float s_isSoundDetected;
float s_isSoundDetectedPrev;
float s_LedStatus;
float s_LedStatusPrev;

void setup() {
	//put your setup code here, to run once:
	pinMode(8, INPUT);
	pinMode(9, OUTPUT);
	pinMode(13, OUTPUT);
	
	
	s_isSoundDetected = 0;
	s_isSoundDetectedPrev = 0;
	s_LedStatus = 0;
	s_LedStatusPrev = 0;
}

void loop() {
	//put your main code here, to run repeatedly:
	
	
	if(digitalRead(8)) {
		s_isSoundDetected = 0;
	}
	else {
		s_isSoundDetected = 1;
	}
	if(((s_isSoundDetectedPrev == 0) && (s_isSoundDetected == 1))) {
		if((s_LedStatus == 0)) {
			s_LedStatus = 1;
		}
		else {
			s_LedStatus = 0;
		}
	}
	if((s_LedStatus == s_LedStatusPrev)) {
	}
	else {
		if((s_LedStatus == 0)) {
			digitalWrite(9, false);
			digitalWrite(13, false);
		}
		else {
			digitalWrite(9, true);
			digitalWrite(13, true);
		}
	}
	s_isSoundDetectedPrev = s_isSoundDetected;
	s_LedStatusPrev = s_LedStatus;
}