The Fast Fourier Transform: The C FFTW3 library (#001)
Channel: Digital Signal Processing
Date: 2013-10-07

The FFTW3 library is one of the most popular FFT implemenations and is very easy to use. We show how to comute an FFT of a real signal.
The code can be found in:
https://github.com/berndporr/comedirecord
in the fftscope.cpp file.