DSP EXP 4A

DSP EXP NO. 4A

TITLE: TO FIND Z AND INVERSE Z TRANSFORM AND POLE ZERO PLOT OF Z TRANSFER FUNCTION

clc;

clear all;

close all;

n=sym('n','real');

x=2^n;

x1=ztrans(x);

disp('Z transform of first signal');

disp(x1);

b=[1];

a=[1 -2];

[z,p]=tf2zp(b,a);

subplot(3,1,1);

zplane(z,p);

x2=iztrans(x1);

disp('Inverse Z transform of first signal');

disp(x2);

x=(0.5)^n;

x1=ztrans(x);

disp('Z transform of second signal');

disp(x1);

b=[1];

a=[1 -0.5];

[z,p]=tf2zp(b,a);

subplot(3,1,2);

zplane(z,p);

x2=iztrans(x1);

disp('Inverse Z transform of second signal');

disp(x2);

x=(1+(0.2)^n*n);

x1=ztrans(x);

disp('Z transform of third signal');

disp(x1);

x2=iztrans(x1);

disp('Inverse Z transform of third signal');

disp(x2);