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SpeechRecognition: start() method

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

js

start()

Parameters

None.

Return value

None (undefined).

Examples

js

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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
start 33 79 No No 20 14.1 4.4.3 33 No 20 14.5 2.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/start