Hamming Window
A windowing-function proposed by [see page 13, Richard W. Hamming].
It is visually identical to the von-hann-window in the time domain however it is noticeably [see page 14, different] in the frequency-domain. In the frequency domain there's noticeably less leakage into other frequencies.
\[ w_{Hm}[nT] =0.54 - 0.46 . cos(\frac{2.\pi.n}{N-1}) \]