SpeechRecognition: nomatch event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("nomatch", (event) => { })
onnomatch = (event) => { }
Event type
A SpeechRecognitionEvent. Inherits from Event.
Event properties
In addition to the properties listed below, properties from the parent interface, Event, are available.
SpeechRecognitionEvent.emmaRead only-
Returns an Extensible MultiModal Annotation markup language (EMMA) — XML — representation of the result.
SpeechRecognitionEvent.interpretationRead only-
Returns the semantic meaning of what the user said.
SpeechRecognitionEvent.resultIndexRead only-
Returns the lowest index value result in the
SpeechRecognitionResultList"array" that has actually changed. SpeechRecognitionEvent.resultsRead only-
Returns a
SpeechRecognitionResultListobject representing all the speech recognition results for the current session.
Examples
You can use the nomatch event in an addEventListener method:
const recognition = new (SpeechRecognition || webkitSpeechRecognition)();
recognition.addEventListener("nomatch", () => {
console.error("Speech not recognized");
});
Or use the onnomatch event handler property:
recognition.onnomatch = () => {
console.error("Speech not recognized");
};
Specifications
| Specification |
|---|
| Web Speech API # eventdef-speechrecognition-nomatch |
| Web Speech API # dom-speechrecognition-onnomatch |
Browser compatibility
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