Cochlear models implemented with linearized transconductors

Author

Furth, Paul M. ; Andreou, Andreas G.

Author_Institution

Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA

Volume

3

fYear

1996

fDate

12-15 May 1996

Firstpage

491

Abstract

The aim of this work is the efficient implementation of linear continuous-time cochlear models such as that proposed by Liu (1992, 1993). The basic filter element, a transconductance-C integrator with no linearization, is evaluated in terms of dynamic range and power consumption. Linearized transconductors which employ source degeneration via single and multiple diffusers yield no net increase in current noise density, whereas linear range is improved eight and four times, respectively. Experimental results verify this improvement

Keywords

CMOS analogue integrated circuits; analogue processing circuits; continuous time filters; ear; hearing; hearing aids; integrating circuits; physiological models; cochlea; cochlear models; current noise density; dynamic range; linear continuous-time models; linearized transconductors; multiple diffusers; power consumption; single diffusers; source degeneration; transconductance-C integrator; Analog circuits; CMOS analog integrated circuits; CMOS process; Filter bank; MOS devices; Mirrors; Semiconductor device modeling; Transconductance; Transconductors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3073-0

Type

conf

DOI

10.1109/ISCAS.1996.541640

Filename

541640