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Convolution of two signals

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Diogo Costa
Diogo Costa 2020-12-7
Hello, can anyone explain me this part of the code, i don't understand very well when starts the for
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

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