webaudiofont

Use full GM set of musical instruments to play MIDI and single sounds or effects. Support for reverberation and equaliser. No plugins, no Flash. Pure HTML5 implementation compatible with desktop and mobile browser. See live examples.

View the Project on GitHub surikov/webaudiofont

WebAudioFont

WebAudioFont is a set of resources and associated technology that uses sample-based synthesis to play musical instruments in the browser. You can choose from thousands of instrument, see Catalog.

License

see LICENSE.md. Contact me if you need different license.

Help

Hire me if you need advanced help (sss1024@gmail.com) - https://www.linkedin.com/in/sergeysurikov/

Docs

API Wiki

Bug Reports

Issues

Code examples

Example applications

Pianoroll editor

Launch Web version

Install Android version

Screenplay

Fretboard for chords

Launch

Screenshot

Auto accompaniment

https://github.com/surikov/rockdice

Screenplay

3D music sequencer

Launch

Screenplay

BandLab clone for children

Screenplay

Use cases

Content

How to use

Add a link to WebAudioFontPlayer.js and the instrument file. Invoke queueWaveTable.

Hello, world

Minimal HTML page

<html>
	<head>
		<script src='https://surikov.github.io/webaudiofont/npm/dist/WebAudioFontPlayer.js'></script>
		<script src='https://surikov.github.io/webaudiofontdata/sound/0250_SoundBlasterOld_sf2.js'></script>
		<script>
			var AudioContextFunc = window.AudioContext || window.webkitAudioContext;
			var audioContext = new AudioContextFunc();
			var player=new WebAudioFontPlayer();
			player.loader.decodeAfterLoading(audioContext, '_tone_0250_SoundBlasterOld_sf2');
			function play(){
				player.queueWaveTable(audioContext, audioContext.destination
					, _tone_0250_SoundBlasterOld_sf2, 0, 12*4+7, 2);
				return false;
			}
		</script>
	</head>
	<body>
		<p><a href='javascript:play();'>Hello, world!</a></p>
	</body>
</html>

See live example.

Use queueWaveTable to play single note. Use queueChord, queueSnap, queueStrumDown, queueStrumUp to play chords. See live example for strumming.

Use time for notes to define sequence. See live example of sequencer.

Dynamic loading

Use the startLoad and waitLoad functions.

var instr=null;
var AudioContextFunc = window.AudioContext || window.webkitAudioContext;
var audioContext = new AudioContextFunc();
var player=new WebAudioFontPlayer();
function changeInstrument(path,name){
	player.loader.startLoad(audioContext, path, name);
	player.loader.waitLoad(function () {
		instr=window[name];
	});
}
changeInstrument('https://surikov.github.io/webaudiofontdata/sound/0290_Aspirin_sf2_file.js','_tone_0290_Aspirin_sf2_file');

All loaded instruments are cached in memory.

See live example

Effects and mixer

Use WebAudioFontChannel to create a chain of 10-band equalizers. Use WebAudioFontReverberator to add echo.

See live example

Custom samples

See tutorial

Installation

WebAudioFont doesn’t require installation. It hosts all code and instruments at GitHub Pages.

Minimal NPM code (if you need this)

JavaScript

var webaudiofont = require('webaudiofont');
var player = new WebAudioFontPlayer();

package.json

...
"devDependencies": {
	"webaudiofont":"^2.5.0"
...

Parts of WebAudioFont

WebAudioFont uses Web Audio API to play instruments. Synthesizer uses wavetables to play sound. Instruments came from free soundfonts:

How to use catalog of sounds:

Use drumInfo and instrumentInfo in realtime. See live example.

Player

WebAudioFontPlayer has the function queueWaveTable(audioContext, target, preset, when, pitch, duration, volume, slides)

Parameters:

The function queueWaveTable returns an envelope object. You can use this object to cancel a sound or to access AudioBufferSourceNode.

Strumming

Use queueChord, queueStrumUp, queueStrumDown, queueSnap for chords. See live example.

How to get help

Feel free to ask for any kind of help at project issues.

ReactJS

See ReactJS implementation.

Catalog of instruments

The catalog consists of a full set of MIDI standards. Each instrument has 5-10 sound variations from different soundfonts.