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    AudioContext.createDelay()

    The createDelay() method of the AudioContext Interface is used to create a DelayNode, which is used to delay the incoming audio signal by a certain amount.

    Syntax

    var audioCtx = new AudioContext();
    var synthDelay = audioCtx.createDelay(5.0);

    Parameters

    maxDelayTime
    The maximum amount of time, in seconds, that the audio signal can be delayed by. The default value is 0.

    Returns

    A DelayNode.

    Example

    We have created a simple example that allows you to play three different samples on a constant loop — see create-delay (you can also view the source code). If you just press the play buttons, the loops will start immediately; if you slide the sliders up to the right, then press the play buttons, a delay will be introduced, so the looping sounds don't start playing for a short amount of time.

    var AudioContext = window.AudioContext || window.webkitAudioContext;
    var audioCtx = new AudioContext();
    
    var synthDelay = audioCtx.createDelay(5.0);
    
      ...
    
    var synthSource;
    
    playSynth.onclick = function() {
      synthSource = audioCtx.createBufferSource();
      synthSource.buffer = buffers[2];
      synthSource.loop = true;
      synthSource.start();
      synthSource.connect(synthDelay);
      synthDelay.connect(destination);
      this.setAttribute('disabled', 'disabled');
    }
    
    stopSynth.onclick = function() {
      synthSource.disconnect(synthDelay);
      synthDelay.disconnect(destination);
      synthSource.stop();
      playSynth.removeAttribute('disabled');
    }
    
    ...
    
    var delay1;
    rangeSynth.oninput = function() {
    delay1 = rangeSynth.value;
    synthDelay.delayTime.value = delay1;
    }
    

    Specifications

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

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 10.0webkit 25.0 (25.0)  Not supported 15.0webkit
    22 (unprefixed)
    6.0webkit
    Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
    Basic support ? 26.0 1.2 ? ? ? 33.0

    See also

    Document Tags and Contributors

    Contributors to this page: teoli, chrisdavidmills
    Last updated by: teoli,