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The detune property of the OscillatorNode interface is an a-rate AudioParam representing detuning of oscillation in cents.


var oscillator = audioCtx.createOscillator();
oscillator.detune.setValueAtTime(100, audioCtx.currentTime); // value in cents

Note: though the AudioParam returned is read-only, the value it represents is not.


An a-rate AudioParam.


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).

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

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

oscillator.type = 'square';
oscillator.frequency.setValueAtTime(440, audioCtx.currentTime); // value in hertz
oscillator.detune.setValueAtTime(100, audioCtx.currentTime); // value in cents


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support14 Yes25 No156
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes14 Yes26 No15 ?

See also

Document Tags and Contributors

 Contributors to this page: MysteryPancake, fscholz, abbycar, alxjnssn, chrisdavidmills
 Last updated by: MysteryPancake,