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audio-loader
Advanced tools
Readme
An simple and flexible audio buffer loader for browser and node:
var load = require('audio-loader')
// load one file
load('http://example.net/audio/file.mp3').then(function (buffer) {
console.log(buffer) // => <AudioBuffer>
})
// load a collection of files
load({ snare: 'samples/snare.wav', kick: 'samples/kick.wav' },
{ from: 'http://example.net/'} ).then(function (audio) {
console.log(audio) // => { snare: <AudioBuffer>, kick: <AudioBuffer> }
})
Npm
Via npm: npm i --save audio-loader
Browser
Download the minified distribution (4kb) which exports loadAudio
as window global:
<script src="audio-loader.min.js"></script>
<script>
loadAudio('file.wav').then(..)
</script>
You can load individual or collection of files:
load('http://path/to/file.mp3').then(function (buffer) {
// buffer is an AudioBuffer
play(buffer)
})
// apply a prefix using options.from
load(['snare.mp3', 'kick.mp3'], { from: 'http://server.com/audio/' }).then(function (buffers) {
// buffers is an array of AudioBuffers
play(buffers[0])
})
// the options.from can be a function
function toUrl (name) { return 'http://server.com/samples' + name + '?key=secret' }
load({ snare: 'snare.mp3', kick: 'kick.mp3' }, { from: toUrl }).then(function (buffers) {
// buffers is a hash of names to AudioBuffers
play(buffers['snare'])
})
audio-loader
will detect if some of the values of an object is an audio file name and try to fetch it:
var inst = { name: 'piano', gain: 0.2, audio: 'samples/piano.mp3' }
load(inst).then(function (piano) {
console.log(piano.name) // => 'piano' (it's not an audio file)
console.log(piano.gain) // => 0.2 (it's not an audio file)
console.log(piano.audio) // => <AudioBuffer> (it loaded the file)
})
If you provide a .js
file, audio-loader
will interpret it as a midi.js soundfont file and try to load it:
load('acoustic_grand_piano-ogg.js').then(function (buffers) {
buffers['C2'] // => <AudioBuffer>
})
This is a repository of them: https://github.com/gleitz/midi-js-soundfonts
load(source, [options])
Param | Type | Description |
---|---|---|
source | Object | the object to be loaded: can be an URL string, ArrayBuffer with encoded data or an array/map of sources |
options | Object | (Optional) the load options for that source |
Possible options
keys are:
load('snare.mp3', { from: 'http://audio.net/samples/' })
If it's a function it receives the file name and should return the url as string.load('piano.json', { only: ['C2', 'D2'] })
audio-context
To run the test, clone this repo and:
npm install
npm test
To run the browser example:
npm i -g budo
npm run example-browser
To run the node (audiojs) example:
node example/node.js
MIT License
FAQs
A flexible web audio sample loader for browser and node
The npm package audio-loader receives a total of 654 weekly downloads. As such, audio-loader popularity was classified as not popular.
We found that audio-loader demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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