module

fft

22 members

lucid.fft

lucid.fft — discrete Fourier transform ops.

Functions

fnfftn→ Tensor

N-dimensional discrete Fourier transform.

fnifftn→ Tensor

N-dimensional inverse discrete Fourier transform.

fnfft→ Tensor

1-D discrete Fourier transform along a single axis.

fnifft→ Tensor

1-D inverse discrete Fourier transform along a single axis.

fnfft2→ Tensor

2-D discrete Fourier transform over a pair of axes.

fnifft2→ Tensor

2-D inverse discrete Fourier transform over a pair of axes.

fnrfftn→ Tensor

N-dimensional FFT of a real-valued input, exploiting conjugate symmetry.

fnirfftn→ Tensor

N-dimensional inverse FFT for a Hermitian-symmetric spectrum.

fnrfft→ Tensor

1-D FFT of a real-valued input along a single axis.

fnirfft→ Tensor

1-D inverse FFT for a Hermitian-symmetric spectrum.

fnrfft2→ Tensor

2-D FFT of a real-valued input over a pair of axes.

fnirfft2→ Tensor

2-D inverse FFT for a Hermitian-symmetric spectrum.

fnhfftn→ Tensor

N-dimensional FFT of a Hermitian-symmetric complex signal.

fnihfftn→ Tensor

N-dimensional inverse FFT of a real-valued signal, giving a Hermitian output.

fnhfft→ Tensor

1-D FFT of a Hermitian-symmetric complex signal.

fnihfft→ Tensor

1-D inverse FFT of a real signal, giving a Hermitian half-spectrum.

fnhfft2→ Tensor

2-D FFT of a Hermitian-symmetric complex signal over a pair of axes.

fnihfft2→ Tensor

2-D inverse FFT of a real signal, giving a Hermitian half-spectrum.

fnfftfreq→ Tensor

Frequency bin centres for the output of `fft` / `fftn`.

fnrfftfreq→ Tensor

Frequency bin centres for the output of `rfft` / `rfftn`.

fnfftshift→ Tensor

Shift the zero-frequency component to the centre of the spectrum.

fnifftshift→ Tensor

Undo the zero-frequency centring performed by `fftshift`.