Return a Parzen window.
M : int
Number of points in the output window. If zero or less, an empty array is returned.
sym : bool, optional
When True, generates a symmetric window, for use in filter design. When False, generates a periodic window, for use in spectral analysis.
w : ndarray
The window, with the maximum value normalized to 1 (though the value 1 does not appear if the number of samples is even and sym is True).
Examples
scipy.signal.nuttall
scipy.signal.slepian
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