Practical design of multi-channel oversampled warped cosine-modulated filter banks

نویسندگان

  • Maxim Vashkevich
  • Wanggen Wan
  • Alexander A. Petrovsky
چکیده

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.

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عنوان ژورنال:
  • CoRR

دوره abs/1111.0737  شماره 

صفحات  -

تاریخ انتشار 2011