The onerror property of the SpeechRecognition interface represents an event handler that will run when a speech recognition error occurs (when the error event fires.)
The onnomatch property of the SpeechRecognition interface represents an event handler that will run when the speech recognition service returns a final result with no significant recognition (when the nomatch event fires.)
The onresult property of the SpeechRecognition interface represents an event handler that will run when the speech recognition service returns a result — a word or phrase has been positively recognized and this has been communicated back to the app (when the result event fires.)
The onsoundend property of the SpeechRecognition interface represents an event handler that will run when any sound — recognisable speech or not — has stopped being detected (when the soundend event fires.)
The onsoundstart property of the SpeechRecognition interface represents an event handler that will run when any sound — recognisable speech or not — has been detected (when the soundstart event fires.)
The onspeechend property of the SpeechRecognition interface represents an event handler that will run when speech recognised by the speech recognition service has stopped being detected (when the speechend event fires.)
The onspeechstart property of the SpeechRecognition interface represents an event handler that will run when sound recognised by the speech recognition service as speech has been detected (when the speechstart event fires.)
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.)
The serviceURI property of the SpeechRecognition interface specifies the location of the speech recognition service used by the current SpeechRecognition to handle the actual recognition. The default is the user agent's default speech service.
The emma read-only property of the SpeechRecognitionEvent interface returns an Extensible MultiModal Annotation markup language (EMMA) — XML — representation of the result.