Limited availability
The nomatch
event of the Web Speech API is fired when the speech recognition service returns a final result with no significant recognition.
This may involve some degree of recognition, which doesn't meet or exceed the confidence
threshold.
Use the event name in methods like addEventListener()
, or set an event handler property.
addEventListener("nomatch", (event) => { })
onnomatch = (event) => { }
Event type Event properties
In addition to the properties listed below, properties from the parent interface, Event
, are available.
SpeechRecognitionEvent.emma
Read only
Returns an Extensible MultiModal Annotation markup language (EMMA) â XML â representation of the result.
SpeechRecognitionEvent.interpretation
Read only
Returns the semantic meaning of what the user said.
SpeechRecognitionEvent.resultIndex
Read only
Returns the lowest index value result in the SpeechRecognitionResultList
"array" that has actually changed.
SpeechRecognitionEvent.results
Read only
Returns a SpeechRecognitionResultList
object representing all the speech recognition results for the current session.
You can use the nomatch
event in an addEventListener
method:
const recognition = new webkitSpeechRecognition() || new SpeechRecognition();
recognition.addEventListener("nomatch", () => {
console.error("Speech not recognized");
});
Or use the onnomatch
event handler property:
recognition.onnomatch = () => {
console.error("Speech not recognized");
};
Specifications Browser compatibility See also
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