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JavaScript audio time-stretching and pitch-shifting library

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#soundtouch.js

JavaScript audio time-stretching and pitch-shifting library. Based on the C++ implementation of [SoundTouch](http://www.surina.net/soundtouch/ soundtouch).

Built by Ryan Berdeen. getWebAudioNode utility written by Adrian Holovaty. User-friendly PitchShifter wrapper by fiala.

##Setup

  • Include soundtouch.min.js in your HTML, or require('soundtouch-js') in Node (Node implementation is incomplete!).

##Usage

  • In order to run PitchShifter, you need a loaded and decoded AudioBuffer
  • After the buffer has been decoded, e.g. in the callback of AudioContext.decodeAudioData, create a new PitchShifter as follows
	//instantiate pitchshifter
	pitchshifter = new PitchShifter(context, buffer, 1024);
	//set pitch/tempo
	pitchshifter.tempo = 0.75;
	pitchshifter.pitch = 2;
  • to begin playback, connect the PitchShifter to the WebAudio destination (or another node), and disconnect it to pause.
  • note that PitchShifter is a pseudo-node, and cannot be connected to.

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