Package Exports

wav-decoder

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Readme

wav-decoder

isomorphic wav data decoder

Installation

npm:

npm install wav-decoder

bower:

bower install wav-decoder

downloads:

API

WavDecoder

constructor()

Class methods

decode(src: ArrayBuffer|Buffer): Promise<AudioData>

Instance methods

decode(src: ArrayBuffer|Buffer): Promise<AudioData>

Returns

AudioData is defined below.

interface AudioData {
  sampleRate: number;
  channelData: Float32Array[];
}

Usage

node.js

var fs = require("fs");
var WavDecoder = require("wav-decoder");

var readFile = function(filepath) {
  return new Promise(function(resolve, reject) {
    fs.readFile(filepath, function(err, buffer) {
      if (err) {
        return reject(err);
      }
      return resolve(buffer);
    });
  });
};

readFile("foobar.wav").then(function(buffer) {
  return WavDecoder.decode(buffer); // buffer is an instance of Buffer
}).then(function(audioData) {
  console.log(audioData.sampleRate);
  console.log(audioData.channelData[0]); // Float32Array
  console.log(audioData.channelData[1]); // Float32Array
});

browser

<script src="/path/to/wav-decoder.js"></script>

fetch("foobar.wav").then(function(res) {
  return res.arraybuffer();
}).then(function(buffer) {
  return WavDecoder.decode(buffer); // buffer is an instance of ArrayBuffer
}).then(function(audioData) {
  console.log(audioData.sampleRate);
  console.log(audioData.channelData[0]); // Float32Array
  console.log(audioData.channelData[1]); // Float32Array
});

License

MIT