A small analog VLSI inner hair cell model

Author

Van Schaik, André

Author_Institution

Sch. of Electr. & Inf. Eng., Sydney Univ., NSW, Australia

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

In this paper we present a simplified analog VLSI inner hair cell model, which models the main characteristics of the biological inner hair cell, i.e. (1) soft half-wave rectification, (2) low-pass filtering at 1 kHz, and (3) adaptation to sustained input. The main challenge lies in the creation of the long time constant associated with the 1 kHz low-pass filter and the adaptation. A modified current mirror structure has been used to create a nonlinear low-pass filter which has a cut-off frequency of 1 kHz or lower with reasonable component and bias values. Comparison of measurements of the biological inner hair cell and the circuit show a good agreement between the two.

Keywords

VLSI; acoustic signal processing; analogue integrated circuits; audio signal processing; biomedical electronics; hearing; hearing aids; integrated circuit design; integrated circuit measurement; integrated circuit modelling; low-pass filters; nonlinear filters; 1 kHz; bias values; biological inner hair cell; biological inner hair cell measurements; component values; long time constant; low-pass filter; low-pass filtering; modified current mirror structure; nonlinear low-pass filter cut-off frequency; simplified analog VLSI inner hair cell model; soft half-wave rectification; sustained input adaptation; Biological system modeling; Biology computing; Biomembranes; Brain modeling; Cells (biology); Circuits; Hair; Low pass filters; Neurons; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205489

Filename

1205489