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UNMAINTAINED. A MIDI file reader and synthesiser in Javascript
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gasman/jasmid
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THIS PROJECT IS NO LONGER MAINTAINED. http://unmaintained.tech/ =============================================================== see jasmid.ts fork: https://github.com/pravdomil/jasmid.ts jasmid - A Javascript MIDI file reader and synthesiser Originally presented at BarCamp London 8, 13-14 November 2010 Instructions: Open index.html in browser. Turn up volume. Click on link. Sound output is via one of the following mechanisms, according to what your browser supports: * Mozilla Audio Data API <https://wiki.mozilla.org/Audio_Data_API> * Web Audio API <https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html> * a Flash fallback originally taken from dynamicaudio.js by Ben Firshman <https://github.com/bfirsh/dynamicaudio.js> and hacked around by me. The code: stream.js - helper library for reading a string as a stream of typed data midifile.js - parses the MIDI file format into a header and a list of tracks, each consisting of a list of event objects replayer.js - steps over the data structure generated by midifile.js and calls the appropriate operations on the synthesiser synth.js - audio synthesiser; generates waveforms according to tweakable parameters audio.js - passes the generated waveform to either the Audio Data API or the Flash fallback widget (da.swf) Limitations: * The only event types supported by replayer.js are note on, note off, tempo change and program change * There are currently only two instrument presets defined in synth.js - one for strings and a 'piano' one for everything else - and neither of them are particularly good (just a single volume-modulated sine wave). Matt Westcott <matt@west.co.tt> - @gasmanic - http://matt.west.co.tt/
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