SpeechRecognitionRejectedEventArgs Classe

Definição

public ref class SpeechRecognitionRejectedEventArgs : System::Speech::Recognition::RecognitionEventArgs

public class SpeechRecognitionRejectedEventArgs : System.Speech.Recognition.RecognitionEventArgs

[System.Serializable]
public class SpeechRecognitionRejectedEventArgs : System.Speech.Recognition.RecognitionEventArgs

type SpeechRecognitionRejectedEventArgs = class
    inherit RecognitionEventArgs

[<System.Serializable>]
type SpeechRecognitionRejectedEventArgs = class
    inherit RecognitionEventArgs

Public Class SpeechRecognitionRejectedEventArgs
Inherits RecognitionEventArgs

Herança

Object

EventArgs

RecognitionEventArgs

SpeechRecognitionRejectedEventArgs

Atributos

SerializableAttribute

Exemplos

O exemplo a seguir reconhece frases como "Exibir a lista de artistas na categoria jazz" ou "Exibir álbuns gospel". O exemplo usa um manipulador para o SpeechRecognitionRejected evento para exibir uma notificação no console quando a entrada de fala não pode ser correspondida ao conteúdo da gramática com confiança suficiente para produzir um reconhecimento bem-sucedido.

using System;  
using System.Speech.Recognition;  

namespace SampleRecognition  
{  
  class Program  
  {  
    static void Main(string[] args)  

    // Initialize a shared speech recognition engine.  
    {  
      using (SpeechRecognizer recognizer =  
         new SpeechRecognizer())  
      {  

        // Create a grammar.  
        //  Create lists of alternative choices.  
        Choices listTypes = new Choices(new string[] { "albums", "artists" });  
        Choices genres = new Choices(new string[] {   
          "blues", "classical", "gospel", "jazz", "rock" });  

        //  Create a GrammarBuilder object and assemble the grammar components.  
        GrammarBuilder mediaMenu = new GrammarBuilder("Display");  
        mediaMenu.Append("the list of", 0, 1);  
        mediaMenu.Append(listTypes);  
        mediaMenu.Append("in the", 0, 1);  
        mediaMenu.Append(genres);  
        mediaMenu.Append("category", 0, 1);  

        //  Build a Grammar object from the GrammarBuilder.  
        Grammar mediaMenuGrammar = new Grammar(mediaMenu);  
        mediaMenuGrammar.Name = "Media Chooser";  

        // Attach event handlers.  
        recognizer.LoadGrammarCompleted +=  
          new EventHandler<LoadGrammarCompletedEventArgs>(recognizer_LoadGrammarCompleted);  
        recognizer.SpeechRecognized +=  
          new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);  
        recognizer.SpeechRecognitionRejected +=   
          new EventHandler<SpeechRecognitionRejectedEventArgs>(recognizer_SpeechRecognitionRejected);  

        // Load the grammar object to the recognizer.  
        recognizer.LoadGrammarAsync(mediaMenuGrammar);  

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

    // Handle the SpeechRecognitionRejected event.  
    static void recognizer_SpeechRecognitionRejected(object sender, SpeechRecognitionRejectedEventArgs e)  
    {  
      Console.WriteLine("Speech input was rejected.");  
      foreach (RecognizedPhrase phrase in e.Result.Alternates)  
      {  
        Console.WriteLine("  Rejected phrase: " + phrase.Text);  
        Console.WriteLine("  Confidence score: " + phrase.Confidence);  
      }  
    }  

    // Handle the LoadGrammarCompleted event.  
    static void recognizer_LoadGrammarCompleted(object sender, LoadGrammarCompletedEventArgs e)  
    {  
      Console.WriteLine("Grammar loaded: " + e.Grammar.Name);  
    }  

    // Handle the SpeechRecognized event.  
    static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)  
    {  
      Console.WriteLine("Speech recognized: " + e.Result.Text);  
    }  
  }  
}  

Comentários

O SpeechRecognitionRejected evento é gerado pelas SpeechRecognizer classes e SpeechRecognitionEngine .

Os eventos SpeechRecognitionRejected são gerados por um mecanismo de reconhecimento de fala quando nenhuma das alternativas de uma operação de reconhecimento tem uma pontuação de confiança alta o suficiente para ser aceita. Informações detalhadas sobre frases rejeitadas estão disponíveis por meio da Result propriedade .

SpeechRecognitionRejectedEventArgs deriva de RecognitionEventArgs.

Confira também

• RecognitionEventArgs
• RecognitionResult
• SpeechRecognitionRejected
• SpeechRecognitionRejected
• SpeechRecognized
• SpeechRecognized
• SpeechRecognizedEventArgs
• SpeechHypothesized
• SpeechHypothesized
• SpeechHypothesizedEventArgs