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BUILT-IN MATHEMATICA SYMBOL
PeriodogramArray
PeriodogramArray[list]
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.
Details and Options
- PeriodogramArray works with numeric arrays of any rank, SampledSoundList objects, and 2D and 3D images.
- For multichannel sound and image objects, a list of power spectra of each channel is returned.
- In PeriodogramArray[list, n, d, wfun], the smoothing window wfun can be specified using a window function that will be sampled between
and 
or a list of length n. The default window is DirichletWindow, which effectively does no smoothing. - PeriodogramArray[list, n] is equivalent to PeriodogramArray[list, n, n, DirichletWindow, n].
- PeriodogramArray[list, {n1, n2, ...}] partitions a nested list into blocks of size
×
×... . - For multidimensional arrays, n is taken to be equivalent to
. - PeriodogramArray accepts the FourierParameters option. The default setting is FourierParameters->{0, 1}.
- For multichannel images, PeriodogramArray is computed for each channel separately.
New in 9
