Introduce o In Chapter 5, we outlined a variety of basic structures for the realization of iir and fir transfer functions o In this chapter, we consider the iir digital filter design problem. The design of FIr digital filters is discussed in Chapter 7 2021年12月5日2时7分2021年12月5日2时7分 Introduce  In Chapter 5, we outlined a variety of basic structures for the realization of IIR and FIR transfer functions.  In this chapter, we consider the IIR digital filter design problem. The design of FIR digital filters is discussed in Chapter 7