DESIGN OF 2 CHANNEL STABLE IIR PERFECT RECONSTRUCTION FILTER BANKS

In this paper, a novel method is proposed for designing two channel bi orthogonal filter banks with general IIR filters, which satisfy both t he perfect reconstruction and causal stable conditions. Since the prop osed filter banks are structurally perfect reconstruction implementati on, the perfect reconstruction property is still preserved even when a ll filter coefficients are quantized. The proposed design method is ba sed on the formulation of a generalized eigenvalue problem by using Re mez multiple exchange algorithm. Then. the filter coefficients can be computed by solving the eigenvalue problem, and the optimal solution i s easily obtained through a few iterations. One design example is pres ented to demonstrate the effectiveness of the proposed method.