This option selects which window function the spectrum bar applies to audio prior to the FFT, to reduce spectral leakage. All functions are bell-shaped or triangular, except for the rectangular window.
|Blackman||higher-order generalized cosine|
|Blackman Harris||higher-order generalized cosine|
|Hamming||minimizes the nearest side lobe|
|Hann (AKA Hanning)||classic raised cosine|