Low-delay QMF banks with equiripple complex reconstruction error

Author

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

Author_Institution

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

Volume

2

fYear

1995

fDate

13-16 Aug 1995

Firstpage

681

Abstract

A method for the design of two-channel low-delay QMF banks with equiripple complex reconstruction error is proposed. A weighted objective function in which the reconstruction error is defined in terms of the difference between the frequency response of the filter bank and that of an ideal allpass channel is constructed. Based on this objective function an iterative algorithm is developed which forces the magnitude of the complex reconstruction error to become equiripple. The paper concludes with design examples which illustrate the efficiency of the algorithm and the performance of the filter banks designed

Keywords

delays; errors; filtering theory; frequency response; iterative methods; quadrature mirror filters; signal processing; equiripple complex reconstruction error; filter bank; frequency response; iterative algorithm; low-delay QMF banks; two-channel bank; weighted objective function; Algorithm design and analysis; Channel bank filters; Computer errors; Delay; Design methodology; Filter bank; Finite impulse response filter; Frequency response; Iterative algorithms; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on

Conference_Location

Rio de Janeiro

Print_ISBN

0-7803-2972-4

Type

conf

DOI

10.1109/MWSCAS.1995.510181

Filename

510181