RecognizeCompletedEventArgs.InitialSilenceTimeout Propriedade

Definição

Namespace:

System.Speech.Recognition

Assembly:

System.Speech.dll

Pacote:

System.Speech v9.0.0-preview.6.24327.7

Origem:

RecognizeCompletedEventArgs.cs

Obtém um valor que indica se um tempo limite de silêncio inicial gerou o evento RecognizeCompleted.

public:
 property bool InitialSilenceTimeout { bool get(); };

public bool InitialSilenceTimeout { get; }

member this.InitialSilenceTimeout : bool

Public ReadOnly Property InitialSilenceTimeout As Boolean

Valor da propriedade

Boolean

true se o SpeechRecognitionEngine tiver detectado apenas o silêncio por um período de tempo mais longo do que foi especificado por sua InitialSilenceTimeout propriedade; caso contrário false, .

Exemplos

O exemplo a seguir executa o reconhecimento de fala assíncrono em uma gramática de reconhecimento de fala, usando o SpeechRecognitionEngine.RecognizeAsync método com o reconhecedor em processo. O exemplo usa Choices objetos e GrammarBuilder para criar a gramática de reconhecimento de fala antes de criá-la em um Grammar objeto . Um manipulador para o SpeechRecognitionEngine.RecognizeCompleted evento gera informações sobre a operação de reconhecimento para o console.

using System;  
using System.Speech.Recognition;  

namespace SampleRecognition  
{  
  class Program  
  {  
    private static SpeechRecognitionEngine recognizer;  
    public static void Main(string[] args)  
    {  

      // Initialize a SpeechRecognitionEngine object and set its input.  
      recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));  
      recognizer.SetInputToDefaultAudioDevice();  

      // Configure recognition parameters.  
      recognizer.InitialSilenceTimeout = TimeSpan.FromSeconds(5.0);  
      recognizer.BabbleTimeout = TimeSpan.FromSeconds(3.0);  
      recognizer.EndSilenceTimeout = TimeSpan.FromSeconds(1.0);  
      recognizer.EndSilenceTimeoutAmbiguous = TimeSpan.FromSeconds(1.0);  

      // Add a handler for the LoadGrammarCompleted event.  
      recognizer.LoadGrammarCompleted +=  
        new EventHandler<LoadGrammarCompletedEventArgs>(recognizer_LoadGrammarCompleted);  

      // Add a handler for the RecognizeCompleted event.  
      recognizer.RecognizeCompleted +=   
        new EventHandler<RecognizeCompletedEventArgs>(recognizer_RecognizeCompleted);  

      // Create a speech recognition grammar and build it into a Grammar object.  
      Choices bankingMenu = new Choices(new string[]   
      { "Access accounts", "Transfer funds", "Pay bills", "Get loan balance" });  
      GrammarBuilder banking = new GrammarBuilder(bankingMenu);  
      Grammar bankGrammar = new Grammar(banking);  
      bankGrammar.Name = "Banking Menu";  

      // Load the Grammar objects to the recognizer.  
      recognizer.LoadGrammarAsync(bankGrammar);  

      // Start asynchronous, continuous recognition.  
      recognizer.RecognizeAsync();  

      // Keep the console window open.  
      Console.ReadLine();  
    }  

    // Handle the RecognizeCompleted event.  
    static void recognizer_RecognizeCompleted(object sender, RecognizeCompletedEventArgs e)  
    {  
      if (e.Error != null)  
      {  
        Console.WriteLine(  
          "RecognizeCompleted, error occurred during recognition: {0}", e.Error);  
        return;  
      }  

      if (e.InitialSilenceTimeout || e.BabbleTimeout)  
      {  
        Console.WriteLine(  
          "RecognizeCompleted: BabbleTimeout({0}), InitialSilenceTimeout({1}).",  
          e.BabbleTimeout, e.InitialSilenceTimeout);  
        return;  
      }  

      if (e.InputStreamEnded)  
      {  
        Console.WriteLine(  
          "RecognizeCompleted: AudioPosition({0}), InputStreamEnded({1}).",  
          e.AudioPosition, e.InputStreamEnded);  
      }  

      if (e.Result != null)  
      {  
        Console.WriteLine(  
          "RecognizeCompleted: Grammar ({0}), Text ({1}), Confidence ({2}), AudioPosition ({3}).",  
          e.Result.Grammar.Name, e.Result.Text, e.Result.Confidence, e.AudioPosition);  
      }  

      else  
      {  
        Console.WriteLine("RecognizeCompleted: No result.");  
      }   

      Console.WriteLine();  
      Console.WriteLine("Press any key to exit...");  
      Console.ReadKey();  
    }  

    // Handle the LoadGrammarCompleted event.   
    static void recognizer_LoadGrammarCompleted(object sender, LoadGrammarCompletedEventArgs e)  
    {  
      string grammarName = e.Grammar.Name;  
      bool grammarLoaded = e.Grammar.Loaded;  
      bool grammarEnabled = e.Grammar.Enabled;  

      if (e.Error != null)  
      {  
        Console.WriteLine("LoadGrammar for {0} failed with a {1}.",  
        grammarName, e.Error.GetType().Name);  

        // Add exception handling code here.  
      }  

      Console.WriteLine("Grammar {0} {1} loaded and {2} enabled.", grammarName,   
        (grammarLoaded) ? "is" : "is not", (grammarEnabled) ? "is" : "is not");  
    }  
  }            
}  

Confira também

• SpeechRecognitionEngine
• RecognizeCompleted
• InitialSilenceTimeout