ex3006.m

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

a=[1,-1,0.9];b=1;
x=impseq(0,-20,120);n=[-20:120];
h=filter(b,a,x);
subplot(211)
stem(n,h);
axis([-20,120,-1.1,1.1])
%
x=stepseq(0,-20,120);
s=filter(b,a,x);
subplot(212)
stem(n,s);
axis([-20,120,-0.5,2.5])