Windows - window functions

Windows - window functions

DSP.Windows.rect — Function.
rect(n)

Rectangular window function of length n.

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DSP.Windows.hanning — Function.
hanning(n)

Hanning window of length n.

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DSP.Windows.hamming — Function.
hamming(n)

Hamming window of length n.

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DSP.Windows.tukey — Function.
tukey(n, alpha)

Tukey window of length n, parameterized by alpha. For alpha = 0, the window is equivalent to a rectangular window. For alpha = 1, the window is a Hann window.

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DSP.Windows.cosine — Function.
cosine(n)

Cosine window of length n. Also called the sine window for obvious reasons.

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DSP.Windows.lanczos — Function.
lanczos(n)

Lanczos window of length n.

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DSP.Windows.triang — Function.
triang(n)

Triangular window of length n.

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DSP.Windows.bartlett — Function.
bartlett(n)

Bartlett window of length n.

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DSP.Windows.gaussian — Function.
gaussian(n, sigma)

Gaussian window of length n parameterized by the standard deviation sigma.

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DSP.Windows.bartlett_hann — Function.
bartlett_hann(n)

Bartlett-Hann window of length n.

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DSP.Windows.blackman — Function.
blackman(n)

"Exact" Blackman window, alpha = 0.16.

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DSP.Windows.kaiser — Function.
kaiser(n, alpha)

Kaiser window of length n parameterized by alpha.

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DSP.Windows.dpss — Function.
dpss(n, nw, ntapers=iceil(2*nw)-1)

The first ntapers discrete prolate spheroid sequences (Slepian tapers) as an n × ntapers matrix. The signs of the tapers follow the convention that the first element of the skew-symmetric (odd) tapers is positive. The time-bandwidth product is given by nw.

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DSP.Windows.dpsseig — Function.
dpsseig(A, nw)

Eigenvalues of the DPSS matrix, representing the ratios of the power within the main lobe to the total power (main and sidelobes). A is the output of dpss, and nw is the time-bandwidth product provided to dpss as input.

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