The stop method of the OscillatorNode interface specifies the time to stop playing the tone. Its parameter is optional and defaults to 0.


oscillator.stop(when); // stop playing oscillator at when


when Optional
An optional double representing the audio context time when the oscillator should stop. If a value is not included, it defaults to 0. If the time is equal to or before the current audio context time, the oscillator will stop playing immediately.


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.stop(audioCtx.currentTime + 2); // stop 2 seconds after the current time


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support14 Yes251 No156
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes14 Yes261 No15 ?

1. Before Firefox 30, the when parameter was not optional.

See also

Document Tags and Contributors

 Contributors to this page: fscholz, chrisdavidmills, abbycar, Np, baddeo, simonbw, teoli, waldir
 Last updated by: fscholz,