Title :
A new approach to subband filter design
Author :
Pillai, S. Radhakrishnan
Author_Institution :
Dept. of Electr. & Electron. Eng., James Cook Univ. of North Queensland, Townsville, Qld., Australia
Abstract :
In this paper almost-perfect reconstruction techniques for m-channel multirate systems are investigated. It is shown here that using two allpass filters it is possible to generate a three channel filter bank that eliminates various errors caused by the analysis/synthesis system. In particular, a technique to cancel alias and magnitude distortion is outlined here. It is also shown that, the classical two channel synthesis filters is a special case of the proposed synthesis filter bank selection procedure. Illustrative examples and design algorithms are included to supplement the theory
Keywords :
all-pass filters; digital filters; filtering theory; network synthesis; alias cancellation; allpass filters; analysis/synthesis system; design algorithms; m-channel multirate systems; magnitude distortion cancellation; subband filter design; three channel filter bank; two channel synthesis filters; Algorithm design and analysis; Band pass filters; Channel bank filters; Filter bank; Signal analysis; Signal processing; Signal processing algorithms; Signal synthesis; Speech analysis; Speech coding; Speech synthesis;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342473
