I was confused by Hamming Windows and Hanning Windows. At first I though Hanning was a typo for Hamming, but no, they are both similar but slightly different things, named after different people.
These two similarly-named Hamming and Hanning (more properly referred to as Hann) window functions both have a sinusoidal shape. The difference between them is that the Hanning window touches zero at both ends, removing any discontinuity. The Hamming window stops just shy of zero, meaning that the signal will still have a slight discontinuity.
https://www.tek.com/blog/window-functions-spectrum-analyzers
Hamming and Hanning
These two similarly-named Hamming and Hanning (more properly referred to as Hann) window functions both have a sinusoidal shape. The difference between them is that the Hanning window touches zero at both ends, removing any discontinuity. The Hamming window stops just shy of zero, meaning that the signal will still have a slight discontinuity.
https://www.tek.com/-/media/sites/default/files/u811871/hamm...