Design of unequal-length linear-phase filter banks without redundancy

Yuichi Tanaka, Akihiro Ochi, Masaaki Ikehara

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

Abstract

In this paper, we present a new structure for linear-phase filter banks without redundancy, which have unequal-length filters at each sub-band. First, we extend the simplified lattice structure of the linear-phase filter bank to the unequal-length linear-phase paraunitary filter bank. In general, the unequal-length linear-phase paraunitary filter bank has equal-length filters at both the analysis and the synthesis bank because the synthesis bank is a transposed version of the analysis one, while the biorthogonal one does not. So, we discuss the conditions that the linear-phase biorthogonal filter bank has unequal-length filters at 1) the analysis bank, 2) the synthesis bank, and 3) both the analysis and the synthesis banks. Finally, several design and image coding examples are shown.

Original languageEnglish
Title of host publication13th European Signal Processing Conference, EUSIPCO 2005
Pages301-304
Number of pages4
Publication statusPublished - 2005 Dec 1
Event13th European Signal Processing Conference, EUSIPCO 2005 - Antalya, Turkey
Duration: 2005 Sep 42005 Sep 8

Publication series

Name13th European Signal Processing Conference, EUSIPCO 2005

Other

Other13th European Signal Processing Conference, EUSIPCO 2005
CountryTurkey
CityAntalya
Period05/9/405/9/8

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ASJC Scopus subject areas

  • Signal Processing

Cite this

Tanaka, Y., Ochi, A., & Ikehara, M. (2005). Design of unequal-length linear-phase filter banks without redundancy. In 13th European Signal Processing Conference, EUSIPCO 2005 (pp. 301-304). (13th European Signal Processing Conference, EUSIPCO 2005).