SpeechGrammar

Esta é uma tecnologia experimental
Verifique a tabela de compatibilidade entre Navegadores cuidadosamente antes de usar essa funcionalidade em produção.

A interface SpeechGrammar da Web Speech API representa um conjunto de palavras ou padrões de palavras, os quais, nós queremos que o serviço de reconhecimento reconheça.

A gramática é definida usando JSpeech Grammar Format (JSGF.) Outros formatos podem ser suportados no futuro.

Construtor

SpeechGrammar.SpeechGrammar(): Cria um novo objeto SpeechGrammar.

Propriedades

SpeechGrammar.src: Define e retorna a string contendo a gramática contida na instância do objeto SpeechGrammar.
SpeechGrammar.weight Optional: Define e retorna o peso do objeto SpeechGrammar.

Exemplos

var 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 ;'
var recognition = new SpeechRecognition();
var speechRecognitionList = new SpeechGrammarList();
speechRecognitionList.addFromString(grammar, 1);
recognition.grammars = speechRecognitionList;


console.log(speechRecognitionList[0].src); // deveria retornar o mesmo conteúdo da variável grammar
console.log(speechRecognitionList[0].weight); // deveria retornar 1 - o mesmo peso definido na linha 4.

Especificações

Specification	Status	Comment
Web Speech API The definition of 'SpeechGrammar' in that specification.	Rascunho

Compatibilidade com os navegadores

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`SpeechGrammar` Experimental	Chrome Full support 25 Prefixed Full support 25 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge Full support 79 Prefixed Full support 79 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Full support 44 Notes Disabled Full support 44 Notes Disabled Notes Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled From version 44: this feature is behind the `media.webspeech.recognition.enable` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support 27	Safari No support No	WebView Android No support No	Chrome Android Full support 64 Prefixed Full support 64 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 9.0 Prefixed Full support 9.0 Prefixed Prefixed Implemented with the vendor prefix: webkit
`SpeechGrammar()` constructor Experimental	Chrome Full support 25 Prefixed Full support 25 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge Full support 79 Prefixed Full support 79 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Full support 44 Notes Disabled Full support 44 Notes Disabled Notes Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled From version 44: this feature is behind the `media.webspeech.recognition.enable` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support 27	Safari No support No	WebView Android No support No	Chrome Android Full support 64 Prefixed Full support 64 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 9.0 Prefixed Full support 9.0 Prefixed Prefixed Implemented with the vendor prefix: webkit
`src` Experimental	Chrome Full support 25	Edge Full support 79	Firefox Full support 44 Notes Disabled Full support 44 Notes Disabled Notes Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled From version 44: this feature is behind the `media.webspeech.recognition.enable` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support 27	Safari No support No	WebView Android No support No	Chrome Android Full support 64	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 9.0
`weight` Experimental	Chrome Full support 25	Edge Full support 79	Firefox Full support 44 Notes Disabled Full support 44 Notes Disabled Notes Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled From version 44: this feature is behind the `media.webspeech.recognition.enable` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support 27	Safari No support No	WebView Android No support No	Chrome Android Full support 64	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 9.0

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
See implementation notes.: See implementation notes.
User must explicitly enable this feature.: User must explicitly enable this feature.
Requires a vendor prefix or different name for use.: Requires a vendor prefix or different name for use.

Veja também

Web Speech API