A new method for the design of two-channel, perfect reconstruction, anal y sis/synthesis QMF bunks is presented. The filters of the banks are HR, power complementary, linear phase, and are represented by means of complex allpass functions. Design procedures based both on numerical approximation and on a flatness constraint imposed on the frequency responses of the filters are given.
Design of IIR Linear Phase QMF Banks Based on Complex Allpass Sections / F. ARGENTI; V. CAPPELLINI; A. SCIORPES; A.N. VENETSANOPOULOS. - In: IEEE TRANSACTIONS ON SIGNAL PROCESSING. - ISSN 1053-587X. - STAMPA. - 44:(1996), pp. 1262-1267. [10.1109/78.502338]
Design of IIR Linear Phase QMF Banks Based on Complex Allpass Sections
ARGENTI, FABRIZIO;CAPPELLINI, VITO;
1996
Abstract
A new method for the design of two-channel, perfect reconstruction, anal y sis/synthesis QMF bunks is presented. The filters of the banks are HR, power complementary, linear phase, and are represented by means of complex allpass functions. Design procedures based both on numerical approximation and on a flatness constraint imposed on the frequency responses of the filters are given.
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