RecognizedAudio.Duration Property

Gets the length of the audio input a recognition engine processed.

Namespace: Microsoft.Speech.Recognition
Assembly: Microsoft.Speech (in microsoft.speech.dll)

Syntax

'Declaration
Public ReadOnly Property Duration As TimeSpan

public TimeSpan Duration { get; }

public:
property TimeSpan Duration {
    TimeSpan get ();
}

/** @property */
public TimeSpan get_Duration ()

public function get Duration () : TimeSpan

Property Value

Returns a System.TimeSpan indicating the duration of the audio input.

Example

In the example below, an application first checks to see if the recognition operation has been emulated by determining if the RecognizedAudio object received is non null. If the RecognizedAudio object is non-null information about the recognized audio is written to a Windows.Forms.Label for display.

    if (result != null) { //Clear
    RecognizedAudio resultRecognizedAudio = result.Audio;
    if (resultRecognizedAudio == null) {
        label.Text += String.Format(
            "  Emulated input\n");
    } else {
        label.Text += String.Format(
        "  Candidate Phrase at:       {0} mSec\n" +
        "  Phrase Length:             {1} mSec\n" +
        "  Input State Time:          {2}\n" +
        "  Input Format:              {3}\n",
        resultRecognizedAudio.AudioPosition.TotalMilliseconds,
        resultRecognizedAudio.Duration.TotalMilliseconds,
        resultRecognizedAudio.StartTime.ToShortTimeString(),
        resultRecognizedAudio.Format.EncodingFormat.ToString());
    }

Thread Safety

All public static (Shared in Visual Basic) members of this type are thread-safe. Instance members are not guaranteed to be thread-safe.

Platforms

Development Platforms

Windows XP Professional with Service Pack 2 (SP2), Windows Server 2003, Windows Vista Ultimate Edition, Windows Vista Business Edition, Windows Vista Enterprise Edition

Target Platforms

See Also

Reference

RecognizedAudio Class
RecognizedAudio Members
Microsoft.Speech.Recognition Namespace
StartTime
RecognizedAudio Class
RecognizedAudio.AudioPosition Property