A 2-digit multidimensional logarithmic number system filterbank for a digital hearing aid architecture

Author

Li, H. ; Jullien, G.A. ; Dimitrov, V.S. ; Ahmadi, M. ; Miller, W.C.

Author_Institution

VLSI Res. Group, Windsor Univ., Ont., Canada

Volume

2

fYear

2002

fDate

2002

Abstract

This paper addresses the design and implementation of a filterbank for digital hearing aids using a multi-dimensional logarithmic number system (MDLNS). The logarithmic properties of the MDLNS allow for reduced complexity multiplication, and large dynamic range, and a multiple-digit MDLNS provides a considerable reduction in hardware complexity compared to a conventional logarithmic number system (LNS) approach. In this paper we discuss the design and implementation of both a 1-digit and 2-digit 2-D MDLNS filterbank and provide initial simulation results

Keywords

CMOS digital integrated circuits; FIR filters; biomedical electronics; circuit simulation; digital arithmetic; hearing aids; integrated circuit design; multidimensional digital filters; multidimensional signal processing; 0.18 μm CMOS test chip; 0.18 micron; 2-digit multidimensional logarithmic number system filterbank; completely-in-canal device; digital hearing aid architecture; digital signal processing; finite impulse response filterbank; hardware complexity reduction; large dynamic range; low power consumption; reduced complexity multiplication; simulation results; Auditory system; Circuits; Digital signal processing; Dynamic range; Filter bank; Finite impulse response filter; Hearing aids; Multidimensional systems; Noise figure; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on

Conference_Location

Phoenix-Scottsdale, AZ

Print_ISBN

0-7803-7448-7

Type

conf

DOI

10.1109/ISCAS.2002.1011464

Filename

1011464