SpeechRecognition: soundstart event

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The soundstart event of the Web Speech API is fired when any sound — recognisable speech or not — has been detected.

Bubbles No
Cancelable No
Interface Event
Event handler property onsoundstart

Examples

You can use the soundstart event in an addEventListener method:

var recognition = new webkitSpeechRecognition() || new SpeechRecognition();

recognition.addEventListener('soundstart', function() {
  console.log('Some sound is being received');
});

Or use the onsoundstart event handler property:

recognition.onsoundstart = function() {
  console.log('Some sound is being received');
}

Specifications

Specification Status Comment
Web Speech API
The definition of 'speech recognition events' in that specification.
Draft

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
soundstart event
Experimental
Chrome Full support 33Edge Full support 79Firefox No support NoIE No support NoOpera No support NoSafari No support NoWebView Android Full support YesChrome Android Full support YesFirefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android Full support Yes

Legend

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

See also