SpeechRecognizer.SpeechHypothesized 事件

定义

命名空间:

System.Speech.Recognition

程序集:

System.Speech.dll

包:

System.Speech v9.0.0-rc.2.24473.5

Source:

SpeechRecognizer.cs

当识别器已识别可以为语法中多个完整的短语的组件的一个字或多个字时发生。

public:
 event EventHandler<System::Speech::Recognition::SpeechHypothesizedEventArgs ^> ^ SpeechHypothesized;

public event EventHandler<System.Speech.Recognition.SpeechHypothesizedEventArgs> SpeechHypothesized;

member this.SpeechHypothesized : EventHandler<System.Speech.Recognition.SpeechHypothesizedEventArgs> 

Public Custom Event SpeechHypothesized As EventHandler(Of SpeechHypothesizedEventArgs) 

事件类型

EventHandler<SpeechHypothesizedEventArgs>

示例

以下示例识别“显示爵士乐类别中的艺术家列表”等短语。 该示例使用 SpeechHypothesized 事件在控制台中显示识别不完整的短语片段。

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 the list of");  
        mediaMenu.Append(listTypes);  
        mediaMenu.Append("in the");  
        mediaMenu.Append(genres);  
        mediaMenu.Append("category.");  

        //  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.SpeechHypothesized +=   
          new EventHandler<SpeechHypothesizedEventArgs>(recognizer_SpeechHypothesized);  

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

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

    // Handle the SpeechHypothesized event.  
    static void recognizer_SpeechHypothesized(object sender, SpeechHypothesizedEventArgs e)  
    {  
      Console.WriteLine("Speech hypothesized: " + e.Result.Text);  
    }  

    // 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);  
    }  
  }  
}  

注解

当输入不明确时，共享识别器可能会引发此事件。 例如，对于支持识别“新游戏请”或“新游戏”的语音识别语法，“新游戏请”是明确的输入，“新游戏”是一个不明确的输入。

为 SpeechHypothesized 事件创建委托时，可以标识将处理该事件的方法。 若要将事件与事件处理程序关联，请将该委托的一个实例添加到事件中。 除非移除了该委托，否则每当发生该事件时就会调用事件处理程序。 有关事件处理程序委托的详细信息，请参阅 事件和委托。

另请参阅

• SpeechHypothesizedEventArgs
• SpeechDetected
• SpeechRecognitionRejected
• SpeechRecognized