convolution.m

% A GENERALAZED CONVOLUTION COMPUTING CODE IN MATLAB WITHOUT USING MATLAB BUILTIN FUNCTION conv(x,h)
close all
clear all
x=input('Enter x:   ')
h=input('Enter h:   ')
m=length(x);
n=length(h);
X=[x,zeros(1,n)]; 
H=[h,zeros(1,m)]; 
for i=1:n+m-1
Y(i)=0;
for j=1:m
if(i-j+1>0)
Y(i)=Y(i)+X(j)*H(i-j+1);
else
end
end
end
Y
stem(Y);
ylabel('Y[n]');
xlabel('----->n');
title('Convolution of Two Signals without conv function');