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As far as I know Hanning window is defined as the following:

.5+.5*cos(2*pi*n/N) and n is between [-(N-1)/2,(N-1)/2] here N is odd number.

MATLAB functions "hanning" with symetric or periodic options or "hann" do not match with the results of the above formula. There is always a slight annoying difference !

Do you know the problem?

(Same thing for Hamming window)

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# Hanning window of MATLAB

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