Impulse-Invariant and Step-Invariant Filter Design 14. Using the impulse-invariant design method, design a discrete-time system to approximate the continuous-time systems with these transfer functions...

Signals and systems b. Only

Extracted text: Impulse-Invariant and Step-Invariant Filter Design 14. Using the impulse-invariant design method, design a discrete-time system to approximate the continuous-time systems with these transfer functions at the sampling rates specified. Compare the impulse and unit-step (or sequence) responses of the continuous-time and discrete-time systems. 712s 712s (a) H«(s)= fs= 20 Hz (b) H«(s)= fs= 200 Hz %3D s2 + 46s + 240' s2 +46s + 240´