hann-window
There are 2 repositories under hann-window topic.
hukenovs/blackman_harris_win
Blackman-Harris Window functions (3-, 5-, 7-term etc.) from 1K to 64M points based only on LUTs and DSP48s FPGA resources. Main core - CORDIC like as DDS (sine / cosine generator)
kettro/TSWiFT
Tree Sliding Window Fourier Transform, in Clojure