SpeechRecognizer.AudioCaptureStateChanged Event

public:
event TypedEventHandler<SpeechRecognizer^ , SpeechRecognizerAudioCaptureStateChangedEventArgs^ >^ AudioCaptureStateChanged {
         EventRegistrationToken add (TypedEventHandler<SpeechRecognizer^ , SpeechRecognizerAudioCaptureStateChangedEventArgs^ >^ value);
         void remove (EventRegistrationToken token);
}