WebNoise

A noise generator for WebAudio.

Installation

Include src/web-noise.js in your HTML document:

<script type="text/javascript" src="<path-to-web-noise>/src/web-noise.js"></script>

Usage:

WebNoise requires an AudioContext:

// Create an AudioContext:
var context = null;
if (typeof window.AudioContext != 'undefined') {
	context = new AudioContext();
} else if (typeof window.webkitAudioContext != 'undefined') {
	context = new webkitAudioContext();
}

if (!context) {
	console.log('Web Audio API is not supported.');
	return;
}

// Create a noise generator and call configureNode() to prepare it:
var noise = new WebNoise(context);
noise.configureNode();

You can specify the buffer size, input channel count and output channel count by passing them to configureNode():

noise.configureNode({
	bufferSize: 256,
	inputChannels: 1,
	outputChannels: 1
});

After calling configureNode(), the node can be accessed via the .node property:

// Connect the noise generator node to the context destination (output):
noise.node.connect(context.destination);

You can adjust the noise character by setting the block size. This changes the rate at which the noise is generated. The block size is an integer with a minimum value of 1.

// Set the block size:
noise.blockSize(8);

// Get the current block size:
var size = noise.blockSize();

License:

WebNoise is made available under the MIT License. See LICENSE.txt for details.

Credits:

WebNoise was created by Tony Wallace.