Improving frame-bound-ratio for frames generated by oversampled filter banks

Author

Chai, Li ; Zhang, Jingxin ; Zhang, Cishen ; Mosca, Edoardo

Author_Institution

Dept. of Autom. Control, Wuhan Sci. & Technol. Univ., Wuhan

fYear

2008

fDate

March 31 2008-April 4 2008

Firstpage

3525

Lastpage

3528

Abstract

This paper presents a simple method to improve the frame-bounds-ratio of perfect reconstruction (PR) oversampled filter banks (FBs) by adjusting the gain of each subband filter. For a given analysis PRFB, a finite convex optimization algorithm is presented to redesign the subband gains such that the frame-bounds-ratio of the FB is minimized. The algorithm also provides an effective way to compute the frame bounds. Examples show the effectiveness of the presented method.

Keywords

channel bank filters; optimisation; signal reconstruction; signal sampling; finite convex optimization algorithm; frame-bound-ratio; oversampled filter banks; perfect reconstruction; subband filter; Algorithm design and analysis; Approximation algorithms; Automatic generation control; Filter bank; Finite impulse response filter; Frequency; IIR filters; Signal analysis; Signal processing algorithms; Systems engineering and theory; Oversampled filter banks; convex optimization; frame bounds; linear matrix inequality;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on

Conference_Location

Las Vegas, NV

ISSN

1520-6149

Print_ISBN

978-1-4244-1483-3

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2008.4518412

Filename

4518412