Title :
Design of IIR linear-phase QMF banks based on complex allpass sections
Author :
Argenti, Fabnzio ; Cappellini, Vito ; Sciorpes, Andrea ; Venetsanopoulos, Anastasios N.
Author_Institution :
Dipartimento di Ingegneria Elettronica, Firenze Univ., Italy
fDate :
5/1/1996 12:00:00 AM
Abstract :
A new method for the design of two-channel, perfect reconstruction, analysis/synthesis QMF banks is presented. The filters of the banks are IIR, 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
Keywords :
IIR filters; all-pass filters; band-pass filters; quadrature mirror filters; signal reconstruction; IIR linear-phase QMF banks; complex allpass sections; design; flatness constraint; frequency response; linear phase filters; numerical approximation; perfect reconstruction; power complementary filters; Design methodology; Filter bank; Frequency; IIR filters; Low pass filters; Mirrors; Nonlinear filters; Polynomials; Signal synthesis; Transfer functions;
Journal_Title :
Signal Processing, IEEE Transactions on
