SpeechRecognizer State Property (SAPI 5.4)

Speech API 5.4
Microsoft Speech API 5.4

Interface: ISpeechRecognizer

State Property

The State property returns the current state of the recognition engine.

The recognition engine may be in one of several states of audio processing. If active, the engine receives audio data and processes it. Likewise, if inactive, neither audio data nor additional processing takes place. See the enumeration SpeechRecognizerState for complete details of the states.


Set: SpeechRecognizer.State = SpeechRecognizerState
Get: SpeechRecognizerState = SpeechRecognizer.State


The owning object.
Set: A SpeechRecognizerState variable that sets the property.
Get: A SpeechRecognizerState variable that gets the property.


This code example demonstrates the State property. After creating an instance for a recognizer, the code retrieves and then changes the processing state of the recognizer.

To run this code, create a form with no controls. Paste this code into the Declarations section of the form.

Option Explicit

Private Sub Form_Load()
    On Error GoTo EH

    Dim RC As SpSharedRecoContext
    Dim T As String

    Set RC = New SpSharedRecoContext

    With RC.Recognizer
        If .State = SRSActive Then
            .State = SRSInactive
            T = "Recognition engine's state has been" & vbNewLine
            T = T & "changed from SRSActive to SRSInactive."
        End If
    End With

    MsgBox T, vbInformation

    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 Sub
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