A new formulation and design method for efficient low group delay cosine modulated filter banks

Author

Goh, B.A. ; McLernon, D.C.

Author_Institution

Sch. of Electron. & Electr. Eng., Leeds Univ., UK

fYear

2004

fDate

20-22 Oct. 2004

Firstpage

486

Lastpage

489

Abstract

This paper presents a new formulation and design method for an M-channel perfect reconstruction (PR) cosine modulated filter bank (CMFB) with an adjustable group delay. The objective is to show how far we can reduce the group delay in this proposed CMFB by using a new design method for a very high stop-band attenuation FIR low-pass prototype filter. Simulation results show that the stop-band attenuation of this proposed prototype filter can be as high as 100 dB. Finally, an example is given to demonstrate that the group delay can be reduced in this CMFB without degrading its performance in an adaptive filtering scenario.

Keywords

FIR filters; adaptive filters; channel bank filters; low-pass filters; 100 dB; CMFB; FIR low-pass prototype filter; M-channel perfect reconstruction filter; adaptive filtering; adjustable group delay filter; cosine modulated filter banks; low group delay filter banks; stop-band attenuation; Adaptive filters; Attenuation; Degradation; Delay; Design methodology; Filter bank; Finite impulse response filter; Low pass filters; Prototypes; Virtual prototyping;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Multimedia, Video and Speech Processing, 2004. Proceedings of 2004 International Symposium on

Print_ISBN

0-7803-8687-6

Type

conf

DOI

10.1109/ISIMP.2004.1434107

Filename

1434107