//Beat Detection, VU Meter Visualization
int x, y;				//variables to access the sound data arrays 
int basscounter = 0;	//a counter to keep track of increasing value of sound data
int wavegap = 0;		//difference between previous sound and current 
for (y = 0; y < 2; y ++)	
{							
	int last=this_mod->waveformData[y][0];	//gets the first sound sample
	for (x = 1; x < 576; x ++)				//go through each sample 
	{										
		last = this_mod->waveformData[y][x];	//update sound sample 
		//calculate gap between previous sound sample and current	
		wavegap = abs(this_mod->waveformData[0][x]^128)+abs(this_mod->waveformData[1][x]^128)+1;
		//if the difference between the last played wave and current wave is big enough
		//increment basscounter
		if (wavegap > 383)
			basscounter++;
	}
	//if enough bass potential played, redraw the face
	if (basscounter > 31)
		//do changes to the visualization once there is enough bass change in the music 
	//if enough bass potential played, redraw the eyebrows
	if (basscounter > 71)
		//some more changes that would occur less often 
	if (y) {
		//if VU meter (y=1)
		//do changes 
	}
	else {
		//if not
		//do other changes
	}