내장 함수 mconvo를 사용해보자.

ex2_9.cem

% x(n)=[3,11,7,0,-1,4,2]; nx = [-3:3]
% h(n)=[2,3,0,-5,2,1]; nh = [-1:4]
% y(n)=conv(x,h)
x = [3, 11, 7, 0, -1, 4, 2]; nx = [-3: 3];
h = [2, 3, 0, -5, 2, 1]; nh = [-1: 4];
[y,ny] = mconvo(x,nx,h,nh)

y = 
 1 ~ 9 
         6	        31	        47	         6	       -51	        -5	        41	        18	       -22	
 10 ~ 12 
        -3	         8	         2	
ny = 
 1 ~ 9 
        -4	        -3	        -2	        -1	         0	         1	         2	         3	         4	
 10 ~ 12 
         5	         6	         7