Simple Digital Filters Later in the course we shall review various methods of designing frequency-selective filters satisfying prescribed specifications We now describe several low-order fr and IIr digitalfilters with reasonable selective frequency responses that often are satisfactory in a number of applications Copyright C 2001, S K. MitraCopyright © 2001, S. K. Mitra 1 Simple Digital Filters • Later in the course we shall review various methods of designing frequency-selective filters satisfying prescribed specifications • We now describe several low-order FIR and IIR digital filters with reasonable selective frequency responses that often are satisfactory in a number of applications