Hann function

English

Etymology

Named after the Austrian meteorologist Julius von Hann.

Noun

Hann function

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