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    AudioContext.createOscillator()

    The createOscillator() method of the AudioContext interface creates an OscillatorNode, a source representing a periodic waveform. It basically generates a constant tone.

    Syntax

    var audioCtx = new AudioContext();
var oscillator = audioCtx.createOscillator();

    Returns

    An OscillatorNode.

    Example

    The following example shows basic usage of an AudioContext to create an oscillator node. For applied examples/information, check out our Violent Theremin demo (see app.js for relevant code); also see our OscillatorNode page for more information.

    // create web audio api context
var audioCtx = new (window.AudioContext || window.webkitAudioContext)();

// create Oscillator node
var oscillator = audioCtx.createOscillator();

oscillator.type = 'square';
oscillator.frequency.value = 3000; // value in hertz
oscillator.start();

    Specifications

    Specification Status Comment
    Web Audio API
    The definition of 'createOscillator' 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

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