Short Speech Code :)

Really need help I got finished all the code..but i wanted you to help me for understanding the two lines (the first steps)
this is a code of .. SPEECH to TEXT ..


This is the lines that i need you to explain to me
you need to add a SpSharedRecoContext object and create an ISpeechRecoGrammar object for it. Then Add a RecognitionHandler to it...

Add another Button and a TextBox to your form and create the objects there. Then add a handler to tie into the listeners Recognition event...
view sourceprint?


and this is all the quote code
private void btnListen_Click(object sender, EventArgs e)
{
// Speech Recognition Object
SpSharedRecoContext listener;
// Grammar object
ISpeechRecoGrammar grammar;
listener = new SpeechLib.SpSharedRecoContext();
listener.Recognition += new_ISpeechRecoContextEvents_RecognitionEventHandler (listener_Reco);
grammar = listener.CreateGrammar(0);
grammar.Dictationload("", SpeechLoadOption.SLOStatic);
grammar.DictationSetState(SpeechRuleState.SGDSActive);
}

public void listener_Reco(int StreamNumber, object StreamPosition, SpeechRecognitionType RecognitionType, ISpeechRecoResult Result)
{
string heard = Result.PhraseInfo.GetText(0, -1, true);
textBox1.Text += heard;
}