matlab program

1. Electronics and Communication Engineering
An OEP report
On
“write a MATLAB program of expansion and compression of
signal”
Submitted by
Marmik Kothari (140410111027)

2. close all;
clc;
k=2;
x1=[1 2 3 4 5];
a=length(x1);
n=0:1:a-1;
subplot(3,1,1);
stem(x1);
xlabel('number of samples');
ylabel('amplitude');
title('input signal');
x2=k*x1;
subplot(3,1,2);
stem(x2);
xlabel('number of samples');
ylabel('amplitude');
title('compresion signal');
x3=x1/k;
subplot(3,1,3);
stem(x3);
xlabel('number of samples');
ylabel('amplitude');
title('expansion signal');
display(x1);
display(x2);
display(x3);

3. OUTPUT: