New IIR Digital Filter Realizations Using Residue-Feedback

The problem of synthesizing finite wordlength fixed-point realizations of Nth-order IIR digital filters, which use second-order residue feedback, is considered. It is shown that by proper choice of simple residue feedback schemes, new optimal and suboptimal (with respect to output roundoff noise) structures can be obtained for narrow band-pass and band-stop… CONTINUE READING