Design of linear-phase perfect reconstruction nonuniform FIR filter banks

Takaaki Fuchie, Takayuki Nagai, Masaaki Ikehara

Research output: Contribution to journalArticle

Abstract

In this paper, we propose a design method of perfect reconstruction (PR) nonuniform filter banks. Filter banks are roughly separated into nonparaunitary and paraunitary ones. Paraunitary filter banks have some advantages: for example, the frequency responses of synthesis filters are identical to those of analysis filters. However, the severe constraint makes it difficult to design them and, especially in the nonuniform case, the design method becomes complex for some frequency-division cases. Thus, we concentrate on nonparaunitary filter banks and present a design method for nonuniform filter banks with arbitrary lengths and frequency divisions.

Original languageEnglish
Pages (from-to)51-59
Number of pages9
JournalElectronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume80
Issue number10
Publication statusPublished - 1997 Oct

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Filter banks
FIR filters
Frequency response

Keywords

  • Linear phase
  • Nonuniform filter banks
  • Perfect reconstruction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

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AB - In this paper, we propose a design method of perfect reconstruction (PR) nonuniform filter banks. Filter banks are roughly separated into nonparaunitary and paraunitary ones. Paraunitary filter banks have some advantages: for example, the frequency responses of synthesis filters are identical to those of analysis filters. However, the severe constraint makes it difficult to design them and, especially in the nonuniform case, the design method becomes complex for some frequency-division cases. Thus, we concentrate on nonparaunitary filter banks and present a design method for nonuniform filter banks with arbitrary lengths and frequency divisions.

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