Title :
Design of two channel IIR QMF filters with smooth wavelet functions
Author :
Saleh, A.I. ; Fahmy, M.F. ; Raheem, G.A. ; Fahmy, G.F.
Author_Institution :
Dept. of Electr. Eng., Assiut Univ., Egypt
Abstract :
This paper presents a rapidly convergent algorithm for the design of pseudo perfect reconstruction two channel IIR filter banks with regular wavelet functions. Regularity is achieved through imposing multiple poles at z=-1 in the analysis and synthesis filter banks. The proposed algorithm yields a stable IIR function with equiripple pass and stop responses and with almost constant group delay. It is shown that the analysis and synthesis banks are of the same complexities and as a result of being realized in a lattice form they are immune from quantization effects. Illustrative examples are also given
Keywords :
IIR filters; channel bank filters; delays; elliptic filters; lattice filters; network synthesis; poles and zeros; quadrature mirror filters; signal reconstruction; wavelet transforms; analysis filter bank; constant group delay; elliptic loss response; equiripple pass response; equiripple stop response; lattice filter; multiple poles; pseudo perfect reconstruction filter banks design; quadrature mirror filters; quantization effects immunity; rapidly convergent algorithm; regular wavelet functions; smooth wavelet functions; stable IIR function; synthesis filter bank; two channel IIR QMF filters; two channel IIR filter banks; Algorithm design and analysis; Filter bank; Filtering theory; Finite impulse response filter; Frequency; IIR filters; Lattices; Mirrors; Signal synthesis; Transfer functions;
Conference_Titel :
Radio Science Conference, 1999. NRSC '99. Proceedings of the Sixteenth National
Conference_Location :
Cairo
Print_ISBN :
977-5031-62-1
DOI :
10.1109/NRSC.1999.760904
