javascript - 将 Grammar 与 Web Speech API 结合使用

Question

是的，有这样的问题，但它们太旧了...现在 chrome.link 完全支持语法:https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/grammars

我正在使用Web Speech API来实现语音识别。 SpeechRecognition 接口(interface)的 Grammars 属性返回并设置 SpeechGrammar 对象的集合，这些对象表示当前 SpeechRecognition 将理解的语法。我正在使用 chrome 的最新更新，“他们”说 chrome 支持语法。

大多数时候，当我说“你是谁”时，网络语音将其识别为“你好吗”。例如，我如何将句子“你是谁”设置为可能的输入？

我尝试了几个小时，拉扯我的头发但没有成功......

这是代码:

  var SpeechRecognition = SpeechRecognition || webkitSpeechRecognition;
  var SpeechGrammarList = SpeechGrammarList || webkitSpeechGrammarList;
  var SpeechRecognitionEvent = SpeechRecognitionEvent || webkitSpeechRecognitionEvent;

  var recognition = new SpeechRecognition();
  var speechRecognitionList = new SpeechGrammarList();
  recognition.grammars = speechRecognitionList;
  recognition.lang = 'en-GB';
  recognition.interimResults = false;
  recognition.maxAlternatives = 1;

  recognition.start();

  recognition.onresult = function(event) {

    var speechResult = event.results[0][0].transcript;
 // We get speechResult to do something with it here

    console.log('Confidence: ' + event.results[0][0].confidence);
  }

  recognition.onspeechend = function() {
    recognition.stop();
    console.log('Speech ended!');
  }

  recognition.onerror = function(event) {
 console.log('Error occurred in recognition: ' + event.error);
  }

  recognition.onaudiostart = function(event) {
      //Fired when the user agent has started to capture audio.
      console.log('SpeechRecognition.onaudiostart');
  }

  recognition.onaudioend = function(event) {
      //Fired when the user agent has finished capturing audio.
      console.log('SpeechRecognition.onaudioend');
  }

  recognition.onend = function(event) {
      //Fired when the speech recognition service has disconnected.
      console.log('SpeechRecognition.onend');
  }

  recognition.onnomatch = function(event) {
      //Fired when the speech recognition can't recognise speech
      console.log('SpeechRecognition.onnomatch');
  }

  recognition.onsoundstart = function(event) {
      //Fired when any sound — recognisable speech or not — has been detected.
      console.log('SpeechRecognition.onsoundstart');
  }

  recognition.onsoundend = function(event) {
      //Fired when no sound present
      console.log('SpeechRecognition.onsoundend');
  }

  recognition.onspeechstart = function (event) {
      //Fired when speech starts
      console.log('SpeechRecognition.onspeechstart');
  }
  recognition.onstart = function(event) {
      //Fired when the speech recognition service has begun listening
      console.log('SpeechRecognition.onstart');
  }

Answer 1

仅供引用，截至 2020 年 9 月，语法似乎在 Chrome 中根本不起作用。由于依赖外部第 3 方资源并通过网络将用户数据传输给未知方，因此存在对 voiceGrammarList 未指定且存在隐私问题的讨论。

https://github.com/WICG/speech-api/pull/58

还有

https://github.com/WICG/speech-api/issues/57