%% L06_IIR
%% ==============
%% Script to analyze IIR filters
%%
%% Created  : 28 July 2005
%% Modified : 28 July 2005
%%
%% Copyright (c) 2005 Salman Durrani .
%% ------------------------------------------------------------

clc
clear all

%% IIR Filter
%% change the vlaue of a1 to see effect on IIR filter stability
a1=0.5;
num=[1];
den=[1 a1];

%% pole-zero plot
figure
zplane(num,den)

%% impulse response
figure
impz(num,den)
grid on

%% step response
figure
stepz(num,den)
grid on