ex3019.m

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

b=[1,0,-1];
a=[1,0,-0.81];
figure(1)
subplot(211)
dimpulse(b,a,50)
%
subplot(212)
dstep(b,a,50)
%
figure(2)
w=[0:1:500]*pi/500;
freqz(b,a,w);