Title :
A QMF IIR orthogonal digital filter realization with no amplitude distortion
Author :
Klouche-Djedid, Abdesselam ; Sekiguchi, Takashi ; Karasawa, Yoshio
Author_Institution :
ATR Adaptive Commun. Res. Labs., Kyoto, Japan
Abstract :
In this paper, an efficient digital filter structure is developed for the QMF two-channel filter bank. The filters are IIR type and both the aliasing and the amplitude distortion are eliminated. The resulting filter is thus all-pass having only phase distortion. A highly parallel and modular implementation is derived; the basic building block being either a planar rotation or a 1-multiplier lattice section. Some quantization analysis is included for the resulting realization
Keywords :
IIR filters; all-pass filters; band-pass filters; parallel architectures; quadrature mirror filters; quantisation (signal); QMF IIR orthogonal digital filter; all-pass filter; modular implementation; parallel implementation; phase distortion; planar rotation; quantization analysis; single-multiplier lattice section; two-channel filter bank; Digital communication; Digital filters; Filter bank; Finite impulse response filter; IIR filters; Image analysis; Image coding; Nonlinear filters; Phase distortion; Quantization;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.612806
