├── .github └── workflows │ ├── build.yml │ └── deploy.yml ├── .gitignore ├── CHANGELOG.md ├── LICENSE ├── README.md ├── docs ├── Makefile ├── conf.py ├── index.rst ├── requirements.txt └── synthesizer.rst ├── example ├── play_440hz.py ├── play_chord.py ├── play_pychord.py └── write_wave.py ├── requirements.txt ├── setup.cfg ├── setup.py ├── synthesizer ├── __init__.py ├── frequency.py ├── player.py ├── synthesizer.py └── writer.py └── test ├── __init__.py ├── test_frequency.py ├── test_player.py ├── test_synthesizer.py └── test_writer.py /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | name: Build 2 | 3 | on: [push] 4 | 5 | jobs: 6 | build: 7 | runs-on: ubuntu-20.04 8 | strategy: 9 | matrix: 10 | python-version: ["3.6", "3.7", "3.8", "3.9"] 11 | 12 | steps: 13 | - uses: actions/checkout@v2 14 | - name: Set up Python ${{ matrix.python-version }} 15 | uses: actions/setup-python@v2 16 | with: 17 | python-version: ${{ matrix.python-version }} 18 | - name: Install dependencies 19 | run: | 20 | sudo apt-get -qq update 21 | sudo apt-get install -y portaudio19-dev 22 | - name: Install python dependencies 23 | run: | 24 | python -m pip install --upgrade pip 25 | pip install nose parameterized 26 | pip install -r requirements.txt 27 | - name: Run test 28 | run: | 29 | python setup.py test 30 | -------------------------------------------------------------------------------- /.github/workflows/deploy.yml: -------------------------------------------------------------------------------- 1 | name: Upload Python Package 2 | 3 | on: 4 | create: 5 | tags: 6 | - v* 7 | 8 | jobs: 9 | deploy: 10 | runs-on: ubuntu-latest 11 | steps: 12 | - uses: actions/checkout@v2 13 | - name: Set up Python 14 | uses: actions/setup-python@v2 15 | with: 16 | python-version: '3.x' 17 | - name: Install dependencies 18 | run: | 19 | python -m pip install --upgrade pip 20 | pip install setuptools wheel twine 21 | - name: Build and publish 22 | env: 23 | TWINE_USERNAME: __token__ 24 | TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }} 25 | run: | 26 | python setup.py sdist bdist_wheel 27 | twine upload dist/* 28 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | env/ 12 | build/ 13 | develop-eggs/ 14 | dist/ 15 | downloads/ 16 | eggs/ 17 | .eggs/ 18 | lib/ 19 | lib64/ 20 | parts/ 21 | sdist/ 22 | var/ 23 | wheels/ 24 | *.egg-info/ 25 | .installed.cfg 26 | *.egg 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *.cover 47 | .hypothesis/ 48 | 49 | # Translations 50 | *.mo 51 | *.pot 52 | 53 | # Django stuff: 54 | *.log 55 | local_settings.py 56 | 57 | # Flask stuff: 58 | instance/ 59 | .webassets-cache 60 | 61 | # Scrapy stuff: 62 | .scrapy 63 | 64 | # Sphinx documentation 65 | docs/_build/ 66 | 67 | # PyBuilder 68 | target/ 69 | 70 | # Jupyter Notebook 71 | .ipynb_checkpoints 72 | 73 | # pyenv 74 | .python-version 75 | 76 | # celery beat schedule file 77 | celerybeat-schedule 78 | 79 | # SageMath parsed files 80 | *.sage.py 81 | 82 | # dotenv 83 | .env 84 | 85 | # virtualenv 86 | .venv 87 | venv/ 88 | ENV/ 89 | 90 | # Spyder project settings 91 | .spyderproject 92 | .spyproject 93 | 94 | # Rope project settings 95 | .ropeproject 96 | 97 | # mkdocs documentation 98 | /site 99 | 100 | # mypy 101 | .mypy_cache/ 102 | 103 | # Jetbrains IDE 104 | .idea/ 105 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | 3 | ## Forthcoming 4 | 5 | - Add example to integrate with [PyChord](https://github.com/yuma-m/pychord). 6 | 7 | ## 0.2.0 8 | 9 | - Support scale expression to generate chord. 10 | 11 | ## 0.1.5 12 | 13 | - Support triangle wave. 14 | - Contributor: @AntiMatterAMA 15 | 16 | ## 0.1.4 17 | 18 | - Fix channels of Player class from 2 to 1 to play proper sound. 19 | 20 | ## 0.1.3 21 | 22 | - Specify audio output device. 23 | - Add Writer class. 24 | 25 | ## 0.1.2 26 | 27 | - Add generate_chord method. 28 | 29 | ## 0.1.1 30 | 31 | - Add Synthesizer and Player classes. 32 | - Generate and play constant frequency wave. 33 | 34 | ## 0.1.0 35 | 36 | - Initial version. 37 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 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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Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. 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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 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 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 | {project} Copyright (C) {year} {fullname} 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Python synthesizer ![Build Status](https://github.com/yuma-m/synthesizer/actions/workflows/build.yml/badge.svg) [![Documentation Status](https://readthedocs.org/projects/synthesizer/badge/?version=latest)](http://synthesizer.readthedocs.io/en/latest/?badge=latest) 2 | 3 | - Virtual analog synthesizer. 4 | 5 | ## Installation 6 | 7 | ```bash 8 | $ pip install synthesizer 9 | ``` 10 | 11 | ### Install dependencies 12 | 13 | #### Ubuntu 14 | 15 | ```bash 16 | $ apt install portaudio19-dev 17 | $ pip install pyaudio 18 | ``` 19 | 20 | ### macOS 21 | 22 | ```bash 23 | $ brew install portaudio 24 | $ pip install pyaudio 25 | ``` 26 | 27 | ## Basic usage 28 | 29 | ### Play 440Hz sine wave 30 | 31 | ```python 32 | >>> from synthesizer import Player, Synthesizer, Waveform 33 | 34 | 35 | >>> player = Player() 36 | >>> player.open_stream() 37 | >>> synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False) 38 | # Play A4 39 | >>> player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0)) 40 | ``` 41 | 42 | ### Play chord 43 | 44 | ```python 45 | # Play C major 46 | >>> chord = ["C3", "E3", "G3"] 47 | >>> player.play_wave(synthesizer.generate_chord(chord, 3.0)) 48 | 49 | # You can also specify frequencies to play just intonation 50 | >>> chord = [440.0, 550.0, 660.0] 51 | >>> player.play_wave(synthesizer.generate_chord(chord, 3.0)) 52 | ``` 53 | 54 | You can use [PyChord](https://github.com/yuma-m/pychord) to handle chords easily. 55 | 56 | ```python 57 | >>> from pychord import Chord 58 | >>> chord = Chord("Dm7/G") 59 | >>> player.play_wave(synthesizer.generate_chord(chord.components_with_pitch(root_pitch=3), 3.0)) 60 | ``` 61 | 62 | ### Specify audio device 63 | 64 | ```python 65 | >>> player.enumerate_device() 66 | # index: 00, name: "Built-in Microphone", rate: 44100 67 | # index: 01, name: "Built-in Output", rate: 44100 68 | # index: 02, name: "UA-25EX 44.1kHz", rate: 44100 69 | >>> player.open_stream(device_name="UA-25EX") 70 | ``` 71 | 72 | ### Write wav file 73 | 74 | ```python 75 | >>> from synthesizer import Writer 76 | >>> writer = Writer() 77 | 78 | >>> chord = ["C4", "E4", "G4"] 79 | >>> wave = synthesizer.generate_chord(chord, 3.0) 80 | >>> writer.write_wave("path/to/your.wav", wave) 81 | ``` 82 | 83 | ## Examples 84 | 85 | ### play_pychord.py 86 | 87 | Play chords using [PyChord](https://github.com/yuma-m/pychord). 88 | 89 | ```bash 90 | pip install pychord>=0.5.0 91 | python example/play_pychord.py A C#m7 DM7 Bm7/E A 92 | ``` 93 | 94 | ## Supported OS 95 | 96 | - macOS 10.12 and above 97 | - Ubuntu 16.04 98 | 99 | ## Supported versions 100 | 101 | - Python 2.7 102 | - Python 3.5 and above 103 | 104 | ## Author 105 | 106 | - [Yuma Mihira](http://yurax2.com/) 107 | 108 | ## License 109 | 110 | - GPL v3 License 111 | 112 | ## Links 113 | 114 | - PyPI: https://pypi.python.org/pypi/synthesizer 115 | - GitHub: https://github.com/yuma-m/synthesizer 116 | - Document: https://synthesizer.readthedocs.io 117 | -------------------------------------------------------------------------------- /docs/Makefile: -------------------------------------------------------------------------------- 1 | # Makefile for Sphinx documentation 2 | # 3 | 4 | # You can set these variables from the command line. 5 | SPHINXOPTS = 6 | SPHINXBUILD = sphinx-build 7 | PAPER = 8 | BUILDDIR = _build 9 | 10 | # Internal variables. 11 | PAPEROPT_a4 = -D latex_elements.papersize=a4 12 | PAPEROPT_letter = -D latex_elements.papersize=letter 13 | ALLSPHINXOPTS = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) . 14 | # the i18n builder cannot share the environment and doctrees with the others 15 | I18NSPHINXOPTS = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) . 16 | 17 | .PHONY: help 18 | help: 19 | @echo "Please use \`make ' where is one of" 20 | @echo " html to make standalone HTML files" 21 | @echo " dirhtml to make HTML files named index.html in directories" 22 | @echo " singlehtml to make a single large HTML file" 23 | @echo " pickle to make pickle files" 24 | @echo " json to make JSON files" 25 | @echo " htmlhelp to make HTML files and an HTML help project" 26 | @echo " qthelp to make HTML files and a qthelp project" 27 | @echo " applehelp to make an Apple Help Book" 28 | @echo " devhelp to make HTML files and a Devhelp project" 29 | @echo " epub to make an epub" 30 | @echo " epub3 to make an epub3" 31 | @echo " latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter" 32 | @echo " latexpdf to make LaTeX files and run them through pdflatex" 33 | @echo " latexpdfja to make LaTeX files and run them through platex/dvipdfmx" 34 | @echo " lualatexpdf to make LaTeX files and run them through lualatex" 35 | @echo " xelatexpdf to make LaTeX files and run them through xelatex" 36 | @echo " text to make text files" 37 | @echo " man to make manual pages" 38 | @echo " texinfo to make Texinfo files" 39 | @echo " info to make Texinfo files and run them through makeinfo" 40 | @echo " gettext to make PO message catalogs" 41 | @echo " changes to make an overview of all changed/added/deprecated items" 42 | @echo " xml to make Docutils-native XML files" 43 | @echo " pseudoxml to make pseudoxml-XML files for display purposes" 44 | @echo " linkcheck to check all external links for integrity" 45 | @echo " doctest to run all doctests embedded in the documentation (if enabled)" 46 | @echo " coverage to run coverage check of the documentation (if enabled)" 47 | @echo " dummy to check syntax errors of document sources" 48 | 49 | .PHONY: clean 50 | clean: 51 | rm -rf $(BUILDDIR)/* 52 | 53 | .PHONY: html 54 | html: 55 | $(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html 56 | @echo 57 | @echo "Build finished. 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The XML files are in $(BUILDDIR)/xml." 230 | 231 | .PHONY: pseudoxml 232 | pseudoxml: 233 | $(SPHINXBUILD) -b pseudoxml $(ALLSPHINXOPTS) $(BUILDDIR)/pseudoxml 234 | @echo 235 | @echo "Build finished. The pseudo-XML files are in $(BUILDDIR)/pseudoxml." 236 | 237 | .PHONY: dummy 238 | dummy: 239 | $(SPHINXBUILD) -b dummy $(ALLSPHINXOPTS) $(BUILDDIR)/dummy 240 | @echo 241 | @echo "Build finished. Dummy builder generates no files." 242 | -------------------------------------------------------------------------------- /docs/conf.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # synthesizer documentation build configuration file, created by 4 | # sphinx-quickstart on Sat Dec 31 14:51:42 2016. 5 | # 6 | # This file is execfile()d with the current directory set to its 7 | # containing dir. 8 | # 9 | # Note that not all possible configuration values are present in this 10 | # autogenerated file. 11 | # 12 | # All configuration values have a default; values that are commented out 13 | # serve to show the default. 14 | 15 | # If extensions (or modules to document with autodoc) are in another directory, 16 | # add these directories to sys.path here. If the directory is relative to the 17 | # documentation root, use os.path.abspath to make it absolute, like shown here. 18 | # 19 | # import os 20 | # import sys 21 | # sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), '../synthesizer')) 22 | 23 | 24 | # -- General configuration ------------------------------------------------ 25 | 26 | # If your documentation needs a minimal Sphinx version, state it here. 27 | # 28 | # needs_sphinx = '1.0' 29 | 30 | # Add any Sphinx extension module names here, as strings. They can be 31 | # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom 32 | # ones. 33 | extensions = ['sphinx.ext.autodoc', 34 | 'sphinx.ext.todo', 35 | 'sphinx.ext.viewcode'] 36 | 37 | # Add any paths that contain templates here, relative to this directory. 38 | templates_path = ['_templates'] 39 | 40 | # The suffix(es) of source filenames. 41 | # You can specify multiple suffix as a list of string: 42 | # 43 | # source_suffix = ['.rst', '.md'] 44 | source_suffix = '.rst' 45 | 46 | # The master toctree document. 47 | master_doc = 'index' 48 | 49 | # General information about the project. 50 | project = u'synthesizer' 51 | copyright = u'2017, Yuma Mihira' 52 | author = u'Yuma Mihira' 53 | 54 | # The version info for the project you're documenting, acts as replacement for 55 | # |version| and |release|, also used in various other places throughout the 56 | # built documents. 57 | # 58 | # The short X.Y version. 59 | version = u'' 60 | # The full version, including alpha/beta/rc tags. 61 | release = u'' 62 | 63 | # The language for content autogenerated by Sphinx. Refer to documentation 64 | # for a list of supported languages. 65 | # 66 | # This is also used if you do content translation via gettext catalogs. 67 | # Usually you set "language" from the command line for these cases. 68 | language = 'en' 69 | 70 | # List of patterns, relative to source directory, that match files and 71 | # directories to ignore when looking for source files. 72 | # This patterns also effect to html_static_path and html_extra_path 73 | exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store'] 74 | 75 | # The name of the Pygments (syntax highlighting) style to use. 76 | pygments_style = 'sphinx' 77 | 78 | # If true, `todo` and `todoList` produce output, else they produce nothing. 79 | todo_include_todos = True 80 | 81 | 82 | # -- Options for HTML output ---------------------------------------------- 83 | 84 | # The theme to use for HTML and HTML Help pages. See the documentation for 85 | # a list of builtin themes. 86 | # 87 | html_theme = 'sphinx_rtd_theme' 88 | 89 | # Theme options are theme-specific and customize the look and feel of a theme 90 | # further. For a list of options available for each theme, see the 91 | # documentation. 92 | # 93 | # html_theme_options = {} 94 | 95 | # Add any paths that contain custom static files (such as style sheets) here, 96 | # relative to this directory. They are copied after the builtin static files, 97 | # so a file named "default.css" will overwrite the builtin "default.css". 98 | html_static_path = ['_static'] 99 | 100 | 101 | # -- Options for HTMLHelp output ------------------------------------------ 102 | 103 | # Output file base name for HTML help builder. 104 | htmlhelp_basename = 'synthesizerdoc' 105 | 106 | 107 | # -- Options for LaTeX output --------------------------------------------- 108 | 109 | latex_elements = { 110 | # The paper size ('letterpaper' or 'a4paper'). 111 | # 112 | # 'papersize': 'letterpaper', 113 | 114 | # The font size ('10pt', '11pt' or '12pt'). 115 | # 116 | # 'pointsize': '10pt', 117 | 118 | # Additional stuff for the LaTeX preamble. 119 | # 120 | # 'preamble': '', 121 | 122 | # Latex figure (float) alignment 123 | # 124 | # 'figure_align': 'htbp', 125 | } 126 | 127 | # Grouping the document tree into LaTeX files. List of tuples 128 | # (source start file, target name, title, 129 | # author, documentclass [howto, manual, or own class]). 130 | latex_documents = [ 131 | (master_doc, 'synthesizer.tex', u'Synthesizer Documentation', 132 | u'Author', 'manual'), 133 | ] 134 | 135 | 136 | # -- Options for manual page output --------------------------------------- 137 | 138 | # One entry per manual page. List of tuples 139 | # (source start file, name, description, authors, manual section). 140 | man_pages = [ 141 | (master_doc, 'synthesizer', u'Synthesizer Documentation', 142 | [author], 1) 143 | ] 144 | 145 | 146 | # -- Options for Texinfo output ------------------------------------------- 147 | 148 | # Grouping the document tree into Texinfo files. List of tuples 149 | # (source start file, target name, title, author, 150 | # dir menu entry, description, category) 151 | texinfo_documents = [ 152 | (master_doc, 'synthesizer', u'Synthesizer Documentation', 153 | author, 'synthesizer', 'One line description of project.', 154 | 'Miscellaneous'), 155 | ] 156 | 157 | 158 | 159 | # -- Options for Epub output ---------------------------------------------- 160 | 161 | # Bibliographic Dublin Core info. 162 | epub_title = project 163 | epub_author = author 164 | epub_publisher = author 165 | epub_copyright = copyright 166 | 167 | # The unique identifier of the text. This can be a ISBN number 168 | # or the project homepage. 169 | # 170 | # epub_identifier = '' 171 | 172 | # A unique identification for the text. 173 | # 174 | # epub_uid = '' 175 | 176 | # A list of files that should not be packed into the epub file. 177 | epub_exclude_files = ['search.html'] 178 | -------------------------------------------------------------------------------- /docs/index.rst: -------------------------------------------------------------------------------- 1 | .. synthesizer documentation master file, created by 2 | sphinx-quickstart on Sat Dec 31 14:51:42 2016. 3 | You can adapt this file completely to your liking, but it should at least 4 | contain the root `toctree` directive. 5 | 6 | Welcome to synthesizer's documentation! 7 | ======================================= 8 | 9 | .. toctree:: 10 | :maxdepth: 4 11 | :caption: Contents: 12 | 13 | synthesizer 14 | 15 | 16 | Indices and tables 17 | ================== 18 | 19 | * :ref:`genindex` 20 | * :ref:`modindex` 21 | * :ref:`search` 22 | -------------------------------------------------------------------------------- /docs/requirements.txt: -------------------------------------------------------------------------------- 1 | enum34>=1.1.6 2 | numpy>=1.13.3 3 | scipy>=0.19.1 4 | -------------------------------------------------------------------------------- /docs/synthesizer.rst: -------------------------------------------------------------------------------- 1 | synthesizer package 2 | =================== 3 | 4 | Submodules 5 | ---------- 6 | 7 | synthesizer.player module 8 | ------------------------- 9 | 10 | .. automodule:: synthesizer.player 11 | :members: 12 | :undoc-members: 13 | :show-inheritance: 14 | 15 | synthesizer.synthesizer module 16 | ------------------------------ 17 | 18 | .. automodule:: synthesizer.synthesizer 19 | :members: 20 | :undoc-members: 21 | :show-inheritance: 22 | 23 | synthesizer.writer module 24 | ------------------------- 25 | 26 | .. automodule:: synthesizer.writer 27 | :members: 28 | :undoc-members: 29 | :show-inheritance: 30 | 31 | Module contents 32 | --------------- 33 | 34 | .. automodule:: synthesizer 35 | :members: 36 | :undoc-members: 37 | :show-inheritance: 38 | -------------------------------------------------------------------------------- /example/play_440hz.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | 4 | import time 5 | 6 | from synthesizer import Player, Synthesizer, Waveform 7 | 8 | 9 | def main(): 10 | player = Player() 11 | player.open_stream() 12 | 13 | print("play sine wave") 14 | synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False) 15 | player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0)) 16 | time.sleep(0.5) 17 | 18 | print("play square wave") 19 | synthesizer = Synthesizer(osc1_waveform=Waveform.square, osc1_volume=0.8, use_osc2=False) 20 | player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0)) 21 | time.sleep(0.5) 22 | 23 | print("play triangle wave") 24 | synthesizer = Synthesizer(osc1_waveform=Waveform.triangle, osc1_volume=0.8, use_osc2=False) 25 | player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0)) 26 | time.sleep(0.5) 27 | 28 | print("play synthesized wave 1") 29 | synthesizer = Synthesizer( 30 | osc1_waveform=Waveform.sawtooth, osc1_volume=1.0, 31 | use_osc2=True, osc2_waveform=Waveform.sawtooth, 32 | osc2_volume=0.3, osc2_freq_transpose=6.0, 33 | ) 34 | player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0)) 35 | time.sleep(0.5) 36 | 37 | print("play synthesized wave 2") 38 | synthesizer = Synthesizer( 39 | osc1_waveform=Waveform.square, osc1_volume=1.0, 40 | use_osc2=True, osc2_waveform=Waveform.sine, 41 | osc2_volume=0.3, osc2_freq_transpose=3.0, 42 | ) 43 | player.play_wave(synthesizer.generate_constant_wave(440.0, 3.0)) 44 | 45 | 46 | if __name__ == '__main__': 47 | main() 48 | -------------------------------------------------------------------------------- /example/play_chord.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | 4 | import time 5 | 6 | from synthesizer import Player, Synthesizer, Waveform 7 | 8 | 9 | def main(): 10 | player = Player() 11 | player.open_stream() 12 | 13 | print("play major chord") 14 | synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False) 15 | chord = ["C4", "E4", "G4"] 16 | player.play_wave(synthesizer.generate_chord(chord, 3.0)) 17 | time.sleep(0.5) 18 | 19 | print("play minor chord") 20 | chord = ["C4", "Eb4", "G4"] 21 | player.play_wave(synthesizer.generate_chord(chord, 3.0)) 22 | time.sleep(0.5) 23 | 24 | print("play sus4 chord") 25 | chord = ["C4", "F4", "G4"] 26 | player.play_wave(synthesizer.generate_chord(chord, 3.0)) 27 | time.sleep(0.5) 28 | 29 | print("play 7th chord") 30 | chord = ["C4", "E4", "G4", "Bb4"] 31 | player.play_wave(synthesizer.generate_chord(chord, 3.0)) 32 | time.sleep(0.5) 33 | 34 | print("play add9 chord") 35 | chord = ["C4", "E4", "G4", "D5"] 36 | player.play_wave(synthesizer.generate_chord(chord, 3.0)) 37 | time.sleep(0.5) 38 | 39 | print("play chord sequence") 40 | chord = ["D4", "F4", "A4", "C5"] 41 | player.play_wave(synthesizer.generate_chord(chord, 1.0)) 42 | chord = ["D4", "G4", "B4"] 43 | player.play_wave(synthesizer.generate_chord(chord, 1.0)) 44 | chord = ["E4", "G4", "C5"] 45 | player.play_wave(synthesizer.generate_chord(chord, 1.0)) 46 | 47 | 48 | if __name__ == '__main__': 49 | main() 50 | -------------------------------------------------------------------------------- /example/play_pychord.py: -------------------------------------------------------------------------------- 1 | # In this demo, the chords passed as arguments will be played. 2 | 3 | import argparse 4 | 5 | from pychord import ChordProgression 6 | 7 | from synthesizer import Player, Synthesizer, Waveform 8 | 9 | 10 | def parse_args(): 11 | parser = argparse.ArgumentParser() 12 | parser.add_argument("chord", nargs="+", help="The chord to be played") 13 | return parser.parse_args() 14 | 15 | 16 | def main(): 17 | args = parse_args() 18 | chords = ChordProgression(args.chord) 19 | 20 | player = Player() 21 | player.open_stream() 22 | synthesizer = Synthesizer(osc1_waveform=Waveform.triangle, osc1_volume=1.0, use_osc2=False) 23 | 24 | for chord in chords: 25 | notes = chord.components_with_pitch(root_pitch=3) 26 | print("Play {}".format(chord)) 27 | player.play_wave(synthesizer.generate_chord(notes, 1.0)) 28 | 29 | 30 | if __name__ == '__main__': 31 | main() 32 | -------------------------------------------------------------------------------- /example/write_wave.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # -*- coding: utf-8 -*- 3 | 4 | import os 5 | 6 | from synthesizer import Synthesizer, Waveform, Writer 7 | 8 | 9 | BASE = 261.626 # C4 10 | DIR = os.path.dirname(os.path.abspath(__file__)) 11 | 12 | 13 | def main(): 14 | writer = Writer() 15 | 16 | print("write chord sequence") 17 | synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False) 18 | chord = [BASE * 2.0 ** (2 / 12.0), BASE * 2.0 ** (5 / 12.0), BASE * 2.0 ** (9 / 12.0), BASE * 2.0 ** (12 / 12.0)] 19 | wave1 = synthesizer.generate_chord(chord, 1.0) 20 | chord = [BASE * 2.0 ** (2 / 12.0), BASE * 2.0 ** (7 / 12.0), BASE * 2.0 ** (11 / 12.0)] 21 | wave2 = synthesizer.generate_chord(chord, 1.0) 22 | chord = [BASE, BASE * 2.0 ** (4 / 12.0), BASE * 2.0 ** (7 / 12.0), BASE * 2.0 ** (12 / 12.0)] 23 | wave3 = synthesizer.generate_chord(chord, 1.0) 24 | 25 | writer.write_waves(os.path.join(DIR, "test.wav"), wave1, wave2, wave3) 26 | 27 | 28 | if __name__ == '__main__': 29 | main() 30 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | enum34>=1.1.6 2 | numpy>=1.13.3 3 | PyAudio>=0.2.11 4 | scipy>=0.19.1 5 | -------------------------------------------------------------------------------- /setup.cfg: -------------------------------------------------------------------------------- 1 | [bdist_wheel] 2 | universal=1 3 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | from setuptools import setup, find_packages 2 | version = '0.2.0' 3 | 4 | setup( 5 | name='synthesizer', 6 | version=version, 7 | description="A simple virtual analog synthesizer.", 8 | classifiers=[ 9 | "Development Status :: 4 - Beta", 10 | "License :: OSI Approved :: GNU General Public License v3 (GPLv3)", 11 | "Operating System :: MacOS :: MacOS X", 12 | "Operating System :: POSIX :: Linux", 13 | "Topic :: Multimedia :: Sound/Audio :: Sound Synthesis", 14 | ], 15 | keywords='analog synthesizer', 16 | author='Yuma Mihira', 17 | author_email='info@yurax2.com', 18 | url='https://github.com/yuma-m/synthesizer', 19 | license='GPLv3', 20 | packages=find_packages(exclude=['test']), 21 | include_package_data=True, 22 | zip_safe=True, 23 | long_description=open('README.md').read(), 24 | long_description_content_type='text/markdown', 25 | test_suite='nose.collector', 26 | install_requires=[ 27 | 'enum34>=1.1.6', 28 | "numpy>=1.13.3", 29 | # TODO: commented out to build document on ReadTheDocs 30 | # 'PyAudio>=0.2.11', 31 | 'scipy>=0.19.1', 32 | ], 33 | ) 34 | -------------------------------------------------------------------------------- /synthesizer/__init__.py: -------------------------------------------------------------------------------- 1 | from .player import Player 2 | from .synthesizer import Oscillator, Synthesizer, Waveform 3 | from .writer import Writer 4 | -------------------------------------------------------------------------------- /synthesizer/frequency.py: -------------------------------------------------------------------------------- 1 | A1_FREQ = 55.0 2 | 3 | BASE_FREQUENCY = { 4 | "C": A1_FREQ * 2 ** (-9 / 12.0), 5 | "C#": A1_FREQ * 2 ** (-8 / 12.0), 6 | "Db": A1_FREQ * 2 ** (-8 / 12.0), 7 | "D": A1_FREQ * 2 ** (-7 / 12.0), 8 | "D#": A1_FREQ * 2 ** (-6 / 12.0), 9 | "Eb": A1_FREQ * 2 ** (-6 / 12.0), 10 | "E": A1_FREQ * 2 ** (-5 / 12.0), 11 | "F": A1_FREQ * 2 ** (-4 / 12.0), 12 | "F#": A1_FREQ * 2 ** (-3 / 12.0), 13 | "Gb": A1_FREQ * 2 ** (-3 / 12.0), 14 | "G": A1_FREQ * 2 ** (-2 / 12.0), 15 | "G#": A1_FREQ * 2 ** (-1 / 12.0), 16 | "Ab": A1_FREQ * 2 ** (-1 / 12.0), 17 | "A": A1_FREQ, 18 | "A#": A1_FREQ * 2 ** (1 / 12.0), 19 | "Bb": A1_FREQ * 2 ** (1 / 12.0), 20 | "B": A1_FREQ * 2 ** (2 / 12.0), 21 | } 22 | 23 | 24 | def frequency_from_scale(scale): 25 | """ Calculate frequency from pitch 26 | 27 | :param str scale: e.g. C4, Ab3, D#5 28 | :rtype: float 29 | :return: Frequency of pitch 30 | """ 31 | base, octave = scale[:-1], scale[-1] 32 | octave = int(octave) 33 | if base not in BASE_FREQUENCY: 34 | return ValueError("Unknown note: {}".format(base)) 35 | return BASE_FREQUENCY[base] * 2 ** (octave - 1) 36 | -------------------------------------------------------------------------------- /synthesizer/player.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | import numpy as np 4 | 5 | 6 | class Player(object): 7 | 8 | def __init__(self, rate=44100): 9 | try: 10 | import pyaudio 11 | self._pyaudio = pyaudio.PyAudio() 12 | self._format = pyaudio.paInt16 13 | except ImportError: 14 | self._pyaudio = None 15 | self._stream = None 16 | # TODO: support stereo channels 17 | self._channels = 1 18 | self._rate = rate 19 | 20 | def enumerate_device(self): 21 | if not self._pyaudio: 22 | raise ImportError("Failed to import pyaudio, please install pyaudio") 23 | for n in range(self._pyaudio.get_device_count()): 24 | device = self._pyaudio.get_device_info_by_index(n) 25 | print('index: {index:02d}, name: "{name}", rate: {rate:5d}'.format( 26 | index=n, name=device["name"], rate=int(device["defaultSampleRate"]))) 27 | 28 | def open_stream(self, device_name=None, device_index=-1): 29 | u""" open audio output stream 30 | 31 | if neither device_name nor device_index is specified, 32 | default output device will be opened. 33 | 34 | :param str device_name: part of device name (ex: hw:0,0) 35 | :param int device_index: index of device 36 | """ 37 | if not self._pyaudio: 38 | raise ImportError("Failed to import pyaudio, please install pyaudio") 39 | if device_name: 40 | for n in range(self._pyaudio.get_device_count()): 41 | dev = self._pyaudio.get_device_info_by_index(n) 42 | if dev["name"].find(device_name) >= 0: 43 | device = dev 44 | break 45 | else: 46 | raise RuntimeError("audio device {} not found".format(device_name)) 47 | elif device_index >= 0: 48 | device = self._pyaudio.get_device_info_by_index(device_index) 49 | else: 50 | device = self._pyaudio.get_default_output_device_info() 51 | 52 | self._stream = self._pyaudio.open( 53 | channels=self._channels, 54 | format=self._format, 55 | rate=self._rate, 56 | output_device_index=device["index"], 57 | output=True, 58 | ) 59 | 60 | def play_wave(self, wave): 61 | u""" play normalized wave 62 | 63 | :param numpy.array wave: normalized wave 64 | """ 65 | if not self._stream: 66 | raise RuntimeError("audio stream is not opened, please call open_stream() first.") 67 | wave = (wave * float(2 ** 15 - 1)).astype(np.int16).tobytes() 68 | self._stream.write(wave) 69 | -------------------------------------------------------------------------------- /synthesizer/synthesizer.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | import numpy as np 4 | import scipy.signal 5 | from enum import Enum 6 | 7 | from .frequency import frequency_from_scale 8 | 9 | 10 | class Waveform(Enum): 11 | sine = "sine" 12 | sawtooth = "sawtooth" 13 | square = "square" 14 | triangle = "triangle" 15 | 16 | 17 | class Oscillator(object): 18 | u""" Virtual oscillator object 19 | 20 | :param Waveform _waveform: waveform of oscillator 21 | :param float _volume: amplitude of generated wave (0.1 - 1.0) 22 | :param float _freq_transpose: transpose of frequency (for sub oscillator) 23 | """ 24 | 25 | def __init__(self, waveform, volume, freq_transpose=1.0): 26 | self._waveform = waveform 27 | self._volume = max(0.0, min(1.0, volume)) 28 | self._freq_transpose = freq_transpose 29 | 30 | @property 31 | def volume(self): 32 | return self._volume 33 | 34 | @property 35 | def _wave_func(self): 36 | if self._waveform is Waveform.sine: 37 | return np.sin 38 | elif self._waveform is Waveform.sawtooth: 39 | return scipy.signal.sawtooth 40 | elif self._waveform is Waveform.square: 41 | return scipy.signal.square 42 | elif self._waveform is Waveform.triangle: 43 | return self.gen_triang 44 | raise TypeError("unknown waveform: {}".format(self._waveform)) 45 | 46 | def generate_wave(self, phases): 47 | phases = np.copy(phases) * self._freq_transpose 48 | return self._volume * self._wave_func(phases) 49 | 50 | @staticmethod 51 | def gen_triang(t, width=0.5): 52 | return scipy.signal.sawtooth(t, width) 53 | 54 | 55 | class Synthesizer(object): 56 | u""" Virtual analog synthesizer object 57 | 58 | :param Oscillator _osc1: main virtual oscillator 59 | :param (Oscillator|None) _osc2: sub virtual oscillator 60 | """ 61 | 62 | def __init__(self, osc1_waveform=Waveform.sine, osc1_volume=1.0, 63 | use_osc2=False, osc2_waveform=Waveform.sine, 64 | osc2_volume=0.3, osc2_freq_transpose=2.0, 65 | rate=44100): 66 | u""" Constructor of Synthesizer 67 | 68 | :param Waveform osc1_waveform: waveform for oscillator 1 69 | :param float osc1_volume: relative volume of oscillator 1 70 | :param bool use_osc2: if True wave from osc2 is added to wave from osc1 71 | :param Waveform osc2_waveform: waveform for oscillator 2 72 | :param float osc2_volume: relative volume of oscillator 2 73 | :param float osc2_freq_transpose: frequency transpose for oscillator 2 74 | :param int rate: sampling ratio 75 | """ 76 | self._osc1 = Oscillator(waveform=osc1_waveform, volume=osc1_volume) 77 | self._use_osc2 = use_osc2 78 | if self._use_osc2: 79 | self._osc2 = Oscillator(waveform=osc2_waveform, volume=osc2_volume, freq_transpose=osc2_freq_transpose) 80 | else: 81 | self._osc2 = None 82 | self._rate = rate 83 | 84 | def _generate_wave(self, phases): 85 | wave = self._osc1.generate_wave(phases) 86 | if self._use_osc2: 87 | wave += self._osc2.generate_wave(phases) 88 | wave *= (1.0 / (self._osc1.volume + self._osc2.volume)) 89 | return wave 90 | 91 | def generate_constant_wave(self, frequency, length): 92 | u""" generate wave with constant frequency 93 | 94 | :param (float|str) frequency: frequency or scale of wave 95 | :param float length: length of wave (seconds) 96 | :rtype: numpy.array 97 | :return: normalized wave 98 | """ 99 | if isinstance(frequency, str): 100 | frequency = frequency_from_scale(frequency) 101 | phases = np.cumsum(2.0 * np.pi * frequency / self._rate * np.ones(int(self._rate * float(length)))) 102 | return self._generate_wave(phases) 103 | 104 | def generate_chord(self, freqs, length): 105 | u""" generate wave consists of multiple frequencies 106 | 107 | :param list[float] freqs: list of frequencies or scales 108 | :param length: legnth of wave (seconds) 109 | :rtype: numpy.array 110 | :return: normalized wave 111 | """ 112 | if not freqs or not isinstance(freqs, list): 113 | raise ValueError("freqs must be a list of float") 114 | wave = self.generate_constant_wave(freqs[0], length) 115 | for freq in freqs[1:]: 116 | wave += self.generate_constant_wave(freq, length) 117 | wave /= float(len(freqs)) 118 | return wave 119 | -------------------------------------------------------------------------------- /synthesizer/writer.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | import numpy as np 4 | from scipy.io import wavfile 5 | 6 | 7 | class Writer(object): 8 | 9 | def __init__(self, rate=44100): 10 | self._rate = rate 11 | 12 | def write_wave(self, file_path, wave): 13 | u""" write wave to a wav file 14 | 15 | :param str file_path: relative / absolute path of wave file 16 | :param numpy.array wave: normalized wave 17 | """ 18 | wave = (wave * float(2 ** 15 - 1)).astype(np.int16) 19 | wavfile.write(file_path, self._rate, wave) 20 | 21 | def write_waves(self, file_path, *waves): 22 | u""" write waves to a wav file 23 | 24 | :param str file_path: relative / absolute path of wave file 25 | :param list[numpy.array] waves: list of normalized waves 26 | """ 27 | self.write_wave(file_path, np.concatenate(waves)) 28 | -------------------------------------------------------------------------------- /test/__init__.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/yuma-m/synthesizer/4357b5664173cedbd0f13188a16bee588771e5fa/test/__init__.py -------------------------------------------------------------------------------- /test/test_frequency.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | from nose.tools import assert_almost_equal 4 | from parameterized import parameterized 5 | 6 | from synthesizer.frequency import frequency_from_scale 7 | 8 | 9 | @parameterized([ 10 | ("A0", 27.5), 11 | ("A#0", 29.135), 12 | ("Bb0", 29.135), 13 | ("B0", 30.868), 14 | ("C1", 32.703), 15 | ("C#1", 34.648), 16 | ("Db1", 34.648), 17 | ("D1", 36.708), 18 | ("D#1", 38.891), 19 | ("Eb1", 38.891), 20 | ("E1", 41.203), 21 | ("F1", 43.654), 22 | ("F#1", 46.249), 23 | ("Gb1", 46.249), 24 | ("G1", 48.999), 25 | ("G#1", 51.913), 26 | ("Ab1", 51.913), 27 | ("A1", 55), 28 | ("C3", 130.813), 29 | ("A4", 440), 30 | ("E5", 659.255), 31 | ]) 32 | def test_frequency_from_scale(scale, frequency): 33 | assert_almost_equal(frequency_from_scale(scale), frequency, places=3) 34 | -------------------------------------------------------------------------------- /test/test_player.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | from nose.tools import ok_, nottest 4 | 5 | from synthesizer import Player 6 | 7 | 8 | def test_enumerate_device(): 9 | player = Player() 10 | player.enumerate_device() 11 | ok_("enumerate_device() succeeded.") 12 | 13 | 14 | @nottest 15 | def test_open_default_stream(): 16 | player = Player() 17 | player.open_stream() 18 | ok_("open_stream() succeeded.") 19 | -------------------------------------------------------------------------------- /test/test_synthesizer.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | from synthesizer import Synthesizer, Waveform 4 | from nose.tools import eq_, assert_almost_equal 5 | 6 | RATE = 16000 7 | 8 | 9 | def test_sine_wave(): 10 | synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False, rate=RATE) 11 | wave = synthesizer.generate_constant_wave(440.0, 1.0) 12 | eq_(wave.size, RATE) 13 | assert_almost_equal(wave.max(), 1.0, places=3) 14 | assert_almost_equal(wave.min(), -1.0, places=3) 15 | assert_almost_equal(wave.mean(), 0.0, places=3) 16 | 17 | 18 | def test_sawtooth_wave(): 19 | synthesizer = Synthesizer(osc1_waveform=Waveform.sawtooth, osc1_volume=1.0, use_osc2=False, rate=RATE) 20 | wave = synthesizer.generate_constant_wave(440.0, 1.0) 21 | eq_(wave.size, RATE) 22 | assert_almost_equal(wave.max(), 1.0, places=3) 23 | assert_almost_equal(wave.min(), -1.0, places=3) 24 | assert_almost_equal(wave.mean(), 0.0, places=3) 25 | 26 | 27 | def test_square_wave(): 28 | synthesizer = Synthesizer(osc1_waveform=Waveform.square, osc1_volume=1.0, use_osc2=False, rate=RATE) 29 | wave = synthesizer.generate_constant_wave(440.0, 1.0) 30 | eq_(wave.size, RATE) 31 | assert_almost_equal(wave.max(), 1.0, places=3) 32 | assert_almost_equal(wave.min(), -1.0, places=3) 33 | assert_almost_equal(wave.mean(), 0.0, places=3) 34 | 35 | 36 | def test_triangle_wave(): 37 | synthesizer = Synthesizer(osc1_waveform=Waveform.triangle, osc1_volume=1.0, use_osc2=False, rate=RATE) 38 | wave = synthesizer.generate_constant_wave(440.0, 1.0) 39 | eq_(wave.size, RATE) 40 | assert_almost_equal(wave.max(), 1.0, places=3) 41 | assert_almost_equal(wave.min(), -1.0, places=3) 42 | assert_almost_equal(wave.mean(), 0.0, places=3) 43 | -------------------------------------------------------------------------------- /test/test_writer.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | 3 | import os 4 | 5 | from nose.tools import ok_ 6 | 7 | from synthesizer import Synthesizer, Waveform, Writer 8 | 9 | 10 | def teardown_write_wave(): 11 | os.remove("./test_wave.wav") 12 | 13 | 14 | def test_write_wave(): 15 | writer = Writer() 16 | 17 | synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False) 18 | wave = synthesizer.generate_constant_wave(440.0, 3.0) 19 | 20 | writer.write_wave("./test_wave.wav", wave) 21 | ok_("write_wave() succeeded.") 22 | 23 | 24 | test_write_wave.teardown = teardown_write_wave 25 | 26 | 27 | def teardown_write_waves(): 28 | os.remove("./test_waves.wav") 29 | 30 | 31 | def test_write_waves(): 32 | writer = Writer() 33 | 34 | synthesizer = Synthesizer(osc1_waveform=Waveform.sine, osc1_volume=1.0, use_osc2=False) 35 | wave1 = synthesizer.generate_constant_wave(220.0, 3.0) 36 | wave2 = synthesizer.generate_constant_wave(440.0, 3.0) 37 | 38 | writer.write_waves("./test_waves.wav", wave1, wave2) 39 | ok_("write_waves() succeeded.") 40 | 41 | 42 | test_write_waves.teardown = teardown_write_waves 43 | --------------------------------------------------------------------------------