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.

Bubbles No
Cancelable No
Interface Event
Event handler onaudiostart


You can use the audiostart event in an onaudiostart method:

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

recognition.addEventListener('audiostart', function() {
  console.log('Audio capturing started');

Or use the onaudiostart event handler property:

recognition.onaudiostart = function() {
  console.log('Audio capturing started');


Web Speech API
# eventdef-speechrecognition-audiostart

Browser compatibility

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See also