returns the squared magnitude of the discrete Fourier transform (power spectrum) of list.

PeriodogramArray[list, n]
averages the power spectra of non-overlapping partitions of length n.

PeriodogramArray[list, n, d]
uses partitions with offset d.

PeriodogramArray[list, n, d, wfun]
applies a smoothing window wfun to each partition.

PeriodogramArray[list, n, d, wfun, m]
pads partitions with zeros to length m prior to the computation of the transform.

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