Highly selective M -channel IIR cosine-modulated filter banks
Sung‐Hoon Kim, Chang D. Yoo · Electronics Letters · 2003
A simple method for designing highly selective M-channel infinite-impulse response (IIR) cosine-modulated filter banks (CMFBs) is proposed. High selectivity is achieved by relaxing the perfect reconstruction condition. The proposed method is simple because the design is based on a two-channel lattice structure with first-order allpass filters.