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) => {});

 => {};

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

Specifications

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

Browser compatibility

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See also