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SpeechDetectedEventArgs.AudioPosition Property

Gets the position in the audio stream where speech was detected.

Namespace:  System.Speech.Recognition
Assembly:  System.Speech (in System.Speech.dll)

public TimeSpan AudioPosition { get; }

Property Value

Type: System.TimeSpan
Returns the location of a detected phrase within a recognition engine’s speech buffer.

The example below creates a handler for SpeechRecognizer.SpeechDetected or SpeechRecognitionEngine.SpeechDetected events. The handler initializes a display each time speech is detected and displays status information, including audio position.

_recognizer.SpeechDetected +=
  delegate(object sender, SpeechDetectedEventArgs eventArgs) 
  {

    // Clear previous recognition information.
    _audioDeviceStatusLabel.Enabled = true;
    _audioDeviceStatusLabel.Visible = true;
    Utils.DisplayAudioInputFormat(_audioStateLabel, _recognizer);
    Utils.DisplayRecognizerState(_recognizerStateLabel, _recognizer.State);
    Utils.DisplaySpeechDetected(_speechDetectedLabel, eventArgs.AudioPosition);
  };

.NET Framework

Supported in: 4.5.3, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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