A novel time-domain approach for the design of quadrature mirror filter banks

Author

Xu, H. ; Lu, W.-S. ; Antoniou, A.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

2

fYear

1994

fDate

3-5 Aug 1994

Firstpage

1032

Abstract

A novel approach for the design of two-channel QMF banks is proposed. In the design, instead of minimizing the objective function directly, an iterative procedure is used in each step in which the objective function is modified into a quadratic function whose minimum point can be obtained analytically. Compared with the iterative method proposed recently by Chen and Lee (1992) in which the perfect reconstruction condition is formulated in the frequency domain, the perfect reconstruction condition in our method is formulated in the time domain. This avoids calculating large matrices and leads to reduced computation complexity in the design. A case study is included which demonstrates that the proposed method needs only a fraction of the computation time required by the method of Chen and Lee

Keywords

eigenvalues and eigenfunctions; filtering theory; iterative methods; quadrature mirror filters; time-domain synthesis; computation complexity; iterative procedure; objective function; perfect reconstruction condition; quadratic function; quadrature mirror filter banks; time-domain method; two-channel QMF banks; Channel bank filters; Degradation; Design methodology; Filter bank; Frequency domain analysis; Iterative methods; Mirrors; Nonlinear filters; Signal processing; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on

Conference_Location

Lafayette, LA

Print_ISBN

0-7803-2428-5

Type

conf

DOI

10.1109/MWSCAS.1994.518988

Filename

518988