torch.fft

Created On: Aug 06, 2020 | Last Updated On: Mar 10, 2022

Discrete Fourier transforms and related functions.

Fast Fourier Transforms

fft	Computes the one dimensional discrete Fourier transform of input.
ifft	Computes the one dimensional inverse discrete Fourier transform of input.
fft2	Computes the 2 dimensional discrete Fourier transform of input.
ifft2	Computes the 2 dimensional inverse discrete Fourier transform of input.
fftn	Computes the N dimensional discrete Fourier transform of input.
ifftn	Computes the N dimensional inverse discrete Fourier transform of input.
rfft	Computes the one dimensional Fourier transform of real-valued input.
irfft	Computes the inverse of rfft().
rfft2	Computes the 2-dimensional discrete Fourier transform of real input.
irfft2	Computes the inverse of rfft2().
rfftn	Computes the N-dimensional discrete Fourier transform of real input.
irfftn	Computes the inverse of rfftn().
hfft	Computes the one dimensional discrete Fourier transform of a Hermitian symmetric input signal.
ihfft	Computes the inverse of hfft().
hfft2	Computes the 2-dimensional discrete Fourier transform of a Hermitian symmetric input signal.
ihfft2	Computes the 2-dimensional inverse discrete Fourier transform of real input.
hfftn	Computes the n-dimensional discrete Fourier transform of a Hermitian symmetric input signal.
ihfftn	Computes the N-dimensional inverse discrete Fourier transform of real input.

Helper Functions

fftfreq	Computes the discrete Fourier Transform sample frequencies for a signal of size n.
rfftfreq	Computes the sample frequencies for rfft() with a signal of size n.
fftshift	Reorders n-dimensional FFT data, as provided by fftn(), to have negative frequency terms first.
ifftshift	Inverse of fftshift().