Design of lattice wave digital filter banks

Author

Vollmer, Jürgen

Author_Institution

German Nat. Res. Center for Inf. Technol., St. Augustin, Germany

Volume

2

fYear

1998

fDate

1-4 Nov. 1998

Firstpage

1378

Abstract

A lattice wave digital filter (LWDF) is a two-port modeled after a classic lattice filter. LWDFs derived from lossless lattice filters are inherently branching filters. Applying a simple transform to the transfer functions of a pair of proper prototype filters leads to a complete filter bank design. An example for such a design using LWDFs, an octave filter bank, is given. The magnitude of the sum of all transfer functions can be forced to be one. Unfortunately, the transformation increases the number of delays very fast. In this paper, it is shown how to reduce the number of delays with an analytic method.

Keywords

channel bank filters; delays; lattice filters; network synthesis; transfer functions; two-port networks; wave digital filters; branching filters; delay reduction; filter bank design; lattice wave digital filter banks; lossless lattice filters; octave filter bank; prototype filters; transfer functions; transform; two-port network; Bandwidth; Delay; Digital filters; Filter bank; Frequency; IIR filters; Lattices; Passband; Prototypes; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-5148-7

Type

conf

DOI

10.1109/ACSSC.1998.751552

Filename

751552