An optimized design of nonuniform filter bank using variable-combinational window function

Authors: Ramkumar Soni, Alok Jain, Rajiv Saxena

Abstract:
This paper proposes an optimized tree structure technique for the design of near perfect reconstruction (NPR) non-uniform filterbank. Popular variable window functions like Kaiser, Dolph-Chebyshev (DC) and Parzen-cos6 (n/N) (PC6) are used in the design of prototype filter. The NPR condition, results the distortion at the output. Therefore a linear iterative optimization technique is used to minimize the distortion. The proposed algorithm provides lowest value of distortion parameter than earlier reported publications with minimum computation overhead.

Keywords:
Tree structure
NUFB
QMF
CMFB

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 7, July  2013)

Publisher: Elsevier

ISSN Information: 1434-8411

An optimized design of nonuniform filter bank using variable-combinational window function

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