通过

SpeechRecognitionEngine.SetInputToWaveFile(String) 方法

  • 参考

定义

命名空间:
System.Speech.Recognition
程序集:
System.Speech.dll
包:
System.Speech v8.0.0
包:
System.Speech v9.0.0-rc.2.24473.5
Source:
SpeechRecognitionEngine.cs
Source:
SpeechRecognitionEngine.cs

配置 SpeechRecognitionEngine 对象以接收从波形音频格式 (.wav) 文件的输入。

public:
 void SetInputToWaveFile(System::String ^ path);
public void SetInputToWaveFile (string path);
member this.SetInputToWaveFile : string -> unit
Public Sub SetInputToWaveFile (path As String)

参数

path
String

要作为输入的文件的路径。

示例

以下示例对 .wav 文件中的音频执行识别，并将识别的文本写入控制台。

using System;  
using System.IO;  
using System.Speech.Recognition;  
using System.Speech.AudioFormat;  

namespace SampleRecognition  
{  
  class Program  
  {  
    static bool completed;  

    static void Main(string[] args)  

    // Initialize an in-process speech recognition engine.  
    {  
      using (SpeechRecognitionEngine recognizer =  
         new SpeechRecognitionEngine())  
      {  

        // Create and load a grammar.  
        Grammar dictation = new DictationGrammar();  
        dictation.Name = "Dictation Grammar";  

        recognizer.LoadGrammar(dictation);  

        // Configure the input to the recognizer.  
recognizer.SetInputToWaveFile(@"c:\temp\SampleWAVInput.wav");  

        // Attach event handlers for the results of recognition.  
        recognizer.SpeechRecognized +=   
          new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);  
        recognizer.RecognizeCompleted +=   
          new EventHandler<RecognizeCompletedEventArgs>(recognizer_RecognizeCompleted);  

        // Perform recognition on the entire file.  
        Console.WriteLine("Starting asynchronous recognition...");  
        completed = false;  
        recognizer.RecognizeAsync();  

        // Keep the console window open.  
        while (!completed)  
        {  
          Console.ReadLine();  
        }  
        Console.WriteLine("Done.");  
      }  

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

    // Handle the SpeechRecognized event.  
    static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)  
    {  
      if (e.Result != null && e.Result.Text != null)  
      {  
        Console.WriteLine("  Recognized text =  {0}", e.Result.Text);  
      }  
      else  
      {  
        Console.WriteLine("  Recognized text not available.");  
      }  
    }  

    // Handle the RecognizeCompleted event.  
    static void recognizer_RecognizeCompleted(object sender, RecognizeCompletedEventArgs e)  
    {  
      if (e.Error != null)  
      {  
        Console.WriteLine("  Error encountered, {0}: {1}",  
        e.Error.GetType().Name, e.Error.Message);  
      }  
      if (e.Cancelled)  
      {  
        Console.WriteLine("  Operation cancelled.");  
      }  
      if (e.InputStreamEnded)  
      {  
        Console.WriteLine("  End of stream encountered.");  
      }  
      completed = true;  
    }  
  }  
}

注解

如果识别器在识别操作期间到达输入文件的末尾，则识别操作以可用输入结束。 除非将输入更新到识别器，否则任何后续识别操作都可能会生成异常。

适用于

另请参阅