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SpeechRecognition.onstart

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  1. Syntax
  2. Examples
  3. Specifications
  4. Browser compatibility
  5. See also

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

The onstart property of the SpeechRecognition interface represents an event handler that will run when the speech recognition service has begun listening to incoming audio with intent to recognize grammars associated with the current SpeechRecognition (when the start event fires.)

Syntax

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

Examples

recognition.onstart = function() {
  console.log('Speech recognition service has started');
}

Specifications

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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support33 webkit 1 ? No No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes webkit 1 Yes webkit 1 ? No No No ?

1. You'll need to serve your code through a web server for recognition to work.

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

Document Tags and Contributors

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Contributors to this page: lucian95, chrisdavidmills
Last updated by: lucian95,