Title :
Low-delay perfect reconstruction two-channel FIR/IIR filter banks and wavelet bases with SOPOT coefficients
Author :
Liu, W. ; Chan, S.C. ; Ho, K.L.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., China
Abstract :
A new family of two-channel low-delay filter banks and wavelet bases using the PR structure of Phoong, Kim and Vaidyanathan (1995) with sum of powers-of-two (SOPOT) coefficients are proposed. In particular, the functions alpha(z) and beta(z) in the structure are chosen as nonlinear-phase FIR and IIR filters, and the design of such multiplier-less filter banks is performed using the genetic algorithm. The proposed design method is very simple to use, and is sufficiently general to construct low-delay filter banks with flexible lengths, delays, and regularity. Several design examples are given to demonstrate the usefulness of the proposed method
Keywords :
FIR filters; IIR filters; channel bank filters; delays; digital filters; genetic algorithms; nonlinear filters; nonlinear network synthesis; signal reconstruction; wavelet transforms; SOPOT coefficients; delays; filter design; filter length; genetic algorithm; low-delay perfect reconstruction filter banks; multiplier-less filter banks; nonlinear-phase FIR filter; nonlinear-phase IIR filter; regularity; sum of powers-of-two coefficients; two-channel FIR/IIR filter banks; wavelet bases; Algorithm design and analysis; Attenuation; Channel bank filters; Delay systems; Design methodology; Filter bank; Finite impulse response filter; Genetic algorithms; IIR filters; Signal analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.861876
