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BUILT-IN MATHEMATICA SYMBOL
Spectrogram
Spectrogram[list]
plots the spectrogram of list.
Spectrogram[list, n]
uses partitions of length n.
Spectrogram[list, n, d]
uses partitions with offset d.
Spectrogram[list, n, d, wfun]
applies a smoothing window wfun to each partition.
Details and Options
- Spectrogram[list] plots the magnitude of discrete Fourier transforms of partitions of list.
- Spectrogram[list] uses partitions of length
and offset Round[
], where m is Length[list]. - Spectrogram displays only the first half of the magnitude of the discrete Fourier transform due to the symmetry property of the transform.
- In Spectrogram[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. - Spectrogram works with SampledSoundList objects. For multichannel sound objects, the spectrogram is computed over the sum of all channels.
- Spectrogram accepts a SampleRate option that takes positive integer values.
- For the setting SampleRate->r and a list of length m, time is ranged from
to 
, and the frequencies are in the range 
to r/2. - Spectrogram also accepts all options of ArrayPlot.
New in 9
