FFTW

The FFTW module provides tools for computing fast Fourier transforms in Nelson.

It supports one-dimensional, two-dimensional, and multidimensional transforms, as well as inverse transforms and frequency-domain manipulations.

The module enables efficient spectral analysis and signal processing, leveraging high-performance algorithms for both real and complex data.

Functions

• FFTW License - About FFTW license.

• FFTWwrapper - load/free FFTW library dynamically.

• fft - Fast Fourier transform.

• fft2 - 2-D fast Fourier transform.

• fftn - N-Dimensions fast Fourier transform.

• fftshift - Shift the zero-frequency component to the center of the spectrum.

• fftw - function for determining FFT algorithm.

• ifft - Inverse Fast Fourier transform.

• ifftn - Inverse multidimensional fast Fourier transform.

• ifftshift - inverse of fftshift