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Hann-Poisson Window and Transform


\begin{psfrags}\psfrag{freq}{$\omega T$\ (radians per sample)} \par\begin{center} \epsfig{file=eps/hannPoissonWindow-c.eps,width=\textwidth } \\ \end{center} \par \end{psfrags}
Question:
How can a truncated anything avoid having ripples in its spectrum? (``Gibbs ripples'')
Let's look at the derivatives of the window:

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``FFT Windows'', by Julius O. Smith III and Bill Putnam, (From Lecture Overheads, Music 421).
Copyright © 2020-06-27 by Julius O. Smith III and Bill Putnam
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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