Hi,
I successfully got two deltas on 4/10 and on 2/10, but I cannot center the graph.
Could you help me?
t = 0:(1/fs):(10-1/fs);S = 2*cos(3*pi*t/10).*cos(pi*t/10); %cos(4pit/10)+cos(2pit/10)
n = length(S);X = fft(S);f = (0:n-1)*(fs/n)*2; %multiply by pi*2, leave the pi aside
f80 = (0:n-1);power = abs(X).^2/n; stem(f,power) Y = fftshift(X)fshift = (-n/2:n/2-1)*(fs/n)powershift = abs(Y).^2/n;plot(fshift,powershift)
I attached pictures. In the second graph those are not even deltas.
Best Answer