createBuffer

Summary

Creates an AudioBuffer of the given size. The audio data in the buffer will be zero-initialized (silent). An exception will be thrown if the numberOfChannels or sampleRate are out-of-bounds.

Method of apis/webaudio/AudioContextapis/webaudio/AudioContext

Syntax

var  = AudioContext.createBuffer(numberOfChannels, length, sampleRate);

Parameters

numberOfChannels

Data-type

unsigned long

Determines how many channels the buffer will have. An implementation must support at least 32 channels.

length

Data-type

unsigned long

Determines the size of the buffer in sample-frames.

sampleRate

Data-type

Number

Describes the sample-rate of the linear PCM audio data in the buffer in sample-frames per second. An implementation must support sample-rates in at least the range 22050 to 96000.

Return Value

Returns an object of type

AudioBuffer

Examples

var audioCtx = new AudioContext();
var buffer = audioCtx.createBuffer(2, 22050, 44100);

Related specifications

W3C Web Audio API

W3C Editor’s Draft