New type of perfect-reconstruction QMF banks

Sau-Gee Chen*, Min Chi Kao, Sy Ping Chen

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


A new type of perfect-reconstruction QMF system is proposed. The filter system is based on half-band filters so that it has lower complexity and group delay than the known QMF systems, with a comparable performance. It is shown that the new PR QMF system achieves zero phase distortion and zero amplitude distortion, in addition to producing alias-free outputs. A filter optimization technique is also proposed for its prototype low pass filter. For realization, its polyphase architecture is derived, which has very simple structure.

Original languageEnglish
Pages (from-to)1334-1338
Number of pages5
JournalConference Record of the Asilomar Conference on Signals, Systems and Computers
StatePublished - 1 Jan 1997
EventProceedings of the 1996 30th Asilomar Conference on Signals, Systems & Computers. Part 2 (of 2) - Pacific Grove, CA, USA
Duration: 3 Nov 19966 Nov 1996

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