SpeechRecognition: soundstart event

Experimental: 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
Web Speech API
# eventdef-speechrecognition-soundstart

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
soundstart_event
33
79
No
No
No
14.1
Yes
Yes
No
No
14.5
Yes

See also

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/soundstart_event