The copyFromChannel()
method of the AudioBuffer
interface copies the samples from the specified channel of the AudioBuffer
to the destination array.
Syntax
myArrayBuffer.copyFromChannel(destination,channelNumber,startInChannel);
Parameters
- destination
- A
Float32Array
to copy the channel data to. - channelNumber
- The channel number of the current AudioBuffer to copy the channel data from. If channelNumber is greater than or equal to
AudioBuffer.numberOfChannels
, anINDEX_SIZE_ERR
will be thrown. - startInChannel Optional
- An optional offset to copy the data from. If startInChannel is greater than
AudioBuffer.length
, anINDEX_SIZE_ERR
will be thrown.
Example
var myArrayBuffer = audioCtx.createBuffer(2, frameCount, audioCtx.sampleRate); var anotherArray = new Float32Array; myArrayBuffer.copyFromChannel(anotherArray,1,0);
Specification
Specification | Status | Comment |
---|---|---|
Web Audio API The definition of 'copyFromChannel' in that specification. |
Working Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 14.0 webkit | 27 (27) | No support | 15 webkit 22 (unprefixed) |
No support |
Unprefixed | 43.0 | ? | ? | ? | No support |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | No support | ? | 27.0 (27) | 1.2 | No support | No support | No support | 28.0 webkit |
Unprefixed | No support | No support | ? | ? | ? | ? | No support | 43.0 |