Question

Is it acceptable to use MATLAB's convolution function for this problem or are we supposed to implement convolution ourselves?

Answer 1

We can use in-built function for convolution such as conv(x,h).

Or we can implement ourselves by writing the code.

MATLAB CODE:

x = input('Enter x: ');
h = input('Enter h: ') ;
Ni = length(x);
Nh = length(h);
y = zeros(1,Ni+Nh);
t = zeros(1,Nh);
for i = 1:Ni+Nh-1
if i<=Ni
t(1)= x(i);
for j = 1:Nh
y(i) = y(i) + h(j)*t(j);
end

for k = Nh:-1:2
t(k) = t(k-1);
end

else
t(1)= 0;
for j = 1:Nh
y(i) = y(i) + (h(j)*t(j));
end

for k = Nh:-1:2
t(k) = t(k-1);
end

end

end

stem(y);