Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters

M. M. Ekanayake, Kamal Premaratne

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In this paper, a computationally simple method to obtain IIR analysis and synthesis filters that possess negligible phase distortion is presented. It is shown that for a certain class of FIR filter banks, the polyphase components are approximately all-pass. By applying the balanced reduction procedure to the polyphase components of such a FIR prototype filter all-pass IIR polyphase components are obtained. The resulting IIR designs have negligible phase distortion. Design examples indicate that the derived IIR filter banks can be implemented more efficiently than the FIR prototypes. Results show that the IIR filters are better than linear phase perfect reconstruction systems when implemented in a finite wordlength processor.

Original languageEnglish (US)
Title of host publicationConference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994
PublisherIEEE Computer Society
Pages1005-1009
Number of pages5
ISBN (Electronic)0818664053
DOIs
StatePublished - Jan 1 1994
Event28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994 - Pacific Grove, United States
Duration: Oct 31 1994Nov 2 1994

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2
ISSN (Print)1058-6393

Conference

Conference28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994
CountryUnited States
CityPacific Grove
Period10/31/9411/2/94

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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    Ekanayake, M. M., & Premaratne, K. (1994). Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters. In Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994 (pp. 1005-1009). [471611] (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2). IEEE Computer Society. https://doi.org/10.1109/ACSSC.1994.471611