New results and open problems on nonuniform filter-banks

Authors:
S. Akkarakaran;P. P. Vaidyanathan
Affiliations:
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA;-
Venue:
ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 03
Year:
1999

Citing 0
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Set of Perfect Reconstruction Non-uniform Filter Banks via a Tree Structure

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Review Article: Design of nearly perfect reconstructed non-uniform filter bank by constrained equiripple FIR technique

Applied Soft Computing
An efficient iterative method for nearly perfect reconstruction non-uniform filter bank

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Abstract

Nonuniform filter-banks (FBs) have traditionally been built either by cascading uniform ones in a tree structure or by direct design methods that lead to near-perfect reconstruction. However many theoretical issues remain unresolved. This paper begins by pointing out a number of these issues, and summarizes the known conditions for existence of nonuniform perfect reconstruction (PR) FBs. As a new contribution, we simplify some of these conditions and make them more explicit. We provide examples that illustrate some hitherto unobserved connections between these conditions.