3.1 Introduction
This chapter presents a concise review of all popular window functions that are commonly employed in digital signal processing. Since no window is the best in all aspects, it should be selected according to the user’s requirements. First, the characteristics that qualify a function to be a window function are outlined in Section 3.2. In Section 3.3, almost all the window functions are cataloged, along with their time-domain and frequency-domain representations. The Fourier domain representations of these windows are also discussed at length. Section 3.4 provides theorems relating to the rate of fall-off side-lobe levels (RFSLL) of windows. We then describe the various basic parameters ...
