SpeechRecognition: audiostart event

Limited availability

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

The audiostart event of the Web Speech API is fired when the user agent has started to capture audio for speech recognition.

Syntax

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

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

onaudiostart = (event) => {};

Event type

A generic Event with no added properties.

Examples

You can use the audiostart event in an addEventListener method:

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

recognition.addEventListener("audiostart", () => {
  console.log("Audio capturing started");
});

Or use the onaudiostart event handler property:

js
recognition.onaudiostart = () => {
  console.log("Audio capturing started");
};

Specifications

Specification
Web Speech API
# eventdef-speechrecognition-audiostart
Web Speech API
# dom-speechrecognition-onaudiostart

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
audiostart event

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support

See also