3.To study & analyze reconstruction of a sampled signal using MATLAB software.

EXPERIMENT NO - 3

clc;

clear all;

close all;

n=-20:50; 

x=cos(pi.*n./4);

subplot(2,1,1);

stem(x,'.k');

xlabel('TIME(S)');

ylabel('AMPLITUDE');

title('SAMPLING SIGNAL');

grid on

box on

T=1/1000; 

for i=1:2000; 

 t=(i-1)*T/100;

 h=sinc((t-n.*T)./T);

xr(i)=x*h.'; 

end

subplot(2,1,2);

plot(xr,'.r');

title('RECONSTRUCTED SIGNAL');

xlabel('TIME(S)');

ylabel('AMPLITUDE');

grid on

box on


  

WAVEFORM