Finite-Difference Filter Design 16. Using the finite-difference method and all backward differences, design digital filters to approximate analog filters with these transfer functions. In each case...

Signals and Systems b. Only

Extracted text: Finite-Difference Filter Design 16. Using the finite-difference method and all backward differences, design digital filters to approximate analog filters with these transfer functions. In each case choose a sampling frequency that is 10 times the magnitude of the distance of the farthest pole or zero from the origin of the s plane. Graphically compare the step responses of the digital and analog filters. s2 s+ 60 (a) Ha(s)= (b) H«(s) = s2 + 3s +2 s2 +120s + 2000