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RecognizedAudio.AudioPosition Property

  • Reference

Definition

Namespace:
System.Speech.Recognition
Assembly:
System.Speech.dll
Package:
System.Speech v8.0.0
Package:
System.Speech v9.0.0-rc.2.24473.5
Source:
RecognizedAudio.cs
Source:
RecognizedAudio.cs
Source:
RecognizedAudio.cs

Gets the location in the input audio stream for the start of the recognized audio.

public:
 property TimeSpan AudioPosition { TimeSpan get(); };
public TimeSpan AudioPosition { get; }
member this.AudioPosition : TimeSpan
Public ReadOnly Property AudioPosition As TimeSpan

Property Value

TimeSpan

The location in the input audio stream for the start of the recognized audio.

Examples

The following example handles the SpeechRecognitionEngine.SpeechRecognized or SpeechRecognizer.SpeechRecognized event and outputs to the console information about the recognized audio that is associated with the recognition result.

// Handle the SpeechRecognized event.   
void SpeechRecognizedHandler(object sender, SpeechRecognizedEventArgs e)  
{  
  if (e.Result == null) return;  

  RecognitionResult result = e.Result;  

  Console.WriteLine("Grammar({0}): {1}",  
    result.Grammar.Name, result.Text);  

  if (e.Result.Audio != null)  
  {  
    RecognizedAudio audio = e.Result.Audio;  

    Console.WriteLine("   start time: {0}", audio.StartTime);  
    Console.WriteLine("   encoding format: {0}", audio.Format.EncodingFormat);  
    Console.WriteLine("   position: {0}, duration: {1}",  
      audio.AudioPosition, audio.Duration);  
  }  

  // Add event handler code here.  
}

Remarks

This property references the position at the beginning of the recognized phrase in the input device's generated audio stream. By contrast, the RecognizerAudioPosition property of the SpeechRecognitionEngine and SpeechRecognizer classes reference the recognizer's position within its audio input. These positions can be different. For more information, see Using Speech Recognition Events.

The StartTime property gets the system time at the start of the recognition operation.

Applies to

See also