audio-decode

Convert mp3/wav audio data to AudioBuffer.

const decode = require('audio-decode');
const buffer = require('audio-lena/mp3');

//as a callback
decode(buffer, (err, audioBuffer) => {});

//as a promise
decode(buffer).then(audioBuffer => {}, err => {});

API

let promise = decode(source, {context}?, (err, audioBuffer)=>{}?)

Decode source, based on options and fire callback when done, or resolve a promise if no callback passed. Source type can be: ArrayBuffer, ArrayBufferView, Buffer, Blob, File or data-uri string.

options may include context property for web-audio-api context (browser-only). By default new audio-context is created.

Supported formats

Browser version uses decodeAudioData method, in node the aurora is used.

Shipped by default:

• wav via wav-decoder
• mp3 via aurora mp3

To enable additional format, install it as a dependency npm install --save flac.js and require once require('flac.js').

Additional formats available:

• flac via flac.js
• alac via alac.js
• aac via aac.js
• ogg/vorbis via vorbis.js
• opus via opus.js

// Decode flac
let decode = require('audio-decode')
let flac = require('audio-lena/flac')
require('flac.js')

decode(flac).then(audioBuffer => {
    //buffer is ready here
})

Credits

• @mohayonao for wav-decoder.
• @devongovett and @jensnockert for aurora.js.
• @jamen as originator of this package.

Related

• context.decodeAudioData web-audio-api

License

MIT © audiojs.