FFT Applications: Tips and Tricks

Abstract

In this chapter some important FFT applications in DSP field are presented, mainly to spectral analysis. We learn how to exploit FFT for efficient and flexible calculations of the following DSP functions: discrete Fourier transform (DFT) and its zoomed as well as interpolated (IpDFT) version, discrete-time Fourier transform (DtFT), short-time Fourier transform function, signal correlation function and power spectral density (PSD), finally, signal convolution.