examp24.m

ADSP TOOLBOX: Version 2.0 and gui m-files

clc,echo on 
%EXAMPLE 24 
nn=0:20;                          % DT index 
x=(0.8 .^ nn);h=(0.4 .^ nn);      % Signals x[n] and h[n] 
y=conv(x,h);                      % Convolution y[n] 
n=0:40;                           % DT index for convolution 
dtplot(n,y,'o'),pause(2)          % Plot convolution y
ya=(0.4 .^ n).*((2 .^(n+1))-1);   % Exact result 
plot(n,ya-y)                      % Plot error
echo off %end of example