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Design of Biorthogonal Filter Banks Composed of Linear Phase IIR Filters
Masahiro OKUDA Masaaki IKEHARA Shin-ichi TAKAHASHI
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Print ISSN: 0916-8508
Type of Manuscript: Category: Neural Networks
IIR filter banks, linear phase response, noncausal filtering, wavelet image conding,
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Since IIR filters have lower computational complexity than FIR filters, some design methods for IIR filter banks have been presented in the recent literatures. Smith et al. have proposed a class of linear phase IIR filter banks. However this method restricts the order of the numerator to be odd and has some drawbacks. In this paper, we present two design methods for linear phase IIR filter banks. One is based on Lagrange-Multiplier method, and optimal IIR filter banks in least squares sense are obtained. In an other approach, IIR filter banks with the maximum number of zeros are derived analytically.