Low-delay perfect reconstruction two-channel FIR/IIR filter banks and wavelet bases with SOPOT coefficients

  • Authors:

  • W. Liu;S. C. Chan;K. L. Ho

  • Affiliations:

  • Dept. of Electr. & Electron. Eng., Hong Kong Univ., China;-;-

  • Venue:
  • ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 01
  • Year:
  • 2000

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Abstract

A new family of two-channel low-delay filter banks and wavelet bases using the PR structure of Phoong, Kim and Vaidyanathan (1995) with sum of powers-of-two (SOPOT) coefficients are proposed. In particular, the functions alpha(z) and beta(z) in the structure are chosen as nonlinear-phase FIR and IIR filters, and the design of such multiplier-less filter banks is performed using the genetic algorithm. The proposed design method is very simple to use, and is sufficiently general to construct low-delay filter banks with flexible lengths, delays, and regularity. Several design examples are given to demonstrate the usefulness of the proposed method.