NDLI: Perfect reconstruction time-varying IIR filter banks

Content Provider	IEEE Xplore Digital Library
Author	Creusere, C.D.
Copyright Year	1996
Description	Author affiliation: Naval Air Warfare Center, China Lake, CA, USA (Creusere, C.D.)
Abstract	We consider here the general problem of implementing perfect reconstruction IIR filter banks, allowing the use of both causal and noncausal filtering stages. Past work including that of Smith & Chung (1995) and Chen & Vaidyanathan (1993) has focused exclusively on filter banks having only noncausal filtering stages, probably because the computationally efficient modulated polyphase allpass filter bank falls into this category. We use a canonical direct form II framework here which is closely related to that of Chen and Vaidyanathan. In addition to considering extensions of this framework to include causal filtering stages, we point out some constraints analogous to those found by Smith and Chung for their direct form I implementation. Finally, we consider in detail the problem of selecting initial filter states to guarantee perfect cancellation of startup transients for finite length sequences in the time-varying case. We derive here a result for circular convolution with time-varying IIR filters analogous to that found by Smith & Eddins (1990) for time-invariant filters.
Starting Page	1319
Ending Page	1323
File Size	498013
Page Count	5
File Format	PDF
ISBN	0818676469
ISSN	10586393
DOI	10.1109/ACSSC.1996.599161
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	IIR filters Filter bank Finite impulse response filter Image reconstruction Filtering Convolution Time varying systems Delay Lakes Audio coding
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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