SpeechRecognitionEvent.interpretation

The interpretation read-only property of the SpeechRecognitionEvent interface returns the semantic meaning of what the user said.

This might be determined, for instance, through the SISR specification of semantics in a grammar (see Semantic Interpretation for Speech Recognition (SISR) Version 1.0 for specification and examples.)

Syntax

var myInterpretation = event.interpretation;

Value

The returned value can be of any type. If no semantic interpretation has been returned by the speec recognition system, null will be returned.

Examples

recognition.onresult = function(event) {
  var color = event.results[0][0].transcript;
  diagnostic.textContent = 'Result received: ' + color + '.';
  bg.style.backgroundColor = color;
  console.log(event.interpretation);
}

Specifications

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

Browser compatibility

• [1] Speech recognition interfaces are currently prefixed on Chrome, so you'll need to prefix interface names appropriately, e.g. webkitSpeechRecognition; You'll also need to serve your code through a web server for recognition to work.
• [2] Can be enabled via the media.webspeech.recognition.enable flag in about:config, although note that currently speech recognition won't work on Desktop Firefox — it will be properly exposed soon, once the required internal permissions are sorted out.

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

• Web Speech API