EXPERIMENT 13
Aim : To determine the frequency response of discrete LTI systems:
1. FIR
2. IIR
Software Used: Matlab Mathworks R2016a.
Program:
k=input('number of frequency points=');
num=input('numerator coefficients=');
den=input('denominator coefficients=');
w=0:pi/(k-1):pi;
h=freqz(num,den,w);
subplot(2,2,1);
stem(w/pi,abs(h));grid
title('magnitude spectrum');
xlabel('\omega/\pi');
ylabel('magnitude');
subplot(2,1,2)
plot(w/pi,angle(h));grid
title('phase spectrum');
xlabel('\omega/\pi');
ylabel('phase,radians');
OUTPUT 1 :
OUTPUT 2:
