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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/7069
Title: An efficient iterative method for nearly perfect reconstruction non-uniform filter bank
Authors: Anurag S.
Kumar A.
Singh, Girish Kumar
Published in: International Journal of Speech Technology
Abstract: In this paper, a computationally efficient iterative algorithm is presented for the design of multi-channel nearly perfect reconstruction nonuniform filter bank using the modified window functions such as Kaiser, Cosh and Exponential windows with exploiting a new perfect reconstruction condition of nonuniform filter banks instead of using complex objective functions. The cutoff frequency is optimized using linear optimization technique such that the magnitude response of a prototype filter at quadrature frequency is approximately equal to 0.707. The simulation results illustrate significant reduction in amplitude distortion, number of iteration and computation time as compared to earlier existing techniques. The proposed algorithm is simple, easy to implement, and linear in nature. When exploited for subband coding of electrocardiogram (ECG) signals, the proposed method yields good fidelity performance measuring parameters. © 2012 Springer Science+Business Media New York.
Citation: International Journal of Speech Technology (2013), 16(3): 261-272
URI: https://doi.org/10.1007/s10772-012-9181-1
http://repository.iitr.ac.in/handle/123456789/7069
Issue Date: 2013
Keywords: Filter bank
Nonuniform filter (NUFB)
QMF
Subband coding
Tree-structure
ISSN: 13812416
Author Scopus IDs: 55247126100
57215268681
57193351909
Author Affiliations: Anurag, S., PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur 482005 MP, India
Kumar, A., PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur 482005 MP, India
Singh, G.K., Indian Institute of Technology, Roorkee 247667 Uttrakhand, India
Corresponding Author: Kumar, A.; PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur 482005 MP, India; email: anilkdee@gmail.com
Appears in Collections:Journal Publications [EE]

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