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Fourier transforms (scipy.fftpack)

Fast Fourier transforms

fft(x[, n, axis, overwrite_x])	Return discrete Fourier transform of arbitrary type sequence x.
ifft(x[, n, axis, overwrite_x])	Return discrete inverse Fourier transform of real or complex sequence.
fftn(x[, shape, axes, overwrite_x])	fftn(x, shape=None, axes=None, overwrite_x=0) -> y
ifftn(x[, shape, axes, overwrite_x])	Return inverse multi-dimensional discrete Fourier transform of
fft2(x[, shape, axes, overwrite_x])	2-D discrete Fourier transform.
ifft2(x[, shape, axes, overwrite_x])	2-D discrete inverse Fourier transform of real or complex sequence.
rfft(x[, n, axis, overwrite_x])	Discrete Fourier transform of a real sequence.
irfft(x[, n, axis, overwrite_x])	irfft(x, n=None, axis=-1, overwrite_x=0) -> y

Differential and pseudo-differential operators

diff(x[, order, period, _cache])	diff(x, order=1, period=2*pi) -> y
tilbert(x, h[, period, _cache])	tilbert(x, h, period=2*pi) -> y
itilbert(x, h[, period, _cache])	itilbert(x, h, period=2*pi) -> y
hilbert(x[, _cache])	hilbert(x) -> y
ihilbert(x)	ihilbert(x) -> y
cs_diff(x, a, b[, period, _cache])	cs_diff(x, a, b, period=2*pi) -> y
sc_diff(x, a, b[, period, _cache])	Return (a,b)-sinh/cosh pseudo-derivative of a periodic sequence x.
ss_diff(x, a, b[, period, _cache])	ss_diff(x, a, b, period=2*pi) -> y
cc_diff(x, a, b[, period, _cache])	cc_diff(x, a, b, period=2*pi) -> y
shift(x, a[, period, _cache])	shift(x, a, period=2*pi) -> y

Helper functions

fftshift(x[, axes])	Shift the zero-frequency component to the center of the spectrum.
ifftshift(x[, axes])	The inverse of fftshift.
fftfreq(n[, d])	Return the Discrete Fourier Transform sample frequencies.
rfftfreq(n[, d])	rfftfreq(n, d=1.0) -> f

Convolutions (scipy.fftpack.convolve)

convolve	convolve - Function signature:
convolve_z	convolve_z - Function signature:
init_convolution_kernel	init_convolution_kernel - Function signature:
destroy_convolve_cache	destroy_convolve_cache - Function signature:

Other (scipy.fftpack._fftpack)

drfft	drfft - Function signature:
zfft	zfft - Function signature:
zrfft	zrfft - Function signature:
zfftnd	zfftnd - Function signature:
destroy_drfft_cache	destroy_drfft_cache - Function signature:
destroy_zfft_cache	destroy_zfft_cache - Function signature:
destroy_zfftnd_cache	destroy_zfftnd_cache - Function signature: