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11.13.4 Spectral Transform Functions

These return values associated with spectral transforms, or perform functions useful in conjunction with those.

fft

Returns the real-valued Fourier transform.

hilbert

Returns the forward or backward Hilbert transform.

power

Returns the power spectrum.

sc

Returns the sine and cosine transforms.

scb

Returns the inverse sine and cosine transforms.

swaphalf

Swaps "left" and "right" parts of an array in all of its dimensions.