Abstract

A simple rapidly convergent method is described for the design of two-channel IIR perfect reconstruction quadrature mirror filters. For any prescribed characteristic, it has been shown how one can construct a stable two-channel IIR banks, starting from any random transmission zero locations. A simple rapidly convergent search algorithm is also described for the determination of the exact locations of these transmission zeros, such that the filter has equiripple pass and stop responses as well as almost constant group delay. Illustrative examples are also given to show that the proposed design method competes very well with the existing design methods. © 1998 John Wiley & Sons, Ltd.

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