speech-recognition - 使用微软语音识别，我能知道它开始和结束的时刻吗？

Question

我正在使用 Microsoft 引擎进行语音识别。代码是这样的:

static ManualResetEvent _completed = null;
static void Main(string[] args)
{
     _completed = new ManualResetEvent(false);
     SpeechRecognitionEngine _recognizer = new SpeechRecognitionEngine();
     _recognizer.LoadGrammar(new Grammar(new GrammarBuilder("test")) Name = { "testGrammar" }); // load a grammar
     _recognizer.LoadGrammar(new Grammar(new GrammarBuilder("exit")) Name = { "exitGrammar" }); // load a "exit" grammar
     _recognizer.SpeechRecognized += _recognizer_SpeechRecognized; 
     _recognizer.SetInputToDefaultAudioDevice(); // set the input of the speech recognizer to the default audio device
     _recognizer.RecognizeAsync(RecognizeMode.Multiple); // recognize speech asynchronous
     _completed.WaitOne(); // wait until speech recognition is completed
     _recognizer.Dispose(); // dispose the speech recognition engine
} 
void _recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
     if (e.Result.Text == "test") // e.Result.Text contains the recognized text
     {
         Console.WriteLine("The test was successful!");
     } 
     else if (e.Result.Text == "exit")
     {
         _completed.Set();
     }
}

它似乎很酷。当我说“测试”或“退出”时，程序可能会得到。但是我能得到程序启动的确切时间以及程序完成测试并重新启动以测试另一个单词的时间吗？

Answer 1

RecognitionResult.Audio 具有音频的开始时间和持续时间。

void SpeechRecognizedHandler(object sender, SpeechRecognizedEventArgs e)
{
  if (e.Result == null) return;

  // Add event handler code here.

  // The following code illustrates some of the information available
  // in the recognition result.
      Console.WriteLine("Grammar({0}): {1}", e.Result.Grammar.Name, e.Result.Text);
      Console.WriteLine("Audio for result:");
      Console.WriteLine("  Start time: "+ e.Result.Audio.StartTime);
      Console.WriteLine("  Duration: " + e.Result.Audio.Duration);
      Console.WriteLine("  Format: " + e.Result.Audio.Format.EncodingFormat);
}