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SpeechRecognizer AudioInput Property (SAPI 5.3)

Speech API 5.3
Microsoft Speech API 5.3

Interface: ISpeechRecognizer

AudioInput Property


The AudioInput property gets and sets the recognizer's audio input device.


Syntax

Set: SpeechRecognizer.AudioInput = SpObjectToken
Get: SpObjectToken = SpeechRecognizer.AudioInput

Parts

SpeechRecognizer
The owning object.
SpObjectToken
Set: An SpObjectToken object that sets the property. If this parameter is Nothing, the default audio input device will be used.
Get: An SpObjectToken object that sets the property.

Example

The following Visual Basic form code demonstrates the use of the AudioInput property. The code displays the default audio input device. It then sets the recognizer's AudioInput property to Nothing and shows the results. Finally, the procedure lists the names of all available audio input devices.

To run this code, paste it into the Declarations section of a form that contains no controls.


Option Explicit

Dim R As SpeechLib.SpSharedRecognizer
Dim T As SpeechLib.SpObjectToken

Private Sub Form_Load()
    On Error GoTo EH

    Set R = New SpSharedRecognizer

    Debug.Print "New SpSharedRecognizer"
    Debug.Print "   AudioInput: " & R.AudioInput.GetDescription
    Debug.Print

    Set R.AudioInput = Nothing

    Debug.Print "Set to Nothing"
    Debug.Print "   AudioInput: " & R.AudioInput.GetDescription
    Debug.Print

    Debug.Print "Show all available inputs"
    For Each T In R.GetAudioInputs
        Debug.Print "   AudioInput: " & T.GetDescription
    Next

    End

EH:
    If Err.Number Then ShowErrMsg
End Sub

Private Sub ShowErrMsg()

    ' Declare identifiers:
    Dim T As String

    T = "Desc: " & Err.Description & vbNewLine
    T = T & "Err #: " & Err.Number
    MsgBox T, vbExclamation, "Run-Time Error"
    End

End Sub
Show:
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