SpeechRecognition: soundstart event

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js
addEventListener("soundstart", (event) => {});

onsoundstart = (event) => {};

Event type

A generic Event with no added properties.

Examples

You can use the soundstart event in an addEventListener method:

js
const recognition = new webkitSpeechRecognition() || new SpeechRecognition();

recognition.addEventListener("soundstart", () => {
  console.log("Some sound is being received");
});

Or use the onsoundstart event handler property:

js
recognition.onsoundstart = () => {
  console.log("Some sound is being received");
};

Specifications

Specification
Web Speech API
# eventdef-speechrecognition-soundstart
Web Speech API
# dom-speechrecognition-onsoundstart

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
soundstart event

Legend

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Full support
Full support
No support
No support

See also