SpeechRecognitionAlternative

The SpeechRecognitionAlternative interface of the Web Speech API represents a single word that has been recognized by the speech recognition service. Available only in secure contexts.

MDN Reference

Properties

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The confidence read-only property of the SpeechRecognitionResult interface returns a numeric estimate of how confident the speech recognition system is that the recognition is correct.

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The transcript read-only property of the SpeechRecognitionResult interface returns a string containing the transcript of the recognized word(s).