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AudioSignalProblem Enumeration

Contains a list of possible problems in the audio signal coming in to a speech recognition engine.

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

public enum AudioSignalProblem

Member nameDescription
NoneNo problems with audio input.
TooNoisyAudio input has too much background noise.
NoSignalAudio input is not detected.
TooLoudAudio input is too loud.
TooSoftAudio input is too quiet.
TooFastAudio input is too fast.
TooSlowAudio input is too slow.

The AudioSignalProblem property of the AudioSignalProblemOccurredEventArgs class gets a member of this enumeration when the SpeechRecognitionEngine or SpeechRecognizer raises a AudioSignalProblemOccurred event.

The following example defines an event handler that gathers information about an AudioSignalProblemOccurred event.


private SpeechRecognitionEngine sre;

// Initialize the speech recognition engine.
private void Initialize()
{
  sre = new SpeechRecognitionEngine();

  // Add a handler for the AudioSignalProblemOccurred event.
  sre.AudioSignalProblemOccurred += new EventHandler<AudioSignalProblemOccurredEventArgs>(sre_AudioSignalProblemOccurred);
}

// Gather information when the AudioSignalProblemOccurred event is raised.
void sre_AudioSignalProblemOccurred(object sender, AudioSignalProblemOccurredEventArgs e)
{
  StringBuilder details = new StringBuilder();

  details.AppendLine("Audio signal problem information:");
  details.AppendFormat(
    " Audio level:               {0}" + Environment.NewLine +
    " Audio position:            {1}" + Environment.NewLine +
    " Audio signal problem:      {2}" + Environment.NewLine +
    " Recognition engine audio position: {3}" + Environment.NewLine,
    e.AudioLevel, e.AudioPosition, e.AudioSignalProblem,
    e.recoEngineAudioPosition);

  // Insert additional event handler code here.
}

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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