An improved method for the design of FIR quadrature mirror-image filter banks

Author

Xu, Hua ; Lu, Wu-Sheng ; Antoniou, Andreas

Author_Institution

Nortel, Ottawa, Ont., Canada

Volume

46

Issue

5

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

1275

Lastpage

1281

Abstract

A new method for the design of general finite-duration impulse response (FIR) quadrature mirror-image filter (QMF) banks that eliminates the computation of large matrices is proposed. The design problem is formulated to include low-delay QMF banks, which are highly desirable in some applications. The paper concludes with design results and comparisons that show that conventional QMF banks can be designed with only a fraction of the computational effort required by a method due to Chen and Lee (1992). On the other hand, in the case of low-delay QMF banks, the proposed method can increase the stopband attenuation substantially compared with what can be achieved by existing methods

Keywords

FIR filters; band-pass filters; band-stop filters; computational complexity; iterative methods; linear network synthesis; quadrature mirror filters; FIR quadrature mirror-image filter banks; computational effort; design; finite-duration impulse response quadrature mirror-image filter banks; low-delay QMF banks; stopband attenuation; Attenuation; Channel bank filters; Degradation; Design methodology; Eigenvalues and eigenfunctions; Filter bank; Filtering theory; Finite impulse response filter; Passband; Signal processing algorithms;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.668791

Filename

668791