Install sfftw2 by entering the following commands in the terminal:
sudo apt update sudo apt install sfftw2
Description:
library for computing Fast Fourier Transforms
This library computes Fast Fourier Transforms (FFT) in one or more dimensions. It is extremely fast. This package contains the shared library version of the fftw libraries in single precision. . To get the static library and the header files you need to install sfftw-dev. . For documentation and test programs, install fftw-docs
Homepage: http://fftw.org
Version: 2.1.5-4.2
Section: universe/libs