Introduction - If you have any usage issues, please Google them yourself
In this
section, the procedure for Fourier magnitude computations is described examples
using real speech signals are included to illustrate the technique. Note that Fourier
magnitudes are calculated only when the frame is voiced or jittery voiced.
Many properties of the discrete Fourier transform (DFT) and discrete-time
Fourier transform (DTFT) are used to explain the topics in this section.