Your Search Results

    AudioBufferSourceNode.start()

    The start() method of the AudioBufferSourceNode Interface is used to schedule the start of the audio buffer playback.

    Syntax

    var source = audioCtx.createBufferSource();
source.start(audioCtx.currentTime + 1,3,10);

    Examples

    The most simple example just starts the audio buffer playing from the beginning — you don't need to specify any parameters in this case:

    source.start();

    The following more complex example will start playing, after 1 second pause, a 10 second snippet of an audio buffer 3 seconds into the audio duration.

    source.start(audioCtx.currentTime + 1,3,10);

    Note: For a more complete example showing start() in use, check out our AudioContext.decodeAudioData example, You can also run the code example live, or view the source.

    Returns

    Void.

    Parameters

    when
    The when parameter defines when the play will start. If when represents a time in the past, the play will start immediately. If the method is called more than one time, or after a call to AudioBufferSourceNode.stop(), an exception is raised.
    offset
    The offset parameter, which defaults to 0, defines where the playback will start.
    duration
    The duration parameter, which defaults to the length of the asset minus the value of offset, defines the length of the portion of the asset to be played.

    Specification

    Specification Status Comment
    Web Audio API
    The definition of 'start()' in that specification.    		 Working Draft  

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 14 webkit 23 Not supported 15 webkit
    22 (unprefixed)    		 6 webkit
    Feature Android Chrome Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
    Basic support Not supported 28 webkit 25 1.2 Not supported Not supported 6 webkit

    See also

    Document Tags and Contributors

    Tags: 
     Contributors to this page: bsansouci, brianblakely, teoli, bricejlin, Yuan.Xulei, chrisdavidmills
     Last updated by: bsansouci,