https://github.com/mohayonao/wav-decoder

promise-based wav decoder
https://github.com/mohayonao/wav-decoder

Last synced: 4 months ago
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promise-based wav decoder

• Host: GitHub
• URL: https://github.com/mohayonao/wav-decoder
• Owner: mohayonao
• Archived: true
• Created: 2015-03-16T14:20:04.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2017-08-10T21:02:19.000Z (over 7 years ago)
• Last Synced: 2024-08-18T16:27:38.820Z (4 months ago)
• Language: JavaScript
• Homepage:
• Size: 2.49 MB
• Stars: 40
• Watchers: 4
• Forks: 15
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# wav-decoder

[![Build Status](https://img.shields.io/travis/mohayonao/wav-decoder.svg?style=flat-square)](https://travis-ci.org/mohayonao/wav-decoder)

[![NPM Version](https://img.shields.io/npm/v/wav-decoder.svg?style=flat-square)](https://www.npmjs.org/package/wav-decoder)

[![License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](https://mohayonao.mit-license.org/)

> promise-based wav decoder

## Installation

```

$ npm install wav-decoder

```

## API

- `decode(src: ArrayBuffer, [opts: object]): Promise`

  - if provide an instance of `Buffer`, it is converted to `ArrayBuffer` like `Uint8Array.from(src).buffer` implicitly.

  - `opts.symmetric` decode to symmetrical values (see [#14](https://github.com/mohayonao/wav-decoder/issues/14))

- `decode.sync(src: ArrayBuffer, [opts: object]): AudioData`

  - synchronous version

##### Returns

```js

interface AudioData {

  sampleRate: number;

  channelData: Float32Array[];

}

```

## Usage

```js

const fs = require("fs");

const WavDecoder = require("wav-decoder");

const readFile = (filepath) => {

  return new Promise((resolve, reject) => {

    fs.readFile(filepath, (err, buffer) => {

      if (err) {

        return reject(err);

      }

      return resolve(buffer);

    });

  });

};

readFile("foobar.wav").then((buffer) => {

  return WavDecoder.decode(buffer);

}).then(function(audioData) {

  console.log(audioData.sampleRate);

  console.log(audioData.channelData[0]); // Float32Array

  console.log(audioData.channelData[1]); // Float32Array

});

```

## License

MIT