a23.m

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

a=[1,-1,0.9];
b=1;
n=[-20:100];
x1=impseq(0,-20,100);
h=filter(b,a,x1);
subplot(211);
stem(n,h)
x2=stepseq(0,-20,100);
s=filter(b,a,x2);
subplot(212);
stem(n,s)