ABSTRACT
Digital fi lters represent essential and fundamental components in almost all DSP systems. Like their analog counterpart, they are mostly employed to reshape the magnitude and phase spectrum of an input signal. Besides this major function, they can also be used, for example, to de-noise signals, to disjoin two signals from each other, to limit the bandwidth of a signal, to detect/enhance the contours in a certain image, and so on. In this chapter, we are going to study the design techniques for the two types of digital fi lters; namely, FIR and IIR fi lters.
