Title :
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
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;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1011464
