SpeechRecognitionEngine.AudioPosition Properti

Definisi

Ruang nama:

System.Speech.Recognition

Rakitan:

System.Speech.dll

Paket:

System.Speech v9.0.0-rc.2.24473.5

Sumber:

SpeechRecognitionEngine.cs

Mendapatkan lokasi saat ini di aliran audio yang dihasilkan oleh perangkat yang memberikan input ke SpeechRecognitionEngine.

public:
 property TimeSpan AudioPosition { TimeSpan get(); };

public TimeSpan AudioPosition { get; }

member this.AudioPosition : TimeSpan

Public ReadOnly Property AudioPosition As TimeSpan

Nilai Properti

TimeSpan

Lokasi saat ini dalam aliran audio yang dihasilkan oleh perangkat input.

Contoh

Dalam contoh berikut, pengenal ucapan dalam proses menggunakan tata bahasa dikte untuk mencocokkan input ucapan. Handler untuk SpeechDetected peristiwa menulis ke konsol AudioPosition, , RecognizerAudioPositiondan AudioLevel ketika pengenal ucapan mendeteksi ucapan pada inputnya.

using System;  
using System.Speech.Recognition;  

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

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

        // Create a grammar for finding services in different cities.  
        Choices services = new Choices(new string[] { "restaurants", "hotels", "gas stations" });  
        Choices cities = new Choices(new string[] { "Seattle", "Boston", "Dallas" });  

        GrammarBuilder findServices = new GrammarBuilder("Find");  
        findServices.Append(services);  
        findServices.Append("near");  
        findServices.Append(cities);  

        // Create a Grammar object from the GrammarBuilder and load it to the recognizer.  
        Grammar servicesGrammar = new Grammar(findServices);  
        recognizer.LoadGrammarAsync(servicesGrammar);  

        // Add handlers for events.  
        recognizer.SpeechRecognized +=  
          new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);  
        recognizer.SpeechDetected +=  
          new EventHandler<SpeechDetectedEventArgs>(recognizer_SpeechDetected);  

        // Start asynchronous recognition.  
        recognizer.RecognizeAsync();  
        Console.WriteLine("Starting asynchronous recognition...");  

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

    // Gather information about detected speech and write it to the console.  
    static void recognizer_SpeechDetected(object sender, SpeechDetectedEventArgs e)  
    {  
      Console.WriteLine();  
      Console.WriteLine("Speech detected:");  
      Console.WriteLine("  Audio level: " + recognizer.AudioLevel);  
      Console.WriteLine("  Audio position at the event: " + e.AudioPosition);  
      Console.WriteLine("  Current audio position: " + recognizer.AudioPosition);  
      Console.WriteLine("  Current recognizer audio position: " +   
        recognizer.RecognizerAudioPosition);  
    }  

    // Write the text of the recognition result to the console.  
    static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)  
    {  
      Console.WriteLine("\nSpeech recognized: " + e.Result.Text);  

      // Add event handler code here.  
    }  
  }  
}  

Keterangan

Properti AudioPosition mereferensikan posisi perangkat input dalam aliran audio yang dihasilkan. Sebaliknya, properti mereferensikan RecognizerAudioPosition posisi pengenal dalam input audionya. Posisi ini bisa berbeda. Misalnya, jika recognizer telah menerima input yang belum menghasilkan hasil pengenalan RecognizerAudioPosition , maka nilai properti kurang dari nilai AudioPosition properti .

Lihat juga

• RecognizerAudioPosition
• AudioPosition