Design of face-centred orthorhombic filter banks

Authors:
Her-Chang Chao;Chih-Hsin Lin;Bin-Chang Chieu
Affiliations:
Department of Computer Science and Information Engineering, Ming Chuan University, Taoyuan, Taiwan, R.O.C. 333;Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, R.O.C. 106;Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, R.O.C. 106
Venue:
Multidimensional Systems and Signal Processing
Year:
2007

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Abstract

In this paper, a method to design the two-channel FIR linear-phase (LP) face-centred orthorhombic (FCO) filter banks with equiripple magnitude responses and perfect-reconstruction (PR) is presented. The necessary conditions of lengths of LP FCO filter banks satisfying the PR constraint are derived. An interior-point algorithm is utilized to optimize the peak ripples of the analysis filters and a first-order approximation skill is introduced to satisfy the PR constraint. The simulation example is presented to illustrate the effectiveness of this proposed design technique.