SpeechRecognitionEngine.SpeechRecognitionRejected SpeechRecognitionEngine.SpeechRecognitionRejected SpeechRecognitionEngine.SpeechRecognitionRejected SpeechRecognitionEngine.SpeechRecognitionRejected Event

定義

SpeechRecognitionEngine が読み込み済みで有効な Grammar オブジェクトのどのリストにも一致しない入力を受け取ると、発生します。Raised when the SpeechRecognitionEngine receives input that does not match any of its loaded and enabled Grammar objects.

public:
 event EventHandler<System::Speech::Recognition::SpeechRecognitionRejectedEventArgs ^> ^ SpeechRecognitionRejected;
public event EventHandler<System.Speech.Recognition.SpeechRecognitionRejectedEventArgs> SpeechRecognitionRejected;
member this.SpeechRecognitionRejected : EventHandler<System.Speech.Recognition.SpeechRecognitionRejectedEventArgs> 
Public Event SpeechRecognitionRejected As EventHandler(Of SpeechRecognitionRejectedEventArgs) 

次の例では、「ジャズ カテゴリ アーティストの一覧の表示」や「絶対的のアルバムを表示する」などの語句を認識します。The following example recognizes phrases such as "Display the list of artists in the jazz category" or "Display albums gospel". 例では、ハンドラーを使用して、 SpeechRecognitionRejected 、音声入力のための十分な文法の内容に一致することはできません、コンソールの通知を表示するイベントConfidenceを認識します。The example uses a handler for the SpeechRecognitionRejected event to display a notification in the console when the speech input cannot be matched to the contents of the grammar with sufficient Confidence to produce a successful recognition. ハンドラーでは、認識結果も表示されますAlternatesが確信度の低いスコアにより拒否されました。The handler also displays recognition result Alternates that were rejected because of low confidence scores.

using System;  
using System.Speech.Recognition;  

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

    // Initialize an in-process speech recognition engine.  
    {  
      using (SpeechRecognitionEngine recognizer =  
         new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US")))  
      {  

        // 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);  

        // Set the input to the recognizer.  
        recognizer.SetInputToDefaultAudioDevice();  

        // Start recognition.  
        recognizer.RecognizeAsync(RecognizeMode.Multiple);  

        // 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);  
      Console.WriteLine("  Confidence score: " + e.Result.Confidence);  
    }  
  }  
}  

注釈

入力が一致しないことに十分な確実性が読み込み済みで有効になっているのいずれかを判断した場合、認識エンジンはこのイベントを発生させます。Grammarオブジェクト。The recognizer raises this event if it determines that input does not match with sufficient confidence any of its loaded and enabled Grammar objects. Resultのプロパティ、 SpeechRecognitionRejectedEventArgs 、拒否されたを含むRecognitionResultオブジェクト。The Result property of the SpeechRecognitionRejectedEventArgs contains the rejected RecognitionResult object. ハンドラーを使用して、SpeechRecognitionRejected認識を取得するイベントAlternatesが拒否されたとそのConfidenceスコア。You can use the handler for the SpeechRecognitionRejected event to retrieve recognition Alternates that were rejected and their Confidence scores.

アプリケーションが使用されている場合、SpeechRecognitionEngineインスタンス、入力の承諾または拒否のいずれかでどの音声では、信頼レベルを変更することができます、UpdateRecognizerSettingメソッド。If your application is using a SpeechRecognitionEngine instance, you can modify the confidence level at which speech input is accepted or rejected with one of the UpdateRecognizerSetting methods. 音声認識が非音声を使用して入力に応答する方法を変更することができます、 BabbleTimeoutInitialSilenceTimeoutEndSilenceTimeout、およびEndSilenceTimeoutAmbiguousプロパティ。You can modify how the speech recognition responds to non-speech input using the BabbleTimeout, InitialSilenceTimeout, EndSilenceTimeout, and EndSilenceTimeoutAmbiguous properties.

SpeechRecognitionRejected デリゲートを作成する場合は、イベントを処理するメソッドを指定します。When you create a SpeechRecognitionRejected delegate, you identify the method that will handle the event. イベントをイベント ハンドラーに関連付けるには、デリゲートのインスタンスをイベントに追加します。To associate the event with your event handler, add an instance of the delegate to the event. デリゲートを削除しない限り、そのイベントが発生すると常にイベント ハンドラーが呼び出されます。The event handler is called whenever the event occurs, unless you remove the delegate. イベント ハンドラー デリゲートの詳細については、次を参照してください。イベントとデリゲートします。For more information about event-handler delegates, see Events and Delegates.

適用対象

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