webkitSpeechRecognition 自动停止

Question

我正在使用 webkitSpeechRecognition。但是当启动识别时，它会在 1-2 分钟不活动后停止。我试图在它结束后将其击退。当我执行 start_transcript(language) 时，它不断产生一千个 console.log("voice recognition terminate");而且它不再识别了。

var final_transcript = '';
var recognizing = false;
var start_timestamp;
if (!('webkitSpeechRecognition' in window)) {
  upgrade();
} else {
  var recognition = new webkitSpeechRecognition();
  recognition.continuous = true;
  recognition.interimResults = true;
  recognition.onstart = function() {
    recognizing = true;
  };

  recognition.onend = function() {
    console.log("voice recognition terminated");
    recognition.start();
  };

function start_transcript(language) {
  if (recognizing) {
    recognition.stop();
    return;
  }
  final_transcript = '';
  var rec_lang = 'fr-FR';
    recognition.lang = rec_lang;
  recognition.start();
}

非常感谢任何帮助和建议。

谢谢

Answer 1

这里和那里只是一些微小的缺失。更新您的代码以填补那些缺失的空白，在您的控制台中尝试此操作。也不要忘记致电start_transcript。

var final_transcript = '';
var recognizing = false;
var start_timestamp;
if (!('webkitSpeechRecognition' in window)) {
  upgrade();
} else {
  var recognition = new webkitSpeechRecognition();
  recognition.continuous = true;
  recognition.interimResults = true;
  recognition.onstart = function() {
    recognizing = true;
  };

  // need to have result as well 
  recognition.onresult = function(e) {
    console.log(e.results);

    // Extracting the words from the result and printing in the console 
    var transcript = [...e.results]
      .map(result => result[0])
      .map(result => result.transcript)
      .join('');
    console.log(transcript);
  };

  recognition.onend = function() {
    console.log("voice recognition terminated");
    recognition.start();
  };
} // I guess you forgot closing the else block as well

function start_transcript() {
  if (recognizing) {
    recognition.stop();
    return;
  }
  final_transcript = '';
  var rec_lang = 'fr-FR';
  recognition.lang = rec_lang;
  recognition.start();
}

PS：我也参考了 Wesbos 的 javascript30 做了一个类似的项目，并将它与 webpack 混合。如果您想参考，请访问https://github.com/Mondal10/personal-voice-assistant