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StartTime Property
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RecognizedAudio.StartTime Property

Gets the system time at the start of the recognition operation.

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

public DateTime StartTime { get; }

Property Value

Type: System.DateTime
The system time at the start of the recognition operation.

The StartTime property gets the system time at the start of the recognition operation, which can be useful for latency and performance calculations.

The AudioPosition property gets the location in the input device's generated audio stream.

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.
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4
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