SpeechGrammar

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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
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
SpeechGrammar
Experimental
Chrome Full support 25
Prefixed
Full support 25
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge No support NoFirefox 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 NoOpera Full support 27Safari No support NoWebView Android No support NoChrome Android Full support 64
Prefixed
Full support 64
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Firefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
SpeechGrammar() constructor
Experimental
Chrome Full support 25
Prefixed
Full support 25
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge No support NoFirefox 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 NoOpera Full support 27Safari No support NoWebView Android No support NoChrome Android Full support 64
Prefixed
Full support 64
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Firefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
src
Experimental
Chrome Full support 25Edge No support NoFirefox 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 NoOpera Full support 27Safari No support NoWebView Android No support NoChrome Android Full support 64Firefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
weight
Experimental
Chrome Full support 25Edge No support NoFirefox 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 NoOpera Full support 27Safari No support NoWebView Android No support NoChrome Android Full support 64Firefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

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.

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