Hann function

Named after the Austrian meteorologist Julius von Hann.

Hann function

1. (signal processing ) A discrete window function, ${\displaystyle w(n)={\frac {1}{2}}\;\left(1-\cos \left({\frac {2\pi n}{N-1}}\right)\right)}${\displaystyle w(n)={\frac {1}{2}}\;\left(1-\cos \left({\frac {2\pi n}{N-1}}\right)\right)}, typically used to select a subset of a series of samples in order to perform a Fourier transform or other calculation.

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