tensorplay.fft._transforms API

Computes the one-dimensional discrete Fourier transform.

Parameters:

• input (Tensor) – the input tensor

• n (int, optional) – signal length; zero-pads/truncates dim

• dim (int, optional) – the dimension to transform. Default: -1

• norm (str, optional) – "backward", "forward" or "ortho". Default: None (= "backward")

Computes the two-dimensional discrete Fourier transform.

Computes the N-dimensional discrete Fourier transform over dim.

dim defaults to the last len(s) dimensions when s is given and to every dimension otherwise; an entry of -1 in s keeps that dimension’s length.

Computes the 1-D FFT of a Hermitian-symmetric spectrum; real output.

Equivalent to irfft() applied to input.conj(); n is the output length (default 2 * (input.size(dim) - 1)).

Two-dimensional FFT of a Hermitian-symmetric spectrum; real output.

N-dimensional FFT of a Hermitian-symmetric spectrum; real output.

The forward transform over the leading transformed dimensions, then hfft() (conjugate + complex-to-real) along the final one.

Computes the one-dimensional inverse discrete Fourier transform.

Computes the two-dimensional inverse discrete Fourier transform.

Computes the N-dimensional inverse discrete Fourier transform.

Computes the inverse of hfft(); one-sided complex output.

Equivalent to the conjugate of rfft() of the real input, scaled as an inverse transform; n zero-pads/truncates the input along dim.

Two-dimensional counterpart of ihfft().

Inverse of hfftn(): ihfft() along the final transformed dimension, then the inverse transform over the remaining dimensions.

Computes the inverse of rfft(); n is the output length.

Computes the inverse of rfft2().

Inverse of rfftn(); s[-1] is the real output size (default 2 * (input.size(dim[-1]) - 1)).

Computes the one-dimensional FFT of real input, one-sided output.

Computes the two-dimensional FFT of real input.

N-dimensional FFT of real input; one-sided along the last listed dim.