Practical design of multi-channel oversampled warped cosine-modulated filter banks
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Publication:6228787
arXiv1111.0737MaRDI QIDQ6228787
Alexander Petrovsky, Maxim Vashkevich, Wanggen Wan
Publication date: 3 November 2011
Abstract: A practical approach to optimal design of multichannel oversampled warped cosine-modulated filter banks (CMFB) is proposed. Warped CMFB is obtained by allpass transformation of uniform CMFB. The paper addresses the problems of minimization amplitude distortion and suppression of aliasing components emerged due to oversampling of filter bank channel signals. Proposed optimization-based design considerably reduces distortions of overall filter bank transfer function taking into account channel subsampling ratios. Matlab-implementation of the proposed warped CMFB design method is available in public GitHub repository.
Has companion code repository: https://github.com/Mak-Sim/Warped-filter-bank
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