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SpeechDetectedEventArgs Class

Returns data from the SpeechDetected event.

Namespace:  System.Speech.Recognition
Assembly:  System.Speech (in System.Speech.dll)
public class SpeechDetectedEventArgs : EventArgs

The SpeechDetected event is raised by the SpeechRecognizer and SpeechRecognitionEngine classes.

SpeechDetected events are generated when a recognition engine can identify input audio as human speech.

SpeechDetectedEventArgs derives from System.EventArgs.

In the example below, a handler is created for SpeechDetected() events which initializes a display every 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.DisplayAudioInputStatus(_audioDeviceStatusLabel, _recognizer.AudioStatus);
        Utils.DisplaySpeechDetected(_speechDetectedLabel, eventArgs.AudioPosition);
};
System.Object
  System.EventArgs
    System.Speech.Recognition.SpeechDetectedEventArgs
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0
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