A c #3.0-based general class developed based on Vista Speech Recognition

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Using system;
Using system. Collections. Generic;
Using system. LINQ;
Using system. text;
Using system. speech;
Using system. Speech. synthesis;
Using system. Speech. recognition;
Using system. Globalization;
Using system. Windows. forms;

Namespaces yincheng01@163.com
{
Public class yuyin
{
Public speechrecognitionengine recognizer = NULL;
Public dictationgrammar = NULL;
Public System. Windows. Forms. Control cdisplay;

Public yuyin (string [] FG) // create a key word list
{

cultureinfo myciintl = new cultureinfo ("ZH-CN", false);

foreach (recognizerinfo config in speechrecognitionengine. installedrecognizers () // obtain all voice engines
{< br> If (config. culture. equals (myciintl) & config. id = "MS-2052-80-DESK") // select Chinese
{< br> recognizer = new speechrecognitionengine (config);
break;
}

}< br> If (recognizer! = NULL)
{

Initializespeechrecognitionengine (FG );
Dictationgrammar = new dictationgrammar ();
}
Else
{
MessageBox. Show ("failed to create speech recognition ");

}

}

Private void initializespeechrecognitionengine (string [] FG)
{
Recognizer. setinputtodefaauaudiodevice ();
Grammar customgrammar = createcustomgrammar (FG );
Recognizer. unloadallgrammars ();
Recognizer. loadgrammar (customgrammar );
Recognizer. speechrecognized + = new eventhandler <speechrecognizedeventargs> (recognizer_speechrecognized );
Recognizer. speechhypothesized + = new eventhandler <speechhypothesizedeventargs> (recognizer_speechhypothesized );
}
Public void beginrec (control tbresult) // associate the window control
{

Turnspeechrecognitionon ();
Turndictationon ();
Cdisplay = tbresult;
}
Public void over ()
{

Turnspeechrecognitionoff ();

}
Public Virtual grammar createcustomgrammar (string [] FG)
{
Grammarbuilder = new grammarbuilder ();
Grammarbuilder. append (new choices (FG ));
Return new grammar (grammarbuilder );
}

Private void turnspeechrecognitionon ()
{
If (recognizer! = NULL)
{
Recognizer. recognizeasync (recognizemode. Multiple );
}
Else
{
MessageBox. Show ("failed to create speech recognition ");

}

}

Private void turnspeechrecognitionoff ()
{
If (recognizer! = NULL)
{
Recognizer. recognizeasyncstop ();

Turndictationoff ();
}
Else
{
MessageBox. Show ("failed to create speech recognition ");

}

}
Private void recognizer_speechhypothesized (Object sender, speechhypothesizedeventargs E)
{

}

Private void recognizer_speechrecognized (Object sender, speechrecognizedeventargs E)
{
String text = E. Result. text;
Cdisplay. Text = text;

}
Private void turndictationon ()
{
If (recognizer! = NULL)
{
Recognizer. loadgrammar (dictationgrammar );
}
Else
{
MessageBox. Show ("failed to create speech recognition ");

}

}

Private void turndictationoff ()
{
If (dictationgrammar! = NULL)
{
Recognizer. unloadgrammar (dictationgrammar );
}
Else
{
MessageBox. Show ("failed to create speech recognition ");

}
}

}
}

 

Class call

String [] fg = {"East", "West", "South", "North "};
Qqq = new yuyin (FG );

Qqq. beginrec (textbox10); controls for displaying recognized information

 

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