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 (SpeechRecognition || webkitSpeechRecognition)(); 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

See also