### Piotr Grochowski (@PiotrGrochowski)

A fast fourier transform works in complex numbers, and each sine or cosine wave is a composition of two complex waves. For instance the two complex waves (1, i,...

A rectangular windowing isn't infinite response though. A rectangular windowing filter only passes through a specific range of time by truncating it, filtering out...

A rectangular window is indeed a windowing filter, because it still filters a particular section of time,

I would rather think of it the opposite way. A symmetric window is equivalent to an off-by-one error in a periodic window.

I haven't said I am using triangular window for practical uses. Also there is no better or worse window, we have various use cases that might necessitate use of...

The index n÷2 will be the midpoint for length n (for being the start point of the second half). Your "n=3 0 1 0" has the correct mid point for length 2, but the...

A triangular window slopes up in the first half, then down in the second half. So, the 20 point window would be:0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0.9 0.8 0.7...

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