Title :
Weighted complementary IIR digital filters
Author :
Renfors, Markku ; Mitra, Sanjit K. ; Regalia, Phillip A. ; Neuvo, Yrjö
Author_Institution :
Nokia Res. Center, Tampere, Finland
Abstract :
The authors examine the properties of weighted complementary IIR (infinite impulse response) filters utilizing either real or complex conjugate allpass subfilters. A generalized structure where the allpass branches include arbitrary real or complex weighting constants is discussed. Applications of these weighted complementary filters include gain equalizers, digital filters with multilevel magnitude response, and sharpening the amplitude response of digital filters realized as a cascade of identical filter stages
Keywords :
cascade networks; digital filters; filtering and prediction theory; IIR digital filters; allpass subfilters; amplitude response; filter cascade; gain equalizers; infinite impulse response; multilevel magnitude response; weighted cascaded designs; weighted complementary filters; weighting constants; Costs; Digital filters; Equalizers; Frequency response; IIR filters; Power filters; Prototypes; Transfer functions;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176292
