RecognizedAudio Class

Reference

Definition

Namespace:: System.Speech.Recognition

Assembly:: System.Speech.dll

Package:: System.Speech v9.0.0

Source:: RecognizedAudio.cs

Source:: RecognizedAudio.cs

Source:: RecognizedAudio.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Represents audio input that is associated with a RecognitionResult.

public ref class RecognizedAudio

public class RecognizedAudio

[System.Serializable]
public class RecognizedAudio

type RecognizedAudio = class

[<System.Serializable>]
type RecognizedAudio = class

Public Class RecognizedAudio

Inheritance: Object
RecognizedAudio

Attributes: SerializableAttribute

Examples

The following example handles the SpeechRecognitionEngine.SpeechRecognized, SpeechRecognizer.SpeechRecognized, or Grammar.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

A speech recognizer generates information about the audio input as part of the recognition operation. To access the recognized audio, use the Audio property or the GetAudioForWordRange method of the RecognitionResult.

A recognition result can be produced by the following events and methods of the SpeechRecognizer and SpeechRecognitionEngine classes:

Important

A recognition result produced by emulated speech recognition does not contain recognized audio. For such a recognition result, its Audio property returns null and its GetAudioForWordRange method throws an exception. For more information about emulated speech recognition, see the EmulateRecognize and EmulateRecognizeAsync methods of the SpeechRecognizer and SpeechRecognitionEngine classes.

Properties

AudioPosition	Gets the location in the input audio stream for the start of the recognized audio.
Duration	Gets the duration of the input audio stream for the recognized audio.
Format	Gets the format of the audio processed by a recognition engine.
StartTime	Gets the system time at the start of the recognition operation.

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetRange(TimeSpan, TimeSpan)	Selects and returns a section of the current recognized audio as binary data.
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)
WriteToAudioStream(Stream)	Writes the entire audio to a stream as raw data.
WriteToWaveStream(Stream)	Writes audio to a stream in Wave format.

Applies to

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