SpeechRecognition.onaudiostart

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The onaudiostart property of the SpeechRecognition interface represents an event handler that will run when the user agent has started to capture audio (when the audiostart event fires.)

Syntax

mySpeechRecognition.onaudiostart = function() { ... };

Examples

var recognition = new SpeechRecognition();

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

Specifications

Specification Status Comment
Web Speech API
The definition of 'onaudiostart' in that specification.
Draft

Browser compatibility

BCD tables only load in the browser

Firefox OS permissions

To use speech recognition in an app, you need to specify the following permissions in your manifest:

"permissions": {
  "audio-capture" : {
    "description" : "Audio capture"
  },
  "speech-recognition" : {
    "description" : "Speech recognition"
  }
}

You also need a privileged app, so you need to include this as well:

  "type": "privileged"

See also