Hann function

English

Etymology

Named after the Austrian meteorologist Julius von Hann.

Noun

Hann function

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