SpeechRecognition: audiostart event

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.

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:

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

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

Or use the onaudiostart event handler property:

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

Specifications

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

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
`audiostart_event`	33	79	No	No	20	14.1	4.4.3	33	No	20	14.5	2.0

Docs

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