Abstract
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 language | English |
|---|---|
| Pages (from-to) | 1334-1338 |
| Number of pages | 5 |
| Journal | Conference Record of the Asilomar Conference on Signals, Systems and Computers |
| Volume | 2 |
| State | Published - 1 Jan 1997 |
| Event | Proceedings of the 1996 30th Asilomar Conference on Signals, Systems & Computers. Part 2 (of 2) - Pacific Grove, CA, USA Duration: 3 Nov 1996 → 6 Nov 1996 |
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Chen, S-G., Kao, M. C., & Chen, S. P. (1997). New type of perfect-reconstruction QMF banks. Conference Record of the Asilomar Conference on Signals, Systems and Computers, 2, 1334-1338.