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SpeechRecognition: soundstart event

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

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 20 14.1 4.4.3 33 No 20 14.5 2.0

See also

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