits = properties.bits || this.defaults.bits.value;
 255 |         this.normfreq = initValue(properties.normfreq, this.defaults.normfreq.value);
 256 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 257 |     };
 258 |     Tuna.prototype.Bitcrusher.prototype = Object.create(Super, {
 259 |         name: {
 260 |             value: "Bitcrusher"
 261 |         },
 262 |         defaults: {
 263 |             writable: true,
 264 |             value: {
 265 |                 bits: {
 266 |                     value: 4,
 267 |                     min: 1,
 268 |                     max: 16,
 269 |                     automatable: false,
 270 |                     type: INT
 271 |                 },
 272 |                 bufferSize: {
 273 |                     value: 4096,
 274 |                     min: 256,
 275 |                     max: 16384,
 276 |                     automatable: false,
 277 |                     type: INT
 278 |                 },
 279 |                 bypass: {
 280 |                     value: false,
 281 |                     automatable: false,
 282 |                     type: BOOLEAN
 283 |                 },
 284 |                 normfreq: {
 285 |                     value: 0.1,
 286 |                     min: 0.0001,
 287 |                     max: 1.0,
 288 |                     automatable: false,
 289 |                     type: FLOAT
 290 |                 }
 291 |             }
 292 |         },
 293 |         bits: {
 294 |             enumerable: true,
 295 |             get: function() {
 296 |                 return this.processor.bits;
 297 |             },
 298 |             set: function(value) {
 299 |                 this.processor.bits = value;
 300 |             }
 301 |         },
 302 |         normfreq: {
 303 |             enumerable: true,
 304 |             get: function() {
 305 |                 return this.processor.normfreq;
 306 |             },
 307 |             set: function(value) {
 308 |                 this.processor.normfreq = value;
 309 |             }
 310 |         }
 311 |     });
 312 | 
 313 |     Tuna.prototype.Cabinet = function(properties) {
 314 |         if (!properties) {
 315 |             properties = this.getDefaults();
 316 |         }
 317 |         this.input = userContext.createGain();
 318 |         this.activateNode = userContext.createGain();
 319 |         this.convolver = this.newConvolver(properties.impulsePath || "../impulses/impulse_guitar.wav");
 320 |         this.makeupNode = userContext.createGain();
 321 |         this.output = userContext.createGain();
 322 | 
 323 |         this.activateNode.connect(this.convolver.input);
 324 |         this.convolver.output.connect(this.makeupNode);
 325 |         this.makeupNode.connect(this.output);
 326 |         //don't use makeupGain setter at init to avoid smoothing
 327 |         this.makeupNode.gain.value = initValue(properties.makeupGain, this.defaults.makeupGain.value);
 328 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 329 |     };
 330 |     Tuna.prototype.Cabinet.prototype = Object.create(Super, {
 331 |         name: {
 332 |             value: "Cabinet"
 333 |         },
 334 |         defaults: {
 335 |             writable: true,
 336 |             value: {
 337 |                 makeupGain: {
 338 |                     value: 1,
 339 |                     min: 0,
 340 |                     max: 20,
 341 |                     automatable: true,
 342 |                     type: FLOAT
 343 |                 },
 344 |                 bypass: {
 345 |                     value: false,
 346 |                     automatable: false,
 347 |                     type: BOOLEAN
 348 |                 }
 349 |             }
 350 |         },
 351 |         makeupGain: {
 352 |             enumerable: true,
 353 |             get: function() {
 354 |                 return this.makeupNode.gain;
 355 |             },
 356 |             set: function(value) {
 357 |                 this.makeupNode.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 358 |             }
 359 |         },
 360 |         newConvolver: {
 361 |             value: function(impulsePath) {
 362 |                 return new userInstance.Convolver({
 363 |                     impulse: impulsePath,
 364 |                     dryLevel: 0,
 365 |                     wetLevel: 1
 366 |                 });
 367 |             }
 368 |         }
 369 |     });
 370 | 
 371 |     Tuna.prototype.Chorus = function(properties) {
 372 |         if (!properties) {
 373 |             properties = this.getDefaults();
 374 |         }
 375 |         this.input = userContext.createGain();
 376 |         this.attenuator = this.activateNode = userContext.createGain();
 377 |         this.splitter = userContext.createChannelSplitter(2);
 378 |         this.delayL = userContext.createDelay();
 379 |         this.delayR = userContext.createDelay();
 380 |         this.feedbackGainNodeLR = userContext.createGain();
 381 |         this.feedbackGainNodeRL = userContext.createGain();
 382 |         this.merger = userContext.createChannelMerger(2);
 383 |         this.output = userContext.createGain();
 384 | 
 385 |         this.lfoL = new userInstance.LFO({
 386 |             target: this.delayL.delayTime,
 387 |             callback: pipe
 388 |         });
 389 |         this.lfoR = new userInstance.LFO({
 390 |             target: this.delayR.delayTime,
 391 |             callback: pipe
 392 |         });
 393 | 
 394 |         this.input.connect(this.attenuator);
 395 |         this.attenuator.connect(this.output);
 396 |         this.attenuator.connect(this.splitter);
 397 |         this.splitter.connect(this.delayL, 0);
 398 |         this.splitter.connect(this.delayR, 1);
 399 |         this.delayL.connect(this.feedbackGainNodeLR);
 400 |         this.delayR.connect(this.feedbackGainNodeRL);
 401 |         this.feedbackGainNodeLR.connect(this.delayR);
 402 |         this.feedbackGainNodeRL.connect(this.delayL);
 403 |         this.delayL.connect(this.merger, 0, 0);
 404 |         this.delayR.connect(this.merger, 0, 1);
 405 |         this.merger.connect(this.output);
 406 | 
 407 |         this.feedback = initValue(properties.feedback, this.defaults.feedback.value);
 408 |         this.rate = initValue(properties.rate, this.defaults.rate.value);
 409 |         this.delay = initValue(properties.delay, this.defaults.delay.value);
 410 |         this.depth = initValue(properties.depth, this.defaults.depth.value);
 411 |         this.lfoR.phase = Math.PI / 2;
 412 |         this.attenuator.gain.value = 0.6934; // 1 / (10 ^ (((20 * log10(3)) / 3) / 20))
 413 |         this.lfoL.activate(true);
 414 |         this.lfoR.activate(true);
 415 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 416 |     };
 417 |     Tuna.prototype.Chorus.prototype = Object.create(Super, {
 418 |         name: {
 419 |             value: "Chorus"
 420 |         },
 421 |         defaults: {
 422 |             writable: true,
 423 |             value: {
 424 |                 feedback: {
 425 |                     value: 0.4,
 426 |                     min: 0,
 427 |                     max: 0.95,
 428 |                     automatable: false,
 429 |                     type: FLOAT
 430 |                 },
 431 |                 delay: {
 432 |                     value: 0.0045,
 433 |                     min: 0,
 434 |                     max: 1,
 435 |                     automatable: false,
 436 |                     type: FLOAT
 437 |                 },
 438 |                 depth: {
 439 |                     value: 0.7,
 440 |                     min: 0,
 441 |                     max: 1,
 442 |                     automatable: false,
 443 |                     type: FLOAT
 444 |                 },
 445 |                 rate: {
 446 |                     value: 1.5,
 447 |                     min: 0,
 448 |                     max: 8,
 449 |                     automatable: false,
 450 |                     type: FLOAT
 451 |                 },
 452 |                 bypass: {
 453 |                     value: false,
 454 |                     automatable: false,
 455 |                     type: BOOLEAN
 456 |                 }
 457 |             }
 458 |         },
 459 |         delay: {
 460 |             enumerable: true,
 461 |             get: function() {
 462 |                 return this._delay;
 463 |             },
 464 |             set: function(value) {
 465 |                 this._delay = 0.0002 * (Math.pow(10, value) * 2);
 466 |                 this.lfoL.offset = this._delay;
 467 |                 this.lfoR.offset = this._delay;
 468 |                 this._depth = this._depth;
 469 |             }
 470 |         },
 471 |         depth: {
 472 |             enumerable: true,
 473 |             get: function() {
 474 |                 return this._depth;
 475 |             },
 476 |             set: function(value) {
 477 |                 this._depth = value;
 478 |                 this.lfoL.oscillation = this._depth * this._delay;
 479 |                 this.lfoR.oscillation = this._depth * this._delay;
 480 |             }
 481 |         },
 482 |         feedback: {
 483 |             enumerable: true,
 484 |             get: function() {
 485 |                 return this._feedback;
 486 |             },
 487 |             set: function(value) {
 488 |                 this._feedback = value;
 489 |                 this.feedbackGainNodeLR.gain.setTargetAtTime(this._feedback, userContext.currentTime, 0.01);
 490 |                 this.feedbackGainNodeRL.gain.setTargetAtTime(this._feedback, userContext.currentTime, 0.01);
 491 |             }
 492 |         },
 493 |         rate: {
 494 |             enumerable: true,
 495 |             get: function() {
 496 |                 return this._rate;
 497 |             },
 498 |             set: function(value) {
 499 |                 this._rate = value;
 500 |                 this.lfoL.frequency = this._rate;
 501 |                 this.lfoR.frequency = this._rate;
 502 |             }
 503 |         }
 504 |     });
 505 | 
 506 |     Tuna.prototype.Compressor = function(properties) {
 507 |         if (!properties) {
 508 |             properties = this.getDefaults();
 509 |         }
 510 |         this.input = userContext.createGain();
 511 |         this.compNode = this.activateNode = userContext.createDynamicsCompressor();
 512 |         this.makeupNode = userContext.createGain();
 513 |         this.output = userContext.createGain();
 514 | 
 515 |         this.compNode.connect(this.makeupNode);
 516 |         this.makeupNode.connect(this.output);
 517 | 
 518 |         this.automakeup = initValue(properties.automakeup, this.defaults.automakeup.value);
 519 | 
 520 |         //don't use makeupGain setter at initialization to avoid smoothing
 521 |         if (this.automakeup) {
 522 |             this.makeupNode.gain.value = dbToWAVolume(this.computeMakeup());
 523 |         } else {
 524 |             this.makeupNode.gain.value = dbToWAVolume(initValue(properties.makeupGain, this.defaults.makeupGain.value));
 525 |         }
 526 |         this.threshold = initValue(properties.threshold, this.defaults.threshold.value);
 527 |         this.release = initValue(properties.release, this.defaults.release.value);
 528 |         this.attack = initValue(properties.attack, this.defaults.attack.value);
 529 |         this.ratio = properties.ratio || this.defaults.ratio.value;
 530 |         this.knee = initValue(properties.knee, this.defaults.knee.value);
 531 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 532 |     };
 533 |     Tuna.prototype.Compressor.prototype = Object.create(Super, {
 534 |         name: {
 535 |             value: "Compressor"
 536 |         },
 537 |         defaults: {
 538 |             writable: true,
 539 |             value: {
 540 |                 threshold: {
 541 |                     value: -20,
 542 |                     min: -60,
 543 |                     max: 0,
 544 |                     automatable: true,
 545 |                     type: FLOAT
 546 |                 },
 547 |                 release: {
 548 |                     value: 250,
 549 |                     min: 10,
 550 |                     max: 2000,
 551 |                     automatable: true,
 552 |                     type: FLOAT
 553 |                 },
 554 |                 makeupGain: {
 555 |                     value: 1,
 556 |                     min: 1,
 557 |                     max: 100,
 558 |                     automatable: true,
 559 |                     type: FLOAT
 560 |                 },
 561 |                 attack: {
 562 |                     value: 1,
 563 |                     min: 0,
 564 |                     max: 1000,
 565 |                     automatable: true,
 566 |                     type: FLOAT
 567 |                 },
 568 |                 ratio: {
 569 |                     value: 4,
 570 |                     min: 1,
 571 |                     max: 50,
 572 |                     automatable: true,
 573 |                     type: FLOAT
 574 |                 },
 575 |                 knee: {
 576 |                     value: 5,
 577 |                     min: 0,
 578 |                     max: 40,
 579 |                     automatable: true,
 580 |                     type: FLOAT
 581 |                 },
 582 |                 automakeup: {
 583 |                     value: false,
 584 |                     automatable: false,
 585 |                     type: BOOLEAN
 586 |                 },
 587 |                 bypass: {
 588 |                     value: false,
 589 |                     automatable: false,
 590 |                     type: BOOLEAN
 591 |                 }
 592 |             }
 593 |         },
 594 |         computeMakeup: {
 595 |             value: function() {
 596 |                 var magicCoefficient = 4, // raise me if the output is too hot
 597 |                     c = this.compNode;
 598 |                 return -(c.threshold.value - c.threshold.value / c.ratio.value) / magicCoefficient;
 599 |             }
 600 |         },
 601 |         automakeup: {
 602 |             enumerable: true,
 603 |             get: function() {
 604 |                 return this._automakeup;
 605 |             },
 606 |             set: function(value) {
 607 |                 this._automakeup = value;
 608 |                 if (this._automakeup) this.makeupGain = this.computeMakeup();
 609 |             }
 610 |         },
 611 |         threshold: {
 612 |             enumerable: true,
 613 |             get: function() {
 614 |                 return this.compNode.threshold;
 615 |             },
 616 |             set: function(value) {
 617 |                 this.compNode.threshold.value = value;
 618 |                 if (this._automakeup) this.makeupGain = this.computeMakeup();
 619 |             }
 620 |         },
 621 |         ratio: {
 622 |             enumerable: true,
 623 |             get: function() {
 624 |                 return this.compNode.ratio;
 625 |             },
 626 |             set: function(value) {
 627 |                 this.compNode.ratio.value = value;
 628 |                 if (this._automakeup) this.makeupGain = this.computeMakeup();
 629 |             }
 630 |         },
 631 |         knee: {
 632 |             enumerable: true,
 633 |             get: function() {
 634 |                 return this.compNode.knee;
 635 |             },
 636 |             set: function(value) {
 637 |                 this.compNode.knee.value = value;
 638 |                 if (this._automakeup) this.makeupGain = this.computeMakeup();
 639 |             }
 640 |         },
 641 |         attack: {
 642 |             enumerable: true,
 643 |             get: function() {
 644 |                 return this.compNode.attack;
 645 |             },
 646 |             set: function(value) {
 647 |                 this.compNode.attack.value = value / 1000;
 648 |             }
 649 |         },
 650 |         release: {
 651 |             enumerable: true,
 652 |             get: function() {
 653 |                 return this.compNode.release;
 654 |             },
 655 |             set: function(value) {
 656 |                 this.compNode.release.value = value / 1000;
 657 |             }
 658 |         },
 659 |         makeupGain: {
 660 |             enumerable: true,
 661 |             get: function() {
 662 |                 return this.makeupNode.gain;
 663 |             },
 664 |             set: function(value) {
 665 |                 this.makeupNode.gain.setTargetAtTime(dbToWAVolume(value), userContext.currentTime, 0.01);
 666 |             }
 667 |         }
 668 |     });
 669 | 
 670 |     Tuna.prototype.Convolver = function(properties) {
 671 |         if (!properties) {
 672 |             properties = this.getDefaults();
 673 |         }
 674 |         this.input = userContext.createGain();
 675 |         this.activateNode = userContext.createGain();
 676 |         this.convolver = userContext.createConvolver();
 677 |         this.dry = userContext.createGain();
 678 |         this.filterLow = userContext.createBiquadFilter();
 679 |         this.filterHigh = userContext.createBiquadFilter();
 680 |         this.wet = userContext.createGain();
 681 |         this.output = userContext.createGain();
 682 | 
 683 |         this.activateNode.connect(this.filterLow);
 684 |         this.activateNode.connect(this.dry);
 685 |         this.filterLow.connect(this.filterHigh);
 686 |         this.filterHigh.connect(this.convolver);
 687 |         this.convolver.connect(this.wet);
 688 |         this.wet.connect(this.output);
 689 |         this.dry.connect(this.output);
 690 | 
 691 |         //don't use setters at init to avoid smoothing
 692 |         this.dry.gain.value = initValue(properties.dryLevel, this.defaults.dryLevel.value);
 693 |         this.wet.gain.value = initValue(properties.wetLevel, this.defaults.wetLevel.value);
 694 |         this.filterHigh.frequency.value = properties.highCut || this.defaults.highCut.value;
 695 |         this.filterLow.frequency.value = properties.lowCut || this.defaults.lowCut.value;
 696 |         this.output.gain.value = initValue(properties.level, this.defaults.level.value);
 697 |         this.filterHigh.type = "lowpass";
 698 |         this.filterLow.type = "highpass";
 699 |         this.buffer = properties.impulse || "../impulses/ir_rev_short.wav";
 700 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 701 |     };
 702 |     Tuna.prototype.Convolver.prototype = Object.create(Super, {
 703 |         name: {
 704 |             value: "Convolver"
 705 |         },
 706 |         defaults: {
 707 |             writable: true,
 708 |             value: {
 709 |                 highCut: {
 710 |                     value: 22050,
 711 |                     min: 20,
 712 |                     max: 22050,
 713 |                     automatable: true,
 714 |                     type: FLOAT
 715 |                 },
 716 |                 lowCut: {
 717 |                     value: 20,
 718 |                     min: 20,
 719 |                     max: 22050,
 720 |                     automatable: true,
 721 |                     type: FLOAT
 722 |                 },
 723 |                 dryLevel: {
 724 |                     value: 1,
 725 |                     min: 0,
 726 |                     max: 1,
 727 |                     automatable: true,
 728 |                     type: FLOAT
 729 |                 },
 730 |                 wetLevel: {
 731 |                     value: 1,
 732 |                     min: 0,
 733 |                     max: 1,
 734 |                     automatable: true,
 735 |                     type: FLOAT
 736 |                 },
 737 |                 level: {
 738 |                     value: 1,
 739 |                     min: 0,
 740 |                     max: 1,
 741 |                     automatable: true,
 742 |                     type: FLOAT
 743 |                 },
 744 |                 bypass: {
 745 |                     value: false,
 746 |                     automatable: false,
 747 |                     type: BOOLEAN
 748 |                 }
 749 |             }
 750 |         },
 751 |         lowCut: {
 752 |             get: function() {
 753 |                 return this.filterLow.frequency;
 754 |             },
 755 |             set: function(value) {
 756 |                 this.filterLow.frequency.setTargetAtTime(value, userContext.currentTime, 0.01);
 757 |             }
 758 |         },
 759 |         highCut: {
 760 |             get: function() {
 761 |                 return this.filterHigh.frequency;
 762 |             },
 763 |             set: function(value) {
 764 |                 this.filterHigh.frequency.setTargetAtTime(value, userContext.currentTime, 0.01);
 765 |             }
 766 |         },
 767 |         level: {
 768 |             get: function() {
 769 |                 return this.output.gain;
 770 |             },
 771 |             set: function(value) {
 772 |                 this.output.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 773 |             }
 774 |         },
 775 |         dryLevel: {
 776 |             get: function() {
 777 |                 return this.dry.gain;
 778 |             },
 779 |             set: function(value) {
 780 |                 this.dry.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 781 |             }
 782 |         },
 783 |         wetLevel: {
 784 |             get: function() {
 785 |                 return this.wet.gain;
 786 |             },
 787 |             set: function(value) {
 788 |                 this.wet.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 789 |             }
 790 |         },
 791 |         buffer: {
 792 |             enumerable: false,
 793 |             get: function() {
 794 |                 return this.convolver.buffer;
 795 |             },
 796 |             set: function(impulse) {
 797 |                 var convolver = this.convolver,
 798 |                     xhr = new XMLHttpRequest();
 799 |                 if (!impulse) {
 800 |                     console.log("Tuna.Convolver.setBuffer: Missing impulse path!");
 801 |                     return;
 802 |                 }
 803 |                 xhr.open("GET", impulse, true);
 804 |                 xhr.responseType = "arraybuffer";
 805 |                 xhr.onreadystatechange = function() {
 806 |                     if (xhr.readyState === 4) {
 807 |                         if (xhr.status < 300 && xhr.status > 199 || xhr.status === 302) {
 808 |                             userContext.decodeAudioData(xhr.response, function(buffer) {
 809 |                                 convolver.buffer = buffer;
 810 |                             }, function(e) {
 811 |                                 if (e) console.log("Tuna.Convolver.setBuffer: Error decoding data" + e);
 812 |                             });
 813 |                         }
 814 |                     }
 815 |                 };
 816 |                 xhr.send(null);
 817 |             }
 818 |         }
 819 |     });
 820 | 
 821 |     Tuna.prototype.Delay = function(properties) {
 822 |         if (!properties) {
 823 |             properties = this.getDefaults();
 824 |         }
 825 |         this.input = userContext.createGain();
 826 |         this.activateNode = userContext.createGain();
 827 |         this.dry = userContext.createGain();
 828 |         this.wet = userContext.createGain();
 829 |         this.filter = userContext.createBiquadFilter();
 830 |         this.delay = userContext.createDelay(10);
 831 |         this.feedbackNode = userContext.createGain();
 832 |         this.output = userContext.createGain();
 833 | 
 834 |         this.activateNode.connect(this.delay);
 835 |         this.activateNode.connect(this.dry);
 836 |         this.delay.connect(this.filter);
 837 |         this.filter.connect(this.feedbackNode);
 838 |         this.feedbackNode.connect(this.delay);
 839 |         this.feedbackNode.connect(this.wet);
 840 |         this.wet.connect(this.output);
 841 |         this.dry.connect(this.output);
 842 | 
 843 |         this.delayTime = properties.delayTime || this.defaults.delayTime.value;
 844 |         //don't use setters at init to avoid smoothing
 845 |         this.feedbackNode.gain.value = initValue(properties.feedback, this.defaults.feedback.value);
 846 |         this.wet.gain.value = initValue(properties.wetLevel, this.defaults.wetLevel.value);
 847 |         this.dry.gain.value = initValue(properties.dryLevel, this.defaults.dryLevel.value);
 848 |         this.filter.frequency.value = properties.cutoff || this.defaults.cutoff.value;
 849 |         this.filter.type = "lowpass";
 850 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 851 |     };
 852 |     Tuna.prototype.Delay.prototype = Object.create(Super, {
 853 |         name: {
 854 |             value: "Delay"
 855 |         },
 856 |         defaults: {
 857 |             writable: true,
 858 |             value: {
 859 |                 delayTime: {
 860 |                     value: 100,
 861 |                     min: 20,
 862 |                     max: 1000,
 863 |                     automatable: false,
 864 |                     type: FLOAT
 865 |                 },
 866 |                 feedback: {
 867 |                     value: 0.45,
 868 |                     min: 0,
 869 |                     max: 0.9,
 870 |                     automatable: true,
 871 |                     type: FLOAT
 872 |                 },
 873 |                 cutoff: {
 874 |                     value: 20000,
 875 |                     min: 20,
 876 |                     max: 20000,
 877 |                     automatable: true,
 878 |                     type: FLOAT
 879 |                 },
 880 |                 wetLevel: {
 881 |                     value: 0.5,
 882 |                     min: 0,
 883 |                     max: 1,
 884 |                     automatable: true,
 885 |                     type: FLOAT
 886 |                 },
 887 |                 dryLevel: {
 888 |                     value: 1,
 889 |                     min: 0,
 890 |                     max: 1,
 891 |                     automatable: true,
 892 |                     type: FLOAT
 893 |                 },
 894 |                 bypass: {
 895 |                     value: false,
 896 |                     automatable: false,
 897 |                     type: BOOLEAN
 898 |                 }
 899 |             }
 900 |         },
 901 |         delayTime: {
 902 |             enumerable: true,
 903 |             get: function() {
 904 |                 return this.delay.delayTime;
 905 |             },
 906 |             set: function(value) {
 907 |                 this.delay.delayTime.value = value / 1000;
 908 |             }
 909 |         },
 910 |         wetLevel: {
 911 |             enumerable: true,
 912 |             get: function() {
 913 |                 return this.wet.gain;
 914 |             },
 915 |             set: function(value) {
 916 |                 this.wet.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 917 |             }
 918 |         },
 919 |         dryLevel: {
 920 |             enumerable: true,
 921 |             get: function() {
 922 |                 return this.dry.gain;
 923 |             },
 924 |             set: function(value) {
 925 |                 this.dry.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 926 |             }
 927 |         },
 928 |         feedback: {
 929 |             enumerable: true,
 930 |             get: function() {
 931 |                 return this.feedbackNode.gain;
 932 |             },
 933 |             set: function(value) {
 934 |                 this.feedbackNode.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
 935 |             }
 936 |         },
 937 |         cutoff: {
 938 |             enumerable: true,
 939 |             get: function() {
 940 |                 return this.filter.frequency;
 941 |             },
 942 |             set: function(value) {
 943 |                 this.filter.frequency.setTargetAtTime(value, userContext.currentTime, 0.01);
 944 |             }
 945 |         }
 946 |     });
 947 | 
 948 |     Tuna.prototype.Filter = function(properties) {
 949 |         if (!properties) {
 950 |             properties = this.getDefaults();
 951 |         }
 952 |         this.input = userContext.createGain();
 953 |         this.activateNode = userContext.createGain();
 954 |         this.filter = userContext.createBiquadFilter();
 955 |         this.output = userContext.createGain();
 956 | 
 957 |         this.activateNode.connect(this.filter);
 958 |         this.filter.connect(this.output);
 959 | 
 960 |         //don't use setters for freq and gain at init to avoid smoothing
 961 |         this.filter.frequency.value = properties.frequency || this.defaults.frequency.value;
 962 |         this.Q = properties.resonance || this.defaults.Q.value;
 963 |         this.filterType = initValue(properties.filterType, this.defaults.filterType.value);
 964 |         this.filter.gain.value = initValue(properties.gain, this.defaults.gain.value);
 965 |         this.bypass = properties.bypass || this.defaults.bypass.value;
 966 |     };
 967 |     Tuna.prototype.Filter.prototype = Object.create(Super, {
 968 |         name: {
 969 |             value: "Filter"
 970 |         },
 971 |         defaults: {
 972 |             writable: true,
 973 |             value: {
 974 |                 frequency: {
 975 |                     value: 800,
 976 |                     min: 20,
 977 |                     max: 22050,
 978 |                     automatable: true,
 979 |                     type: FLOAT
 980 |                 },
 981 |                 Q: {
 982 |                     value: 1,
 983 |                     min: 0.001,
 984 |                     max: 100,
 985 |                     automatable: true,
 986 |                     type: FLOAT
 987 |                 },
 988 |                 gain: {
 989 |                     value: 0,
 990 |                     min: -40,
 991 |                     max: 40,
 992 |                     automatable: true,
 993 |                     type: FLOAT
 994 |                 },
 995 |                 bypass: {
 996 |                     value: false,
 997 |                     automatable: false,
 998 |                     type: BOOLEAN
 999 |                 },
1000 |                 filterType: {
1001 |                     value: "lowpass",
1002 |                     automatable: false,
1003 |                     type: STRING
1004 |                 }
1005 |             }
1006 |         },
1007 |         filterType: {
1008 |             enumerable: true,
1009 |             get: function() {
1010 |                 return this.filter.type;
1011 |             },
1012 |             set: function(value) {
1013 |                 this.filter.type = value;
1014 |             }
1015 |         },
1016 |         Q: {
1017 |             enumerable: true,
1018 |             get: function() {
1019 |                 return this.filter.Q;
1020 |             },
1021 |             set: function(value) {
1022 |                 this.filter.Q.value = value;
1023 |             }
1024 |         },
1025 |         gain: {
1026 |             enumerable: true,
1027 |             get: function() {
1028 |                 return this.filter.gain;
1029 |             },
1030 |             set: function(value) {
1031 |                 this.filter.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
1032 |             }
1033 |         },
1034 |         frequency: {
1035 |             enumerable: true,
1036 |             get: function() {
1037 |                 return this.filter.frequency;
1038 |             },
1039 |             set: function(value) {
1040 |                 this.filter.frequency.setTargetAtTime(value, userContext.currentTime, 0.01);
1041 |             }
1042 |         }
1043 |     });
1044 | 
1045 |     Tuna.prototype.Gain = function(properties) {
1046 |         if (!properties) {
1047 |             properties = this.getDefaults();
1048 |         }
1049 | 
1050 |         this.input = userContext.createGain();
1051 |         this.activateNode = userContext.createGain();
1052 |         this.gainNode = userContext.createGain();
1053 |         this.output = userContext.createGain();
1054 | 
1055 |         this.activateNode.connect(this.gainNode);
1056 |         this.gainNode.connect(this.output);
1057 | 
1058 |         //don't use setter at init to avoid smoothing
1059 |         this.gainNode.gain.value = initValue(properties.gain, this.defaults.gain.value);
1060 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1061 |     };
1062 |     Tuna.prototype.Gain.prototype = Object.create(Super, {
1063 |         name: {
1064 |             value: "Gain"
1065 |         },
1066 |         defaults: {
1067 |             writable: true,
1068 |             value: {
1069 |                 bypass: {
1070 |                     value: false,
1071 |                     automatable: false,
1072 |                     type: BOOLEAN
1073 |                 },
1074 |                 gain: {
1075 |                     value: 1.0,
1076 |                     automatable: true,
1077 |                     type: FLOAT
1078 |                 }
1079 |             }
1080 |         },
1081 |         gain: {
1082 |             enumerable: true,
1083 |             get: function() {
1084 |                 return this.gainNode.gain;
1085 |             },
1086 |             set: function(value) {
1087 |                 this.gainNode.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
1088 |             }
1089 |         }
1090 |     });
1091 | 
1092 |     Tuna.prototype.MoogFilter = function(properties) {
1093 |         if (!properties) {
1094 |             properties = this.getDefaults();
1095 |         }
1096 |         this.bufferSize = properties.bufferSize || this.defaults.bufferSize.value;
1097 | 
1098 |         this.input = userContext.createGain();
1099 |         this.activateNode = userContext.createGain();
1100 |         this.processor = userContext.createScriptProcessor(this.bufferSize, 1, 1);
1101 |         this.output = userContext.createGain();
1102 | 
1103 |         this.activateNode.connect(this.processor);
1104 |         this.processor.connect(this.output);
1105 | 
1106 |         var in1, in2, in3, in4, out1, out2, out3, out4;
1107 |         in1 = in2 = in3 = in4 = out1 = out2 = out3 = out4 = 0.0;
1108 |         var input, output, f, fb, i, length, inputFactor;
1109 |         this.processor.onaudioprocess = function(e) {
1110 |             input = e.inputBuffer.getChannelData(0);
1111 |             output = e.outputBuffer.getChannelData(0);
1112 |             f = this.cutoff * 1.16;
1113 |             inputFactor = 0.35013 * (f * f) * (f * f);
1114 |             fb = this.resonance * (1.0 - 0.15 * f * f);
1115 |             length = input.length;
1116 |             for (i = 0; i < length; i++) {
1117 |                 input[i] -= out4 * fb;
1118 |                 input[i] *= inputFactor;
1119 |                 out1 = input[i] + 0.3 * in1 + (1 - f) * out1; // Pole 1
1120 |                 in1 = input[i];
1121 |                 out2 = out1 + 0.3 * in2 + (1 - f) * out2; // Pole 2
1122 |                 in2 = out1;
1123 |                 out3 = out2 + 0.3 * in3 + (1 - f) * out3; // Pole 3
1124 |                 in3 = out2;
1125 |                 out4 = out3 + 0.3 * in4 + (1 - f) * out4; // Pole 4
1126 |                 in4 = out3;
1127 |                 output[i] = out4;
1128 |             }
1129 |         };
1130 | 
1131 |         this.cutoff = initValue(properties.cutoff, this.defaults.cutoff.value);
1132 |         this.resonance = initValue(properties.resonance, this.defaults.resonance.value);
1133 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1134 |     };
1135 |     Tuna.prototype.MoogFilter.prototype = Object.create(Super, {
1136 |         name: {
1137 |             value: "MoogFilter"
1138 |         },
1139 |         defaults: {
1140 |             writable: true,
1141 |             value: {
1142 |                 bufferSize: {
1143 |                     value: 4096,
1144 |                     min: 256,
1145 |                     max: 16384,
1146 |                     automatable: false,
1147 |                     type: INT
1148 |                 },
1149 |                 bypass: {
1150 |                     value: false,
1151 |                     automatable: false,
1152 |                     type: BOOLEAN
1153 |                 },
1154 |                 cutoff: {
1155 |                     value: 0.065,
1156 |                     min: 0.0001,
1157 |                     max: 1.0,
1158 |                     automatable: false,
1159 |                     type: FLOAT
1160 |                 },
1161 |                 resonance: {
1162 |                     value: 3.5,
1163 |                     min: 0.0,
1164 |                     max: 4.0,
1165 |                     automatable: false,
1166 |                     type: FLOAT
1167 |                 }
1168 |             }
1169 |         },
1170 |         cutoff: {
1171 |             enumerable: true,
1172 |             get: function() {
1173 |                 return this.processor.cutoff;
1174 |             },
1175 |             set: function(value) {
1176 |                 this.processor.cutoff = value;
1177 |             }
1178 |         },
1179 |         resonance: {
1180 |             enumerable: true,
1181 |             get: function() {
1182 |                 return this.processor.resonance;
1183 |             },
1184 |             set: function(value) {
1185 |                 this.processor.resonance = value;
1186 |             }
1187 |         }
1188 |     });
1189 | 
1190 |     Tuna.prototype.Overdrive = function(properties) {
1191 |         if (!properties) {
1192 |             properties = this.getDefaults();
1193 |         }
1194 |         this.input = userContext.createGain();
1195 |         this.activateNode = userContext.createGain();
1196 |         this.inputDrive = userContext.createGain();
1197 |         this.waveshaper = userContext.createWaveShaper();
1198 |         this.outputDrive = userContext.createGain();
1199 |         this.output = userContext.createGain();
1200 | 
1201 |         this.activateNode.connect(this.inputDrive);
1202 |         this.inputDrive.connect(this.waveshaper);
1203 |         this.waveshaper.connect(this.outputDrive);
1204 |         this.outputDrive.connect(this.output);
1205 | 
1206 |         this.ws_table = new Float32Array(this.k_nSamples);
1207 |         this.drive = initValue(properties.drive, this.defaults.drive.value);
1208 |         this.outputGain = initValue(properties.outputGain, this.defaults.outputGain.value);
1209 |         this.curveAmount = initValue(properties.curveAmount, this.defaults.curveAmount.value);
1210 |         this.algorithmIndex = initValue(properties.algorithmIndex, this.defaults.algorithmIndex.value);
1211 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1212 |     };
1213 |     Tuna.prototype.Overdrive.prototype = Object.create(Super, {
1214 |         name: {
1215 |             value: "Overdrive"
1216 |         },
1217 |         defaults: {
1218 |             writable: true,
1219 |             value: {
1220 |                 drive: {
1221 |                     value: 0.197,
1222 |                     min: 0,
1223 |                     max: 1,
1224 |                     automatable: true,
1225 |                     type: FLOAT,
1226 |                     scaled: true
1227 |                 },
1228 |                 outputGain: {
1229 |                     value: -9.154,
1230 |                     min: -46,
1231 |                     max: 0,
1232 |                     automatable: true,
1233 |                     type: FLOAT,
1234 |                     scaled: true
1235 |                 },
1236 |                 curveAmount: {
1237 |                     value: 0.979,
1238 |                     min: 0,
1239 |                     max: 1,
1240 |                     automatable: false,
1241 |                     type: FLOAT
1242 |                 },
1243 |                 algorithmIndex: {
1244 |                     value: 0,
1245 |                     min: 0,
1246 |                     max: 5,
1247 |                     automatable: false,
1248 |                     type: INT
1249 |                 },
1250 |                 bypass: {
1251 |                     value: false,
1252 |                     automatable: false,
1253 |                     type: BOOLEAN
1254 |                 }
1255 |             }
1256 |         },
1257 |         k_nSamples: {
1258 |             value: 8192
1259 |         },
1260 |         drive: {
1261 |             get: function() {
1262 |                 return this.inputDrive.gain;
1263 |             },
1264 |             set: function(value) {
1265 |                 this.inputDrive.gain.value = value;
1266 |             }
1267 |         },
1268 |         curveAmount: {
1269 |             get: function() {
1270 |                 return this._curveAmount;
1271 |             },
1272 |             set: function(value) {
1273 |                 this._curveAmount = value;
1274 |                 if (this._algorithmIndex === undefined) {
1275 |                     this._algorithmIndex = 0;
1276 |                 }
1277 |                 this.waveshaperAlgorithms[this._algorithmIndex](this._curveAmount, this.k_nSamples, this.ws_table);
1278 |                 this.waveshaper.curve = this.ws_table;
1279 |             }
1280 |         },
1281 |         outputGain: {
1282 |             get: function() {
1283 |                 return this.outputDrive.gain;
1284 |             },
1285 |             set: function(value) {
1286 |                 this._outputGain = dbToWAVolume(value);
1287 |                 this.outputDrive.gain.setValueAtTime(this._outputGain, userContext.currentTime, 0.01);
1288 |             }
1289 |         },
1290 |         algorithmIndex: {
1291 |             get: function() {
1292 |                 return this._algorithmIndex;
1293 |             },
1294 |             set: function(value) {
1295 |                 this._algorithmIndex = value;
1296 |                 this.curveAmount = this._curveAmount;
1297 |             }
1298 |         },
1299 |         waveshaperAlgorithms: {
1300 |             value: [
1301 |                 function(amount, n_samples, ws_table) {
1302 |                     amount = Math.min(amount, 0.9999);
1303 |                     var k = 2 * amount / (1 - amount),
1304 |                         i, x;
1305 |                     for (i = 0; i < n_samples; i++) {
1306 |                         x = i * 2 / n_samples - 1;
1307 |                         ws_table[i] = (1 + k) * x / (1 + k * Math.abs(x));
1308 |                     }
1309 |                 },
1310 |                 function(amount, n_samples, ws_table) {
1311 |                     var i, x, y;
1312 |                     for (i = 0; i < n_samples; i++) {
1313 |                         x = i * 2 / n_samples - 1;
1314 |                         y = ((0.5 * Math.pow((x + 1.4), 2)) - 1) * (y >= 0 ? 5.8 : 1.2);
1315 |                         ws_table[i] = tanh(y);
1316 |                     }
1317 |                 },
1318 |                 function(amount, n_samples, ws_table) {
1319 |                     var i, x, y, a = 1 - amount;
1320 |                     for (i = 0; i < n_samples; i++) {
1321 |                         x = i * 2 / n_samples - 1;
1322 |                         y = x < 0 ? -Math.pow(Math.abs(x), a + 0.04) : Math.pow(x, a);
1323 |                         ws_table[i] = tanh(y * 2);
1324 |                     }
1325 |                 },
1326 |                 function(amount, n_samples, ws_table) {
1327 |                     var i, x, y, abx, a = 1 - amount > 0.99 ? 0.99 : 1 - amount;
1328 |                     for (i = 0; i < n_samples; i++) {
1329 |                         x = i * 2 / n_samples - 1;
1330 |                         abx = Math.abs(x);
1331 |                         if (abx < a) {
1332 |                             y = abx;
1333 |                         } else if (abx > a) {
1334 |                             y = a + (abx - a) / (1 + Math.pow((abx - a) / (1 - a), 2));
1335 |                         } else if (abx > 1) {
1336 |                             y = abx;
1337 |                         }
1338 |                         ws_table[i] = sign(x) * y * (1 / ((a + 1) / 2));
1339 |                     }
1340 |                 },
1341 |                 function(amount, n_samples, ws_table) { // fixed curve, amount doesn't do anything, the distortion is just from the drive
1342 |                     var i, x;
1343 |                     for (i = 0; i < n_samples; i++) {
1344 |                         x = i * 2 / n_samples - 1;
1345 |                         if (x < -0.08905) {
1346 |                             ws_table[i] = (-3 / 4) * (1 - (Math.pow((1 - (Math.abs(x) - 0.032857)), 12)) + (1 / 3) * (Math.abs(x) - 0.032847)) + 0.01;
1347 |                         } else if (x >= -0.08905 && x < 0.320018) {
1348 |                             ws_table[i] = (-6.153 * (x * x)) + 3.9375 * x;
1349 |                         } else {
1350 |                             ws_table[i] = 0.630035;
1351 |                         }
1352 |                     }
1353 |                 },
1354 |                 function(amount, n_samples, ws_table) {
1355 |                     var a = 2 + Math.round(amount * 14),
1356 |                         // we go from 2 to 16 bits, keep in mind for the UI
1357 |                         bits = Math.round(Math.pow(2, a - 1)),
1358 |                         // real number of quantization steps divided by 2
1359 |                         i, x;
1360 |                     for (i = 0; i < n_samples; i++) {
1361 |                         x = i * 2 / n_samples - 1;
1362 |                         ws_table[i] = Math.round(x * bits) / bits;
1363 |                     }
1364 |                 }
1365 |             ]
1366 |         }
1367 |     });
1368 | 
1369 |     Tuna.prototype.Panner = function(properties) {
1370 |         if (!properties) {
1371 |             properties = this.getDefaults();
1372 |         }
1373 | 
1374 |         this.input = userContext.createGain();
1375 |         this.activateNode = userContext.createGain();
1376 |         this.panner = userContext.createStereoPanner();
1377 |         this.output = userContext.createGain();
1378 | 
1379 |         this.activateNode.connect(this.panner);
1380 |         this.panner.connect(this.output);
1381 | 
1382 |         this.pan = initValue(properties.pan, this.defaults.pan.value);
1383 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1384 |     };
1385 |     Tuna.prototype.Panner.prototype = Object.create(Super, {
1386 |         name: {
1387 |             value: "Panner"
1388 |         },
1389 |         defaults: {
1390 |             writable: true,
1391 |             value: {
1392 |                 bypass: {
1393 |                     value: false,
1394 |                     automatable: false,
1395 |                     type: BOOLEAN
1396 |                 },
1397 |                 pan: {
1398 |                     value: 0.0,
1399 |                     min: -1.0,
1400 |                     max: 1.0,
1401 |                     automatable: true,
1402 |                     type: FLOAT
1403 |                 }
1404 |             }
1405 |         },
1406 |         pan: {
1407 |             enumerable: true,
1408 |             get: function() {
1409 |                 return this.panner.pan;
1410 |             },
1411 |             set: function(value) {
1412 |                 this.panner.pan.value = value;
1413 |             }
1414 |         }
1415 |     });
1416 | 
1417 |     Tuna.prototype.Phaser = function(properties) {
1418 |         if (!properties) {
1419 |             properties = this.getDefaults();
1420 |         }
1421 |         this.input = userContext.createGain();
1422 |         this.splitter = this.activateNode = userContext.createChannelSplitter(2);
1423 |         this.filtersL = [];
1424 |         this.filtersR = [];
1425 |         this.feedbackGainNodeL = userContext.createGain();
1426 |         this.feedbackGainNodeR = userContext.createGain();
1427 |         this.merger = userContext.createChannelMerger(2);
1428 |         this.filteredSignal = userContext.createGain();
1429 |         this.output = userContext.createGain();
1430 |         this.lfoL = new userInstance.LFO({
1431 |             target: this.filtersL,
1432 |             callback: this.callback
1433 |         });
1434 |         this.lfoR = new userInstance.LFO({
1435 |             target: this.filtersR,
1436 |             callback: this.callback
1437 |         });
1438 | 
1439 |         var i = this.stage;
1440 |         while (i--) {
1441 |             this.filtersL[i] = userContext.createBiquadFilter();
1442 |             this.filtersR[i] = userContext.createBiquadFilter();
1443 |             this.filtersL[i].type = "allpass";
1444 |             this.filtersR[i].type = "allpass";
1445 |         }
1446 |         this.input.connect(this.splitter);
1447 |         this.input.connect(this.output);
1448 |         this.splitter.connect(this.filtersL[0], 0, 0);
1449 |         this.splitter.connect(this.filtersR[0], 1, 0);
1450 |         this.connectInOrder(this.filtersL);
1451 |         this.connectInOrder(this.filtersR);
1452 |         this.filtersL[this.stage - 1].connect(this.feedbackGainNodeL);
1453 |         this.filtersL[this.stage - 1].connect(this.merger, 0, 0);
1454 |         this.filtersR[this.stage - 1].connect(this.feedbackGainNodeR);
1455 |         this.filtersR[this.stage - 1].connect(this.merger, 0, 1);
1456 |         this.feedbackGainNodeL.connect(this.filtersL[0]);
1457 |         this.feedbackGainNodeR.connect(this.filtersR[0]);
1458 |         this.merger.connect(this.output);
1459 | 
1460 |         this.rate = initValue(properties.rate, this.defaults.rate.value);
1461 |         this.baseModulationFrequency = properties.baseModulationFrequency || this.defaults.baseModulationFrequency.value;
1462 |         this.depth = initValue(properties.depth, this.defaults.depth.value);
1463 |         this.feedback = initValue(properties.feedback, this.defaults.feedback.value);
1464 |         this.stereoPhase = initValue(properties.stereoPhase, this.defaults.stereoPhase.value);
1465 | 
1466 |         this.lfoL.activate(true);
1467 |         this.lfoR.activate(true);
1468 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1469 |     };
1470 |     Tuna.prototype.Phaser.prototype = Object.create(Super, {
1471 |         name: {
1472 |             value: "Phaser"
1473 |         },
1474 |         stage: {
1475 |             value: 4
1476 |         },
1477 |         defaults: {
1478 |             writable: true,
1479 |             value: {
1480 |                 rate: {
1481 |                     value: 0.1,
1482 |                     min: 0,
1483 |                     max: 8,
1484 |                     automatable: false,
1485 |                     type: FLOAT
1486 |                 },
1487 |                 depth: {
1488 |                     value: 0.6,
1489 |                     min: 0,
1490 |                     max: 1,
1491 |                     automatable: false,
1492 |                     type: FLOAT
1493 |                 },
1494 |                 feedback: {
1495 |                     value: 0.7,
1496 |                     min: 0,
1497 |                     max: 1,
1498 |                     automatable: false,
1499 |                     type: FLOAT
1500 |                 },
1501 |                 stereoPhase: {
1502 |                     value: 40,
1503 |                     min: 0,
1504 |                     max: 180,
1505 |                     automatable: false,
1506 |                     type: FLOAT
1507 |                 },
1508 |                 baseModulationFrequency: {
1509 |                     value: 700,
1510 |                     min: 500,
1511 |                     max: 1500,
1512 |                     automatable: false,
1513 |                     type: FLOAT
1514 |                 },
1515 |                 bypass: {
1516 |                     value: false,
1517 |                     automatable: false,
1518 |                     type: BOOLEAN
1519 |                 }
1520 |             }
1521 |         },
1522 |         callback: {
1523 |             value: function(filters, value) {
1524 |                 for (var stage = 0; stage < 4; stage++) {
1525 |                     filters[stage].frequency.value = value;
1526 |                 }
1527 |             }
1528 |         },
1529 |         depth: {
1530 |             get: function() {
1531 |                 return this._depth;
1532 |             },
1533 |             set: function(value) {
1534 |                 this._depth = value;
1535 |                 this.lfoL.oscillation = this._baseModulationFrequency * this._depth;
1536 |                 this.lfoR.oscillation = this._baseModulationFrequency * this._depth;
1537 |             }
1538 |         },
1539 |         rate: {
1540 |             get: function() {
1541 |                 return this._rate;
1542 |             },
1543 |             set: function(value) {
1544 |                 this._rate = value;
1545 |                 this.lfoL.frequency = this._rate;
1546 |                 this.lfoR.frequency = this._rate;
1547 |             }
1548 |         },
1549 |         baseModulationFrequency: {
1550 |             enumerable: true,
1551 |             get: function() {
1552 |                 return this._baseModulationFrequency;
1553 |             },
1554 |             set: function(value) {
1555 |                 this._baseModulationFrequency = value;
1556 |                 this.lfoL.offset = this._baseModulationFrequency;
1557 |                 this.lfoR.offset = this._baseModulationFrequency;
1558 |                 this.depth = this._depth;
1559 |             }
1560 |         },
1561 |         feedback: {
1562 |             get: function() {
1563 |                 return this._feedback;
1564 |             },
1565 |             set: function(value) {
1566 |                 this._feedback = value;
1567 |                 this.feedbackGainNodeL.gain.setTargetAtTime(this._feedback, userContext.currentTime, 0.01);
1568 |                 this.feedbackGainNodeR.gain.setTargetAtTime(this._feedback, userContext.currentTime, 0.01);
1569 |             }
1570 |         },
1571 |         stereoPhase: {
1572 |             get: function() {
1573 |                 return this._stereoPhase;
1574 |             },
1575 |             set: function(value) {
1576 |                 this._stereoPhase = value;
1577 |                 var newPhase = this.lfoL._phase + this._stereoPhase * Math.PI / 180;
1578 |                 newPhase = fmod(newPhase, 2 * Math.PI);
1579 |                 this.lfoR._phase = newPhase;
1580 |             }
1581 |         }
1582 |     });
1583 | 
1584 |     Tuna.prototype.PingPongDelay = function(properties) {
1585 |         if (!properties) {
1586 |             properties = this.getDefaults();
1587 |         }
1588 |         this.input = userContext.createGain();
1589 |         this.wet = userContext.createGain();
1590 |         this.stereoToMonoMix = userContext.createGain();
1591 |         this.feedbackLevel = userContext.createGain();
1592 |         this.output = userContext.createGain();
1593 |         this.delayLeft = userContext.createDelay(10);
1594 |         this.delayRight = userContext.createDelay(10);
1595 | 
1596 |         this.activateNode = userContext.createGain();
1597 |         this.splitter = userContext.createChannelSplitter(2);
1598 |         this.merger = userContext.createChannelMerger(2);
1599 | 
1600 |         this.activateNode.connect(this.splitter);
1601 |         this.splitter.connect(this.stereoToMonoMix, 0, 0);
1602 |         this.splitter.connect(this.stereoToMonoMix, 1, 0);
1603 |         this.stereoToMonoMix.gain.value = .5;
1604 |         this.stereoToMonoMix.connect(this.wet);
1605 |         this.wet.connect(this.delayLeft);
1606 |         this.feedbackLevel.connect(this.wet);
1607 |         this.delayLeft.connect(this.delayRight);
1608 |         this.delayRight.connect(this.feedbackLevel);
1609 |         this.delayLeft.connect(this.merger, 0, 0);
1610 |         this.delayRight.connect(this.merger, 0, 1);
1611 |         this.merger.connect(this.output);
1612 |         this.activateNode.connect(this.output);
1613 | 
1614 |         this.delayTimeLeft = properties.delayTimeLeft !== undefined ? properties.delayTimeLeft : this.defaults.delayTimeLeft.value;
1615 |         this.delayTimeRight = properties.delayTimeRight !== undefined ? properties.delayTimeRight : this.defaults.delayTimeRight.value;
1616 |         this.feedbackLevel.gain.value = properties.feedback !== undefined ? properties.feedback : this.defaults.feedback.value;
1617 |         this.wet.gain.value = properties.wetLevel !== undefined ? properties.wetLevel : this.defaults.wetLevel.value;
1618 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1619 |     };
1620 |     Tuna.prototype.PingPongDelay.prototype = Object.create(Super, {
1621 |         name: {
1622 |             value: "PingPongDelay"
1623 |         },
1624 |         delayTimeLeft: {
1625 |             enumerable: true,
1626 |             get: function() {
1627 |                 return this._delayTimeLeft;
1628 |             },
1629 |             set: function(value) {
1630 |                 this._delayTimeLeft = value;
1631 |                 this.delayLeft.delayTime.value = value / 1000;
1632 |             }
1633 |         },
1634 |         delayTimeRight: {
1635 |             enumerable: true,
1636 |             get: function() {
1637 |                 return this._delayTimeRight;
1638 |             },
1639 |             set: function(value) {
1640 |                 this._delayTimeRight = value;
1641 |                 this.delayRight.delayTime.value = value / 1000;
1642 |             }
1643 |         },
1644 |         wetLevel: {
1645 |             enumerable: true,
1646 |             get: function () {
1647 |                 return this.wet.gain;
1648 |             },
1649 |             set: function (value) {
1650 |                 this.wet.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
1651 |             }
1652 |         }, 
1653 |         feedback: {
1654 |             enumerable: true,
1655 |             get: function () {
1656 |                 return this.feedbackLevel.gain;
1657 |             },
1658 |             set: function (value) {
1659 |                 this.feedbackLevel.gain.setTargetAtTime(value, userContext.currentTime, 0.01);
1660 |             }
1661 |         },
1662 |         defaults: {
1663 |             writable: true,
1664 |             value: {
1665 |                 delayTimeLeft: {
1666 |                     value: 200,
1667 |                     min: 1,
1668 |                     max: 10000,
1669 |                     automatable: false,
1670 |                     type: INT
1671 |                 },
1672 |                 delayTimeRight: {
1673 |                     value: 400,
1674 |                     min: 1,
1675 |                     max: 10000,
1676 |                     automatable: false,
1677 |                     type: INT
1678 |                 },
1679 |                 feedback: {
1680 |                     value: 0.3,
1681 |                     min: 0,
1682 |                     max: 1,
1683 |                     automatable: true,
1684 |                     type: FLOAT
1685 |                 },
1686 |                 wetLevel: {
1687 |                     value: 0.5,
1688 |                     min: 0,
1689 |                     max: 1,
1690 |                     automatable: true,
1691 |                     type: FLOAT
1692 |                 },
1693 |                 bypass: {
1694 |                     value: false,
1695 |                     automatable: false,
1696 |                     type: BOOLEAN
1697 |                 }
1698 |             }
1699 |         }
1700 |     });
1701 | 
1702 |     Tuna.prototype.Tremolo = function(properties) {
1703 |         if (!properties) {
1704 |             properties = this.getDefaults();
1705 |         }
1706 |         this.input = userContext.createGain();
1707 |         this.splitter = this.activateNode = userContext.createChannelSplitter(2);
1708 |         this.amplitudeL = userContext.createGain();
1709 |         this.amplitudeR = userContext.createGain();
1710 |         this.merger = userContext.createChannelMerger(2);
1711 |         this.output = userContext.createGain();
1712 |         this.lfoL = new userInstance.LFO({
1713 |             target: this.amplitudeL.gain,
1714 |             callback: pipe
1715 |         });
1716 |         this.lfoR = new userInstance.LFO({
1717 |             target: this.amplitudeR.gain,
1718 |             callback: pipe
1719 |         });
1720 | 
1721 |         this.input.connect(this.splitter);
1722 |         this.splitter.connect(this.amplitudeL, 0);
1723 |         this.splitter.connect(this.amplitudeR, 1);
1724 |         this.amplitudeL.connect(this.merger, 0, 0);
1725 |         this.amplitudeR.connect(this.merger, 0, 1);
1726 |         this.merger.connect(this.output);
1727 | 
1728 |         this.rate = properties.rate || this.defaults.rate.value;
1729 |         this.intensity = initValue(properties.intensity, this.defaults.intensity.value);
1730 |         this.stereoPhase = initValue(properties.stereoPhase, this.defaults.stereoPhase.value);
1731 | 
1732 |         this.lfoL.offset = 1 - (this.intensity / 2);
1733 |         this.lfoR.offset = 1 - (this.intensity / 2);
1734 |         this.lfoL.phase = this.stereoPhase * Math.PI / 180;
1735 | 
1736 |         this.lfoL.activate(true);
1737 |         this.lfoR.activate(true);
1738 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1739 |     };
1740 |     Tuna.prototype.Tremolo.prototype = Object.create(Super, {
1741 |         name: {
1742 |             value: "Tremolo"
1743 |         },
1744 |         defaults: {
1745 |             writable: true,
1746 |             value: {
1747 |                 intensity: {
1748 |                     value: 0.3,
1749 |                     min: 0,
1750 |                     max: 1,
1751 |                     automatable: false,
1752 |                     type: FLOAT
1753 |                 },
1754 |                 stereoPhase: {
1755 |                     value: 0,
1756 |                     min: 0,
1757 |                     max: 180,
1758 |                     automatable: false,
1759 |                     type: FLOAT
1760 |                 },
1761 |                 rate: {
1762 |                     value: 5,
1763 |                     min: 0.1,
1764 |                     max: 11,
1765 |                     automatable: false,
1766 |                     type: FLOAT
1767 |                 },
1768 |                 bypass: {
1769 |                     value: false,
1770 |                     automatable: false,
1771 |                     type: BOOLEAN
1772 |                 }
1773 |             }
1774 |         },
1775 |         intensity: {
1776 |             enumerable: true,
1777 |             get: function() {
1778 |                 return this._intensity;
1779 |             },
1780 |             set: function(value) {
1781 |                 this._intensity = value;
1782 |                 this.lfoL.offset = 1 - this._intensity / 2;
1783 |                 this.lfoR.offset = 1 - this._intensity / 2;
1784 |                 this.lfoL.oscillation = this._intensity;
1785 |                 this.lfoR.oscillation = this._intensity;
1786 |             }
1787 |         },
1788 |         rate: {
1789 |             enumerable: true,
1790 |             get: function() {
1791 |                 return this._rate;
1792 |             },
1793 |             set: function(value) {
1794 |                 this._rate = value;
1795 |                 this.lfoL.frequency = this._rate;
1796 |                 this.lfoR.frequency = this._rate;
1797 |             }
1798 |         },
1799 |         stereoPhase: {
1800 |             enumerable: true,
1801 |             get: function() {
1802 |                 return this._stereoPhase;
1803 |             },
1804 |             set: function(value) {
1805 |                 this._stereoPhase = value;
1806 |                 var newPhase = this.lfoL._phase + this._stereoPhase * Math.PI / 180;
1807 |                 newPhase = fmod(newPhase, 2 * Math.PI);
1808 |                 this.lfoR.phase = newPhase;
1809 |             }
1810 |         }
1811 |     });
1812 | 
1813 |     Tuna.prototype.WahWah = function(properties) {
1814 |         if (!properties) {
1815 |             properties = this.getDefaults();
1816 |         }
1817 |         this.input = userContext.createGain();
1818 |         this.activateNode = userContext.createGain();
1819 |         this.envelopeFollower = new userInstance.EnvelopeFollower({
1820 |             target: this,
1821 |             callback: function(context, value) {
1822 |                 context.sweep = value;
1823 |             }
1824 |         });
1825 |         this.filterBp = userContext.createBiquadFilter();
1826 |         this.filterPeaking = userContext.createBiquadFilter();
1827 |         this.output = userContext.createGain();
1828 | 
1829 |         //Connect AudioNodes
1830 |         this.activateNode.connect(this.filterBp);
1831 |         this.filterBp.connect(this.filterPeaking);
1832 |         this.filterPeaking.connect(this.output);
1833 | 
1834 |         //Set Properties
1835 |         this.init();
1836 |         this.automode = initValue(properties.automode, this.defaults.automode.value);
1837 |         this.resonance = properties.resonance || this.defaults.resonance.value;
1838 |         this.sensitivity = initValue(properties.sensitivity, this.defaults.sensitivity.value);
1839 |         this.baseFrequency = initValue(properties.baseFrequency, this.defaults.baseFrequency.value);
1840 |         this.excursionOctaves = properties.excursionOctaves || this.defaults.excursionOctaves.value;
1841 |         this.sweep = initValue(properties.sweep, this.defaults.sweep.value);
1842 | 
1843 |         this.activateNode.gain.value = 2;
1844 |         this.envelopeFollower.activate(true);
1845 |         this.bypass = properties.bypass || this.defaults.bypass.value;
1846 |     };
1847 |     Tuna.prototype.WahWah.prototype = Object.create(Super, {
1848 |         name: {
1849 |             value: "WahWah"
1850 |         },
1851 |         defaults: {
1852 |             writable: true,
1853 |             value: {
1854 |                 automode: {
1855 |                     value: true,
1856 |                     automatable: false,
1857 |                     type: BOOLEAN
1858 |                 },
1859 |                 baseFrequency: {
1860 |                     value: 0.153,
1861 |                     min: 0,
1862 |                     max: 1,
1863 |                     automatable: false,
1864 |                     type: FLOAT
1865 |                 },
1866 |                 excursionOctaves: {
1867 |                     value: 3.3,
1868 |                     min: 1,
1869 |                     max: 6,
1870 |                     automatable: false,
1871 |                     type: FLOAT
1872 |                 },
1873 |                 sweep: {
1874 |                     value: 0.35,
1875 |                     min: 0,
1876 |                     max: 1,
1877 |                     automatable: false,
1878 |                     type: FLOAT
1879 |                 },
1880 |                 resonance: {
1881 |                     value: 19,
1882 |                     min: 1,
1883 |                     max: 100,
1884 |                     automatable: false,
1885 |                     type: FLOAT
1886 |                 },
1887 |                 sensitivity: {
1888 |                     value: -0.5,
1889 |                     min: -1,
1890 |                     max: 1,
1891 |                     automatable: false,
1892 |                     type: FLOAT
1893 |                 },
1894 |                 bypass: {
1895 |                     value: false,
1896 |                     automatable: false,
1897 |                     type: BOOLEAN
1898 |                 }
1899 |             }
1900 |         },
1901 |         automode: {
1902 |             get: function() {
1903 |                 return this._automode;
1904 |             },
1905 |             set: function(value) {
1906 |                 this._automode = value;
1907 |                 if (value) {
1908 |                     this.activateNode.connect(this.envelopeFollower.input);
1909 |                     this.envelopeFollower.activate(true);
1910 |                 } else {
1911 |                     this.envelopeFollower.activate(false);
1912 |                     this.activateNode.disconnect();
1913 |                     this.activateNode.connect(this.filterBp);
1914 |                 }
1915 |             }
1916 |         },
1917 |         filterFreqTimeout: {
1918 |             writable: true,
1919 |             value: 0
1920 |         },
1921 |         setFilterFreq: {
1922 |             value: function() {
1923 |                 try {
1924 |                     this.filterBp.frequency.value = Math.min(22050, this._baseFrequency + this._excursionFrequency * this._sweep);
1925 |                     this.filterPeaking.frequency.value = Math.min(22050, this._baseFrequency + this._excursionFrequency * this._sweep);
1926 |                 } catch (e) {
1927 |                     clearTimeout(this.filterFreqTimeout);
1928 |                     //put on the next cycle to let all init properties be set
1929 |                     this.filterFreqTimeout = setTimeout(function() {
1930 |                         this.setFilterFreq();
1931 |                     }.bind(this), 0);
1932 |                 }
1933 |             }
1934 |         },
1935 |         sweep: {
1936 |             enumerable: true,
1937 |             get: function() {
1938 |                 return this._sweep;
1939 |             },
1940 |             set: function(value) {
1941 |                 this._sweep = Math.pow(value > 1 ? 1 : value < 0 ? 0 : value, this._sensitivity);
1942 |                 this.setFilterFreq();
1943 |             }
1944 |         },
1945 |         baseFrequency: {
1946 |             enumerable: true,
1947 |             get: function() {
1948 |                 return this._baseFrequency;
1949 |             },
1950 |             set: function(value) {
1951 |                 this._baseFrequency = 50 * Math.pow(10, value * 2);
1952 |                 this._excursionFrequency = Math.min(userContext.sampleRate / 2, this.baseFrequency * Math.pow(2, this._excursionOctaves));
1953 |                 this.setFilterFreq();
1954 |             }
1955 |         },
1956 |         excursionOctaves: {
1957 |             enumerable: true,
1958 |             get: function() {
1959 |                 return this._excursionOctaves;
1960 |             },
1961 |             set: function(value) {
1962 |                 this._excursionOctaves = value;
1963 |                 this._excursionFrequency = Math.min(userContext.sampleRate / 2, this.baseFrequency * Math.pow(2, this._excursionOctaves));
1964 |                 this.setFilterFreq();
1965 |             }
1966 |         },
1967 |         sensitivity: {
1968 |             enumerable: true,
1969 |             get: function() {
1970 |                 return this._sensitivity;
1971 |             },
1972 |             set: function(value) {
1973 |                 this._sensitivity = Math.pow(10, value);
1974 |             }
1975 |         },
1976 |         resonance: {
1977 |             enumerable: true,
1978 |             get: function() {
1979 |                 return this._resonance;
1980 |             },
1981 |             set: function(value) {
1982 |                 this._resonance = value;
1983 |                 this.filterPeaking.Q.value = this._resonance;
1984 |             }
1985 |         },
1986 |         init: {
1987 |             value: function() {
1988 |                 this.output.gain.value = 1;
1989 |                 this.filterPeaking.type = "peaking";
1990 |                 this.filterBp.type = "bandpass";
1991 |                 this.filterPeaking.frequency.value = 100;
1992 |                 this.filterPeaking.gain.value = 20;
1993 |                 this.filterPeaking.Q.value = 5;
1994 |                 this.filterBp.frequency.value = 100;
1995 |                 this.filterBp.Q.value = 1;
1996 |             }
1997 |         }
1998 |     });
1999 | 
2000 |     Tuna.prototype.EnvelopeFollower = function(properties) {
2001 |         if (!properties) {
2002 |             properties = this.getDefaults();
2003 |         }
2004 |         this.input = userContext.createGain();
2005 |         this.jsNode = this.output = userContext.createScriptProcessor(this.buffersize, 1, 1);
2006 | 
2007 |         this.input.connect(this.output);
2008 | 
2009 |         this.attackTime = initValue(properties.attackTime, this.defaults.attackTime.value);
2010 |         this.releaseTime = initValue(properties.releaseTime, this.defaults.releaseTime.value);
2011 |         this._envelope = 0;
2012 |         this.target = properties.target || {};
2013 |         this.callback = properties.callback || function() {};
2014 | 
2015 |         this.bypass = properties.bypass || this.defaults.bypass.value;
2016 |     };
2017 |     Tuna.prototype.EnvelopeFollower.prototype = Object.create(Super, {
2018 |         name: {
2019 |             value: "EnvelopeFollower"
2020 |         },
2021 |         defaults: {
2022 |             value: {
2023 |                 attackTime: {
2024 |                     value: 0.003,
2025 |                     min: 0,
2026 |                     max: 0.5,
2027 |                     automatable: false,
2028 |                     type: FLOAT
2029 |                 },
2030 |                 releaseTime: {
2031 |                     value: 0.5,
2032 |                     min: 0,
2033 |                     max: 0.5,
2034 |                     automatable: false,
2035 |                     type: FLOAT
2036 |                 },
2037 |                 bypass: {
2038 |                     value: false,
2039 |                     automatable: false,
2040 |                     type: BOOLEAN
2041 |                 }
2042 |             }
2043 |         },
2044 |         buffersize: {
2045 |             value: 256
2046 |         },
2047 |         envelope: {
2048 |             value: 0
2049 |         },
2050 |         sampleRate: {
2051 |             value: 44100
2052 |         },
2053 |         attackTime: {
2054 |             enumerable: true,
2055 |             get: function() {
2056 |                 return this._attackTime;
2057 |             },
2058 |             set: function(value) {
2059 |                 this._attackTime = value;
2060 |                 this._attackC = Math.exp(-1 / this._attackTime * this.sampleRate / this.buffersize);
2061 |             }
2062 |         },
2063 |         releaseTime: {
2064 |             enumerable: true,
2065 |             get: function() {
2066 |                 return this._releaseTime;
2067 |             },
2068 |             set: function(value) {
2069 |                 this._releaseTime = value;
2070 |                 this._releaseC = Math.exp(-1 / this._releaseTime * this.sampleRate / this.buffersize);
2071 |             }
2072 |         },
2073 |         callback: {
2074 |             get: function() {
2075 |                 return this._callback;
2076 |             },
2077 |             set: function(value) {
2078 |                 if (typeof value === "function") {
2079 |                     this._callback = value;
2080 |                 } else {
2081 |                     console.error("tuna.js: " + this.name + ": Callback must be a function!");
2082 |                 }
2083 |             }
2084 |         },
2085 |         target: {
2086 |             get: function() {
2087 |                 return this._target;
2088 |             },
2089 |             set: function(value) {
2090 |                 this._target = value;
2091 |             }
2092 |         },
2093 |         activate: {
2094 |             value: function(doActivate) {
2095 |                 this.activated = doActivate;
2096 |                 if (doActivate) {
2097 |                     this.jsNode.connect(userContext.destination);
2098 |                     this.jsNode.onaudioprocess = this.returnCompute(this);
2099 |                 } else {
2100 |                     this.jsNode.disconnect();
2101 |                     this.jsNode.onaudioprocess = null;
2102 |                 }
2103 |                 if (this.activateCallback) {
2104 |                     this.activateCallback(doActivate);
2105 |                 }
2106 |             }
2107 |         },
2108 |         returnCompute: {
2109 |             value: function(instance) {
2110 |                 return function(event) {
2111 |                     instance.compute(event);
2112 |                 };
2113 |             }
2114 |         },
2115 |         compute: {
2116 |             value: function(event) {
2117 |                 var count = event.inputBuffer.getChannelData(0).length,
2118 |                     channels = event.inputBuffer.numberOfChannels,
2119 |                     current, chan, rms, i;
2120 |                 chan = rms = i = 0;
2121 | 
2122 |                 for(chan = 0; chan < channels; ++chan) {
2123 |                     for (i = 0; i < count; ++i) {
2124 |                         current = event.inputBuffer.getChannelData(chan)[i];
2125 |                         rms += (current * current);
2126 |                     }
2127 |                 }
2128 |                 rms = Math.sqrt(rms / channels);
2129 | 
2130 |                 if (this._envelope < rms) {
2131 |                     this._envelope *= this._attackC;
2132 |                     this._envelope += (1 - this._attackC) * rms;
2133 |                 } else {
2134 |                     this._envelope *= this._releaseC;
2135 |                     this._envelope += (1 - this._releaseC) * rms;
2136 |                 }
2137 |                 this._callback(this._target, this._envelope);
2138 |             }
2139 |         }
2140 |     });
2141 | 
2142 |     Tuna.prototype.LFO = function(properties) {
2143 |         if (!properties) {
2144 |             properties = this.getDefaults();
2145 |         }
2146 | 
2147 |         //Instantiate AudioNode
2148 |         this.input = userContext.createGain();
2149 |         this.output = userContext.createScriptProcessor(256, 1, 1);
2150 |         this.activateNode = userContext.destination;
2151 | 
2152 |         //Set Properties
2153 |         this.frequency = initValue(properties.frequency, this.defaults.frequency.value);
2154 |         this.offset = initValue(properties.offset, this.defaults.offset.value);
2155 |         this.oscillation = initValue(properties.oscillation, this.defaults.oscillation.value);
2156 |         this.phase = initValue(properties.phase, this.defaults.phase.value);
2157 |         this.target = properties.target || {};
2158 |         this.output.onaudioprocess = this.callback(properties.callback || function() {});
2159 |         this.bypass = properties.bypass || this.defaults.bypass.value;
2160 |     };
2161 |     Tuna.prototype.LFO.prototype = Object.create(Super, {
2162 |         name: {
2163 |             value: "LFO"
2164 |         },
2165 |         bufferSize: {
2166 |             value: 256
2167 |         },
2168 |         sampleRate: {
2169 |             value: 44100
2170 |         },
2171 |         defaults: {
2172 |             value: {
2173 |                 frequency: {
2174 |                     value: 1,
2175 |                     min: 0,
2176 |                     max: 20,
2177 |                     automatable: false,
2178 |                     type: FLOAT
2179 |                 },
2180 |                 offset: {
2181 |                     value: 0.85,
2182 |                     min: 0,
2183 |                     max: 22049,
2184 |                     automatable: false,
2185 |                     type: FLOAT
2186 |                 },
2187 |                 oscillation: {
2188 |                     value: 0.3,
2189 |                     min: -22050,
2190 |                     max: 22050,
2191 |                     automatable: false,
2192 |                     type: FLOAT
2193 |                 },
2194 |                 phase: {
2195 |                     value: 0,
2196 |                     min: 0,
2197 |                     max: 2 * Math.PI,
2198 |                     automatable: false,
2199 |                     type: FLOAT
2200 |                 },
2201 |                 bypass: {
2202 |                     value: false,
2203 |                     automatable: false,
2204 |                     type: BOOLEAN
2205 |                 }
2206 |             }
2207 |         },
2208 |         frequency: {
2209 |             get: function() {
2210 |                 return this._frequency;
2211 |             },
2212 |             set: function(value) {
2213 |                 this._frequency = value;
2214 |                 this._phaseInc = 2 * Math.PI * this._frequency * this.bufferSize / this.sampleRate;
2215 |             }
2216 |         },
2217 |         offset: {
2218 |             get: function() {
2219 |                 return this._offset;
2220 |             },
2221 |             set: function(value) {
2222 |                 this._offset = value;
2223 |             }
2224 |         },
2225 |         oscillation: {
2226 |             get: function() {
2227 |                 return this._oscillation;
2228 |             },
2229 |             set: function(value) {
2230 |                 this._oscillation = value;
2231 |             }
2232 |         },
2233 |         phase: {
2234 |             get: function() {
2235 |                 return this._phase;
2236 |             },
2237 |             set: function(value) {
2238 |                 this._phase = value;
2239 |             }
2240 |         },
2241 |         target: {
2242 |             get: function() {
2243 |                 return this._target;
2244 |             },
2245 |             set: function(value) {
2246 |                 this._target = value;
2247 |             }
2248 |         },
2249 |         activate: {
2250 |             value: function(doActivate) {
2251 |                 if (doActivate) {
2252 |                     this.output.connect(userContext.destination);
2253 |                     if (this.activateCallback) {
2254 |                         this.activateCallback(doActivate);
2255 |                     }
2256 |                 } else {
2257 |                     this.output.disconnect();
2258 |                 }
2259 |             }
2260 |         },
2261 |         callback: {
2262 |             value: function(callback) {
2263 |                 var that = this;
2264 |                 return function() {
2265 |                     that._phase += that._phaseInc;
2266 |                     if (that._phase > 2 * Math.PI) {
2267 |                         that._phase = 0;
2268 |                     }
2269 |                     callback(that._target, that._offset + that._oscillation * Math.sin(that._phase));
2270 |                 };
2271 |             }
2272 |         }
2273 |     });
2274 | 
2275 |     Tuna.toString = Tuna.prototype.toString = function() {
2276 |         return "Please visit https://github.com/Theodeus/tuna/wiki for instructions on how to use Tuna.js";
2277 |     };
2278 | })();
2279 | 


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