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    AudioBuffer.copyFromChannel()

    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, an INDEX_SIZE_ERR will be thrown.
    startInChannel Optional
    An optional offset to copy the data from. If startInChannel is greater than AudioBuffer.length, an INDEX_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

    See also

    Document Tags and Contributors

    Tags: 
     Contributors to this page: halfbyte, jpmedley, eharris, fscholz, teoli, chrisdavidmills
     Last updated by: halfbyte,