Characteristics of practical frequency-selective filters Digital Signal Processing--FIR Digital Filter Design IH(@)l 1+61 1-81 δ1~Passband ripple 82~Stopband ripple Passband ripple p~Passband edge frequency @Stopband edge frequency Stopband Transition 82 band Qp D π Figure 10.1.2 Magnitude characteristics of physically realizable filters. 上游充通大Digital Signal Processing—— FIR Digital Filter Design Characteristics of practical frequency-selective filters