SpeechRecognitionAlternative
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The SpeechRecognitionAlternative
interface of the Web Speech API represents a single word that has been recognized by the speech recognition service.
Properties
SpeechRecognitionAlternative.transcript
Read only-
Returns a string containing the transcript of the recognized word.
SpeechRecognitionAlternative.confidence
Read only-
Returns a numeric estimate of how confident the speech recognition system is that the recognition is correct.
Examples
This code is excerpted from our Speech color changer example.
recognition.onresult = function(event) {
// The SpeechRecognitionEvent results property returns a SpeechRecognitionResultList object
// The SpeechRecognitionResultList object contains SpeechRecognitionResult objects.
// It has a getter so it can be accessed like an array
// The first [0] returns the SpeechRecognitionResult at position 0.
// Each SpeechRecognitionResult object contains SpeechRecognitionAlternative objects
// that contain individual results.
// These also have getters so they can be accessed like arrays.
// The second [0] returns the SpeechRecognitionAlternative at position 0.
// We then return the transcript property of the SpeechRecognitionAlternative object
var color = event.results[0][0].transcript;
diagnostic.textContent = 'Result received: ' + color + '.';
bg.style.backgroundColor = color;
}
Specifications
Specification |
---|
Web Speech API # speechreco-alternative |
Browser compatibility
BCD tables only load in the browser