├── ChangeLog.txt ├── LICENSE.txt ├── Makefile ├── README.md ├── VERSION ├── additive_voice.cpp ├── build ├── additive_voice_0.71.bin ├── additive_voice_0.74.bin ├── additive_voice_0.75.bin ├── additive_voice_0.76.bin └── additive_voice_latest.bin └── compile.sh /ChangeLog.txt: -------------------------------------------------------------------------------- 1 | Version 0.76 2 | 2020-12-15 Francesco Stablum 3 | * The audio input 1 is now an LFO or audio-rate frequency modulation input. 4 | This input is not DC-coupled, so patching constant voltages will not work. 5 | Anyways, it's possible to add LFOs or even audio rate modulation to it. 6 | The input voltage follows the 1V/Octave convention, so an LFO that peaks 7 | at +1V and -1V will make the frequencies of all the partials shift of one 8 | octave higher and one lower. 9 | * The Gate input 1 is now a sync input to to reset the phase of all the 10 | partials. The phase is configured from Audio input 4 in this way: 11 | when the sampled input is 0, then all phases are zero; 12 | with larger inputs the phase spread among the partials is getting larger. 13 | This means that the first partial will always be reset with phase 0 and the 14 | last partial is going to have the largest phase value: 15 | consider the last partial: the input value is divided by 5 and multiplied 16 | by 2\*pi (hence voltages from 0 to 5V represent the entire circle). 17 | All the partials between the first and the last will have intermediate 18 | phase values that are also proportional to the partial index. 19 | This means that the new phase of the partial with index `p` is calculated 20 | as `in4*(2*pi)*p/(5*maxp)` 21 | * Capped maximum value of the partials to avoid glitches: maximum value is 22 | now 40 for Sine and the Poly\* waveforms, 80 for all other waveforms 23 | * Renamed acronym for normal comb and different comb to CN and CD 24 | * The fundamental is transposed one octave lower 25 | * Changed the startup preset to something more interesting (30 partials, comb) 26 | * 1 decimal value floating point print of fundamental input voltage 27 | 28 | Version 0.75 29 | 2020-12-12 Francesco Stablum 30 | 31 | * Stretch parameter is now represented in 1V/Octave format, so C0 is a 32 | multiplier of 0, C1 => 1, C2=> 2, C3 => 3 etc. This results in more harmonic results 33 | in sending pitch information to this parameter. 34 | 35 | Version 0.74 36 | 2020-12-12 Francesco Stablum 37 | 38 | * Changed naming of some parameters and settings 39 | * Human-readable abbreviations of the wave shapes instead of numbers 40 | * New "normal" comb filter amplitude scheme C1: various notches that can be shifted with the knob and CV input 41 | * New "different" comb filter amplitude scheme C2: similar to C1 but the frequency of the notches gets increases as the partial index get higher 42 | * Added a graphical visualization of the amplitude of the first 30 partials by using ASCII tricks 43 | 44 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | VERSION=$(shell cat VERSION) 2 | 3 | C_DEFS = -DVERSION=\"$(VERSION)\" 4 | 5 | # Project Name 6 | TARGET = additive_voice_$(VERSION) 7 | 8 | # Sources 9 | CPP_SOURCES = additive_voice.cpp 10 | 11 | # Library Locations 12 | LIBDAISY_DIR = ../../libdaisy 13 | DAISYSP_DIR = ../../DaisySP 14 | 15 | # Core location, and generic Makefile. 16 | SYSTEM_FILES_DIR = $(LIBDAISY_DIR)/core 17 | 18 | include $(SYSTEM_FILES_DIR)/Makefile 19 | 20 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/stablum/AdditiveVoice/9b983211a84aa4542e00177068d3880784b4a42f/README.md -------------------------------------------------------------------------------- /VERSION: -------------------------------------------------------------------------------- 1 | 0.76 -------------------------------------------------------------------------------- /additive_voice.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | Frablum's Additive Synthesis Voice 3 | Copyright (C) 2020 Francesco 'Frablum' Stablum 4 | 5 | This program is free software: you can redistribute it and/or modify 6 | it under the terms of the GNU General Public License as published by 7 | the Free Software Foundation, either version 3 of the License, or 8 | (at your option) any later version. 9 | 10 | This program is distributed in the hope that it will be useful, 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 | GNU General Public License for more details. 14 | 15 | You should have received a copy of the GNU General Public License 16 | along with this program. If not, see . 17 | */ 18 | #include "daisysp.h" 19 | #include "daisy_patch.h" 20 | #include 21 | #include 22 | 23 | #define MIN_PARTIALS 1 24 | #define STARTUP_PARTIALS 30; 25 | #define STARTUP_AMPS 5 26 | #define STARTUP_WAVE 0 27 | #define STARTUP_POLY 1 28 | #define STARTUP_MILD 7 29 | #define TRANSPOSE_OCTAVES -1 30 | 31 | #define MIN_SLOPE 1 32 | #define MAX_VOICES 1 33 | #define MAXP 80 34 | #define DEFAULT_FONT Font_6x8 35 | #define ROW_HEIGHT 10 36 | using namespace daisy; 37 | using namespace daisysp; 38 | 39 | DaisyPatch patch; 40 | Oscillator oscs[MAX_VOICES][MAXP]; 41 | float as[MAXP]; 42 | Parameter constantctrl, stretchctrl, ampctrl; 43 | float dbg; 44 | int partials = STARTUP_PARTIALS; 45 | int amps = STARTUP_AMPS; 46 | int wave = STARTUP_WAVE; 47 | int poly = STARTUP_POLY; 48 | int mild = STARTUP_MILD; 49 | int num_waves = Oscillator::WAVE_LAST; 50 | float normalizer = MAXP; 51 | bool encoder_pressed_prev = false; 52 | enum 53 | { 54 | P_PARTIALS, 55 | P_AMPS, 56 | P_MILD, 57 | P_WAVE, 58 | P_POLY, 59 | P_LAST 60 | }; 61 | 62 | enum 63 | { 64 | A_EXP, 65 | A_LP, 66 | A_BP, 67 | A_HP, 68 | A_NOTCH, 69 | A_COMB, 70 | A_COMB_DIFFERENT, 71 | A_LAST 72 | }; 73 | std::string amps_str[] = { "RE","LP","BP","HP","N","CN","CD"}; 74 | std::string wave_str[] = {"Sin","Tri","Saw","Rmp","Sqr","PTr","PSw","PSq"}; 75 | int max_partials[] = { 40 , MAXP, MAXP, MAXP, MAXP, 40 , 40 , 40 }; 76 | int param_selected = P_PARTIALS; 77 | 78 | float vtof(float voltage) 79 | { 80 | float freq = powf(2.f, voltage) * 55; 81 | return freq; 82 | } 83 | 84 | float GetFundV(void) 85 | { 86 | float in = patch.GetCtrlValue((DaisyPatch::Ctrl)0); 87 | float voltage = in * 5.0f + TRANSPOSE_OCTAVES ; 88 | return voltage; 89 | } 90 | 91 | float GetStretchV(void) 92 | { 93 | float in = patch.GetCtrlValue((DaisyPatch::Ctrl)1); 94 | float voltage = in * 5.0f; 95 | return voltage; 96 | } 97 | static void AudioCallback(float **in, float **out, size_t size) 98 | { 99 | float sum, con, stretch, amp, a, fundf, fundv; 100 | float samples[MAXP]; 101 | 102 | patch.UpdateAnalogControls(); 103 | 104 | stretch = GetStretchV();//stretchctrl.Process(); 105 | con = constantctrl.Process(); 106 | amp = ampctrl.Process(); 107 | 108 | bool sync = patch.gate_input[0].Trig(); 109 | 110 | for (int voice=0; voice < poly; voice++) { 111 | if(voice==0) { 112 | fundv = GetFundV(); 113 | fundf = vtof(fundv); 114 | } else { 115 | continue; 116 | } 117 | for (int par=0; par < partials; par++) { 118 | 119 | float freq = fundf + par*fundf*stretch + par*con; 120 | freq += vtof(in[0][0] * 5.0f); 121 | /* 122 | if(par % 2 == 0){ 123 | freq += in[1][0] * 100; 124 | freq += in[2][0] * 100; 125 | } else { 126 | freq -= in[1][0] * 100; 127 | } 128 | if(par%3 == 2) { 129 | freq -= in[3][0] * 100; 130 | }*/ 131 | if(sync) { 132 | oscs[voice][par].Reset(); 133 | oscs[voice][par].PhaseAdd(in[3][0]*((float)par)/((float)partials)); 134 | } 135 | oscs[voice][par].SetFreq(freq); 136 | //oscs[j].SetFreq(fundf+(j*con)); 137 | 138 | oscs[voice][par].SetWaveform(wave); 139 | a = 0;// (1 - abs(amp*2-1)) * 1; // middle: flat 140 | 141 | switch(amps) { 142 | case A_EXP: 143 | if(amp <= 0.5) { // between 0 and 0.5 144 | a += (1/(par*(2*(0.5-amp))+1)); // first half to middle: exponential 145 | } else { // between 0.5 and 1 146 | a += (1/(1+(partials-par-1)*((amp-0.5)*2))); //middle to second half: exponential on reversed order 147 | } 148 | break; 149 | case A_LP: 150 | if(par < amp*partials) { 151 | a = 1; 152 | } else if(par > amp*partials + mild){ 153 | a = 0; 154 | } else { 155 | a = 1 - (par - amp*partials)/mild; 156 | } 157 | break; 158 | case A_BP: 159 | if(par < amp*partials - mild) { 160 | a = 0; 161 | } else if(par > amp*partials + mild){ 162 | a = 0; 163 | } else if(par < amp*partials){ 164 | a = 1 - (amp*partials - par)/(mild); 165 | } else if(par > amp*partials){ 166 | a = 1 - (par - amp*partials)/(mild); 167 | } 168 | break; 169 | case A_HP: 170 | if(par < amp*partials) { 171 | a = 0; 172 | } else if(par > amp*partials + mild){ 173 | a = 1; 174 | } else { 175 | a = (par - amp*partials)/mild; 176 | } 177 | break; 178 | case A_NOTCH: 179 | if(par < amp*partials - mild) { 180 | a = 1; 181 | } else if(par > amp*partials + mild){ 182 | a = 1; 183 | } else if(par < amp*partials){ 184 | a = (amp*partials - par)/(mild); 185 | } else if(par > amp*partials){ 186 | a = (par - amp*partials)/(mild); 187 | } 188 | break; 189 | case A_COMB: 190 | { 191 | float offsetted = par + mild*2*amp; 192 | float tmp =fmod(offsetted,mild)/mild; 193 | if( fmod((offsetted / mild), 2.f) >=1.f) { 194 | a = tmp; 195 | } else { 196 | a = 1 - tmp; 197 | } 198 | } 199 | break; 200 | case A_COMB_DIFFERENT: 201 | { 202 | float curr_mild = ((float)mild) / (((float)par)/2.f + 1.f); 203 | float offsetted = ((float)par) + curr_mild*2*amp; 204 | float tmp =fmod(offsetted,curr_mild)/curr_mild; 205 | if( fmod((offsetted / curr_mild), 2.f) >=1.f) { 206 | a = tmp; 207 | } else { 208 | a = 1 - tmp; 209 | } 210 | } 211 | break; 212 | } 213 | as[par] = a; 214 | oscs[voice][par].SetAmp(a); 215 | } 216 | } 217 | for (size_t i = 0; i < size; i ++) 218 | { 219 | sum = 0; 220 | 221 | for (int par=0; par < partials; par++) { 222 | samples[par] = 0; 223 | for(int voice=0; voice3000){ 357 | screencycle=0; 358 | } else { 359 | continue; 360 | } 361 | 362 | patch.display.SetCursor(0,0); 363 | std::string str = "F:"; 364 | float fundv = GetFundV();//fundctrl.Process(); 365 | float fundf = vtof(fundv); 366 | str += std::to_string((int)fundv); 367 | str += "."; 368 | str += std::to_string((int)(abs(fundv)*10)%10); 369 | str += ":"; 370 | str += std::to_string((int)fundf); 371 | str += "Hz "; 372 | str += "P"; 373 | str += (param_selected == P_PARTIALS)?">":":"; 374 | str += std::to_string(partials); 375 | str += (partials>38||mild>partials?"!":((param_selected == P_PARTIALS)?"<":"")); 376 | char* cstr = &str[0]; 377 | patch.display.WriteString(cstr, DEFAULT_FONT, true); 378 | 379 | patch.display.SetCursor(0,1*ROW_HEIGHT); 380 | str = "Amp"; 381 | str += (param_selected == P_AMPS)?">":":"; 382 | str += amps_str[amps]; 383 | str += (param_selected == P_AMPS)?"<":" "; 384 | str += "Mld"; 385 | str += (param_selected == P_MILD)?">":":"; 386 | str += std::to_string(mild); 387 | str += (mild>partials?"!":((param_selected == P_MILD)?"<":" ")); 388 | patch.display.WriteString(cstr, DEFAULT_FONT, true); 389 | 390 | patch.display.SetCursor(0,2*ROW_HEIGHT); 391 | str = "W"; 392 | str += (param_selected == P_WAVE)?">":":"; 393 | str += wave_str[wave]; 394 | str += (param_selected == P_WAVE)?"<":" "; 395 | str += "Poly"; 396 | str += (param_selected == P_POLY)?">":":"; 397 | str += std::to_string(poly); 398 | str += (param_selected == P_POLY)?"<":""; 399 | patch.display.WriteString(cstr, DEFAULT_FONT, true); 400 | 401 | float stretch = GetStretchV();//stretchctrl.Process(); 402 | patch.display.SetCursor(0,3*ROW_HEIGHT); 403 | str = "Stretch:"; 404 | if(stretch<0){ 405 | str += "-"; 406 | } 407 | str += std::to_string(((int)abs(stretch))); 408 | str += "."; 409 | str += std::to_string((int)(abs(stretch)*10)%10); 410 | str += std::to_string((int)(abs(stretch)*100)%10); 411 | str += std::to_string((int)(abs(stretch)*1000)%10); 412 | 413 | patch.display.WriteString(cstr, DEFAULT_FONT, true); 414 | 415 | float con = constantctrl.Process(); 416 | patch.display.SetCursor(0,4*ROW_HEIGHT); 417 | str = "Const:"; 418 | str += std::to_string(((int)con)); 419 | if(con < 100) { 420 | str += "."; 421 | str += std::to_string((int)(abs(con)*10)%10); 422 | } 423 | if(con < 10) { 424 | str += std::to_string((int)(abs(con)*100)%10); 425 | } 426 | str+="Hz"; 427 | patch.display.WriteString(cstr,DEFAULT_FONT, true); 428 | patch.display.Update(); 429 | patch.display.SetCursor(0,5*ROW_HEIGHT); 430 | str = ""; 431 | for(int i = 0 ; i < std::min(partials,30)-1 ; i+=2) { 432 | if(as[i] < 0.5 && as[i+1] >= 0.5) { 433 | str += "/"; 434 | } else if(as[i] >= 0.5 && as[i+1] >= 0.5) { 435 | str += "^"; 436 | } else if(as[i] >= 0.5 && as[i+1] < 0.5) { 437 | str += "\\"; 438 | } else if(as[i] >= 0.2 || as[i] >= 0.2) { 439 | str +="-"; 440 | } else { 441 | str +="_"; 442 | } 443 | } 444 | patch.display.WriteString(cstr,DEFAULT_FONT, true); 445 | patch.display.Update(); 446 | } 447 | } 448 | -------------------------------------------------------------------------------- /build/additive_voice_0.71.bin: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/stablum/AdditiveVoice/9b983211a84aa4542e00177068d3880784b4a42f/build/additive_voice_0.71.bin -------------------------------------------------------------------------------- /build/additive_voice_0.74.bin: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/stablum/AdditiveVoice/9b983211a84aa4542e00177068d3880784b4a42f/build/additive_voice_0.74.bin -------------------------------------------------------------------------------- /build/additive_voice_0.75.bin: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/stablum/AdditiveVoice/9b983211a84aa4542e00177068d3880784b4a42f/build/additive_voice_0.75.bin -------------------------------------------------------------------------------- /build/additive_voice_0.76.bin: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/stablum/AdditiveVoice/9b983211a84aa4542e00177068d3880784b4a42f/build/additive_voice_0.76.bin -------------------------------------------------------------------------------- /build/additive_voice_latest.bin: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/stablum/AdditiveVoice/9b983211a84aa4542e00177068d3880784b4a42f/build/additive_voice_latest.bin -------------------------------------------------------------------------------- /compile.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | VERSION=$(cat VERSION) 3 | make clean 4 | make 5 | cp build/additive_voice_$VERSION.bin build/additive_voice_latest.bin 6 | git add build/additive_voice_latest.bin 7 | 8 | --------------------------------------------------------------------------------