ex3004.m

the file contain many matlab signal source code and many example .

n=-5:50;
u1=stepseq(0,-5,50);
u2=stepseq(10,-5,50);
x=u1-u2;
h=((0.9).^n).*u1;
subplot(311)
stem(n,x);
axis([-5,50,0,2])
subplot(312)
stem(n,h);
axis([-5,50,0,2])
[y,ny]=conv_m(x,n,h,n);
subplot(313)
stem(ny,y);
axis([-5,50,0,8])