A new two dimensional nonseparable modulated filter banks

Author

Chan, S.C.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong

Volume

3

fYear

1996

fDate

7-10 May 1996

Firstpage

1546

Abstract

Due to the low design and implementation complexity of one-dimensional modulated filter banks (MFB), it is very desirable to study their nonseparable generalization to two dimensions (2D). In this paper, we introduce a new two-dimensional (2D) nonseparable generalization of the MFB. Each analysis filter is obtained by combining two shifted copies of the prototype filter. By considering a new cosine-modulation, it is found that the filterbank can achieve perfect reconstruction and has identical structure to the 1-D modulated filter banks. Bi-orthogonal and structural PR linear-phase cascade structures can also be obtained

Keywords

cascade networks; delay circuits; modulation; signal reconstruction; two-dimensional digital filters; analysis filter; biorthogonal PR linear-phase cascade structures; complexity; cosine-modulation; nonseparable generalization; one-dimensional modulated filter banks; perfect reconstruction; prototype filter; structural PR linear-phase cascade structures; two dimensional nonseparable modulated filter banks; Attenuation; Channel bank filters; Lattices; Matrices; Matrix decomposition; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on

Conference_Location

Atlanta, GA

ISSN

1520-6149

Print_ISBN

0-7803-3192-3

Type

conf

DOI

10.1109/ICASSP.1996.544095

Filename

544095