% the main function of the project! % note: auread the sound file firstfunction y = main(x)x = normalize(x);x=x';x_padded = zero_pad(x);le=32;h=daubcqf(le,'min');L=7;[x_padded, L] = mdwt(x_padded, h, L);%load OTTFFL3_x = x_padded(1025:2048);  	% consider the 3rd octaveU = mean(abs(L3_x))/5;if(U >= .0010)  	% the number is 1, 4, or 5	L4_x = x_padded(513:813); 	% consider the first part of the 4th octave	s = find(abs(L4_x/5.3) > .005); 	S=length(s);	if(S >= 100)		y = 4;		elseif(S <= 80 & S >= 50)		y = 1;	elseif(S <= 35)		y = 5;	else		one_diff = normdiff(ONE,x_padded);	four_diff = normdiff(FOUR,x_padded);	five_diff = normdiff(FIVE,x_padded);	diff1 = [one_diff four_diff five_diff];	M = max(diff1);		if (M == one_diff)			y = 1;		elseif (M == four_diff);			y = 4;		else			y = 5;		end	endelse	 	% the number is 2 or 3	L2 = x_padded(2049:4096);	% look at the 2nd octave 	L2 = L2/abs(max(L2)); 	a = find(abs(L2) > .4);	A=length(a);	if(A >= 90)		y = 2;	elseif(A < 50)		y = 3;	else	two_diff = normdiff(TWO,x_padded);	three_diff = normdiff(THREE,x_padded);	diff2 = [two_diff three_diff];	M = max(diff2);		if (M == two_diff)			y = 2;		else 			y = 3;		end		endendfprintf('\n The number is   %d! \n\n', y)