The speechstart event of the Web Speech API is fired when sound recognized by the speech recognition service as speech has been detected.
SpeechRecognition: speechstart event
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener('speechstart', event => { }) onspeechstart = event => { }
Event type
A generic Event with no added properties.
Examples
You can use the speechstart event in an addEventListener method:
var recognition = new webkitSpeechRecognition() || new SpeechRecognition(); recognition.addEventListener('speechstart', function() { console.log('Speech has been detected'); });
Or use the onspeechstart event handler property:
recognition.onspeechstart = function() { console.log('Speech has been detected'); }
Specifications
| Specification |
|---|
| Web Speech API # eventdef-speechrecognition-speechstart |
| Web Speech API # dom-speechrecognition-onspeechstart |
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 | |
speechstart_event |
33
|
79
|
No
|
No
|
No
|
14.1
|
4.4.3
|
33
|
No
|
No
|
14.5
|
2.0
|
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/speechstart_event
