Your Search Results


    The type property of the OscillatorNode interface represents the shape of the oscillator wave generated. Different waves will produce different tones.

    The different available values are:

    • sine
    • square
    • sawtooth
    • triangle
    • custom

    Note: You can use the OscillatorNode.setPeriodicWave method when using custom to use a custom wave type.


    var oscillator = audioCtx.createOscillator();
    oscillator.type = 'square';


    An a-rate AudioParam.


    The following example shows basic usage of an AudioContext to create an oscillator node. For an applied example, check out our Violent Theremin demo (see app.js for relevant code).

    // 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


    Specification Status Comment
    Web Audio API
    The definition of 'type' 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 webkit

    See also


    Document Tags and Contributors

    Contributors to this page: arslonga, fscholz, chrisdavidmills
    Last updated by: fscholz,