Pseudo-QMF banks with near-equiripple performance

Author

Jayasimha, Sriram ; Hiremath, C.G.

Author_Institution

Signion Syst. Ltd., Hyderabad, India

Volume

46

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

209

Lastpage

214

Abstract

A novel method using the Parks-McClellan equiripple design procedure obtains a linear-phase spectral factor of an equiripple approximate 2Mth-band lowpass filter. This filter, which is an equiripple prototype of an M-channel pseudo-QMF bank, is modified to make it a closer approximation of a linear-phase spectral-factor of a 2Mth-band filter, reducing the maximum overall reconstruction error to the order of the stopband ripple, while slightly compromising equiripple performance

Keywords

band-pass filters; band-stop filters; delay circuits; error analysis; low-pass filters; quadrature mirror filters; signal reconstruction; spectral analysis; M-channel pseudo-QMF bank; Parks-McClellan equiripple design procedure; approximation; equiripple approximate 2Mth-band lowpass filter; equiripple prototype; linear-phase spectral factor; maximum overall reconstruction error; near-equiripple performance; pseudo-QMF banks; stopband ripple; Biomedical signal processing; Filter bank; Finite impulse response filter; Frequency response; IIR filters; Image reconstruction; Kernel; Multidimensional signal processing; Multidimensional systems; Speech processing;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.651218

Filename

651218