SpeechRecognition.start()

The start() method of the Web Speech API starts the speech recognition service listening to incoming audio with intent to recognize grammars associated with the current SpeechRecognition.

Syntax

start()

Parameters

None.

Return value

None (undefined).

Examples

const grammar = '#JSGF V1.0; grammar colors; public <color> = aqua | azure | beige | bisque | black | blue | brown | chocolate | coral | crimson | cyan | fuchsia | ghostwhite | gold | goldenrod | gray | green | indigo | ivory | khaki | lavender | lime | linen | magenta | maroon | moccasin | navy | olive | orange | orchid | peru | pink | plum | purple | red | salmon | sienna | silver | snow | tan | teal | thistle | tomato | turquoise | violet | white | yellow ;'
const recognition = new SpeechRecognition();
const speechRecognitionList = new SpeechGrammarList();
speechRecognitionList.addFromString(grammar, 1);
recognition.grammars = speechRecognitionList;

const diagnostic = document.querySelector('.output');
const bg = document.querySelector('html');

document.body.onclick = () => {
  recognition.start();
  console.log('Ready to receive a color command.');
}

abortBtn.onclick = () => {
  recognition.abort();
  console.log('Speech recognition aborted.');
}

recognition.onspeechend = () => {
  recognition.stop();
  console.log('Speech recognition has stopped.');
}

Specifications

Specification
Web Speech API
# dom-speechrecognition-start

Browser compatibility

BCD tables only load in the browser

See also