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Making life easy to create a MIDI-app on the web. Includes a library to program synesthesia into your app for memory recognition or for creating trippy effects. Convert soundfonts for Guitar, Bass, Drums, ect. into code that can be read by the browser. Supports multiple simultaneous instruments and perfect timing.
Filed under audioShow AllCode examples - from the repo
- Basic - the most basic implementation.
- MIDIPlayer - how to parse MIDI files, and interact with the data stream.
- WhitneyMusicBox - a audio/visual experiment by Jim Bumgardner
Demos
- 3D Piano Player w/ Three.js by Borja Morales @reality3d
- Brite Lite by Daniel Christopher @uxmonk
- Color Piano by Michael Deal @mudcube
- Euphony 3D Piano by Xueqiao Xu @qiao
- Gbloink! by Phil Jones
- Piano Typewriter by Andrew Levine
- Ragamroll by Mani Balasubramanian
- Simon Says by Daniel Christopher @uxmonk
- Spiral Keyboard by Patrick Snels
- VexFlow by Mohit Muthanna @11111110b
Related repositories
- MIDI Pictures: Pictures of the 128 standard instruments on MIDI piano keyboards
- MIDI Soundfonts: Pre-rendered General MIDI soundfonts that can be used immediately with MIDI.js
Generating Base64 Soundfonts
There is two generators for MIDI.js soundfonts:
- NodeJS package for creating soundfonts from WAV files - by Patrick Wolleb
- Ruby package for creating soundsfonts from SF2 files - by Mohit Muthanna
To dive in quickly Benjamin Gleitzman has created a package of pre-rendered sound fonts.
API
MIDI.loadPlugin.js - Decides which framework is best to use
// interface to download soundfont, then execute callback; MIDI.loadPlugin(onsuccess); // simple example to get started; MIDI.loadPlugin({ instrument: "acoustic_grand_piano", // or the instrument code 1 (aka the default) instruments: [ "acoustic_grand_piano", "acoustic_guitar_nylon" ], // or multiple instruments onsuccess: function() { } });
MIDI.Plugin.js - Controls MIDI output
MIDI.noteOn(channel, note, velocity, delay); MIDI.noteOff(channel, note, delay); MIDI.chordOn(channel, [note, note, note], velocity, delay); MIDI.chordOff(channel, [note, note, note], delay); MIDI.keyToNote = object; // A0 => 21 MIDI.noteToKey = object; // 21 => A0
MIDI.Player.js - Plays MIDI stream
MIDI.Player.currentTime = integer; // time we are at now within the song. MIDI.Player.endTime = integer; // time when song ends. MIDI.Player.playing = boolean; // are we playing? yes or no. MIDI.Player.loadFile(file, onsuccess); // load .MIDI from base64 or binary XML request. MIDI.Player.start(); // start the MIDI track (you can put this in the loadFile callback) MIDI.Player.resume(); // resume the MIDI track from pause. MIDI.Player.pause(); // pause the MIDI track. MIDI.Player.stop(); // stops all audio being played, and resets currentTime to 0.
Listener for when notes are played
MIDI.Player.removeListener(); // removes current listener. MIDI.Player.addListener(function(data) { // set it to your own function! var now = data.now; // where we are now var end = data.end; // time when song ends var channel = data.channel; // channel note is playing on var message = data.message; // 128 is noteOff, 144 is noteOn var note = data.note; // the note var velocity = data.velocity; // the velocity of the note // then do whatever you want with the information! });
Smooth animation interpolating between onMidiEvent calls
MIDI.Player.clearAnimation(); // clears current animation. MIDI.Player.setAnimation(function(data) { var now = data.now; // where we are now var end = data.end; // time when song ends var events = data.events; // all the notes currently being processed // then do what you want with the information! });
Effects available for WebAudioContext via Tuna.js
MIDI.setEffects([ { type: "MoogFilter", bufferSize: 4096, bypass: false, cutoff: 0.065, resonance: 3.5 }, { type: "Bitcrusher", bits: 4, bufferSize: 4096, bypass: false, normfreq: 0.1 }, { type: "Phaser", rate: 1.2, // 0.01 to 8 is a decent range, but higher values are possible depth: 0.3, // 0 to 1 feedback: 0.2, // 0 to 1+ stereoPhase: 30, // 0 to 180 baseModulationFrequency: 700, // 500 to 1500 bypass: 0 }, { type: "Chorus", rate: 1.5, feedback: 0.2, delay: 0.0045, bypass: 0 }, { type: "Delay", feedback: 0.45, // 0 to 1+ delayTime: 150, // how many milliseconds should the wet signal be delayed? wetLevel: 0.25, // 0 to 1+ dryLevel: 1, // 0 to 1+ cutoff: 20, // cutoff frequency of the built in highpass-filter. 20 to 22050 bypass: 0 }, { type: "Overdrive", outputGain: 0.5, // 0 to 1+ drive: 0.7, // 0 to 1 curveAmount: 1, // 0 to 1 algorithmIndex: 0, // 0 to 5, selects one of our drive algorithms bypass: 0 }, { type: "Compressor", threshold: 0.5, // -100 to 0 makeupGain: 1, // 0 and up attack: 1, // 0 to 1000 release: 0, // 0 to 3000 ratio: 4, // 1 to 20 knee: 5, // 0 to 40 automakeup: true, // true/false bypass: 0 }, { type: "Convolver", highCut: 22050, // 20 to 22050 lowCut: 20, // 20 to 22050 dryLevel: 1, // 0 to 1+ wetLevel: 1, // 0 to 1+ level: 1, // 0 to 1+, adjusts total output of both wet and dry impulse: "./inc/tuna/impulses/impulse_rev.wav", // the path to your impulse response bypass: 0 }, { type: "Filter", frequency: 20, // 20 to 22050 Q: 1, // 0.001 to 100 gain: 0, // -40 to 40 bypass: 1, // 0 to 1+ filterType: 0 // 0 to 7, corresponds to the filter types in the native filter node: lowpass, highpass, bandpass, lowshelf, highshelf, peaking, notch, allpass in that order }, { type: "Cabinet", makeupGain: 1, // 0 to 20 impulsePath: "./inc/tuna/impulses/impulse_guitar.wav", // path to your speaker impulse bypass: 0 }, { type: "Tremolo", intensity: 0.3, // 0 to 1 rate: 0.1, // 0.001 to 8 stereoPhase: 0, // 0 to 180 bypass: 0 }, { type: "WahWah", automode: true, // true/false baseFrequency: 0.5, // 0 to 1 excursionOctaves: 2, // 1 to 6 sweep: 0.2, // 0 to 1 resonance: 10, // 1 to 100 sensitivity: 0.5, // -1 to 1 bypass: 0 } ]);
Libraries
- colorspace.js: Color conversions, music isn’t complete without!
Color.Space(0xff0000, "HEX>RGB>HSL");
- dom_request_script.js: Loads scripts in synchronously, or asynchronously.
DOMLoader.script.add(src, onsuccess);
- dom_request_xhr.js: Cross-browser XMLHttpd request.
DOMLoader.sendRequest(src, onsuccess);
- synesthesia.js: Note-to-color mappings (from Isaac Newton onwards).
Many thanks to the authors of these libraries
- Web MIDI API: W3C proposal by Jussi Kalliokoski & Chris Wilson
- Web Audio API: W3C proposal by Chris Rogers
- <audio>: HTML5 specs
- Flash package: SoundManager2 by Scott Schiller
- jasmid: Reads MIDI file byte-code, and translats into a Javascript array.
- base642binary.js: Cleans up XML base64-requests for Web Audio API.
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