Question: Consider a digital filter with transfer function given by
H(z) = (0.7 + 0.2z-1 + 0.8z-2)/(1 + 0.5z-1 - 0.24z-2)
(i) Plot the impulse response and the frequency characteristics of the filter.
(ii) From the frequency characteristics, determine the maximum magnitude of the pass-band and stop-band ripples and the transition bandwidth