Analogue VLSI Implementations of Two Dimensional, Nonlinear, Active Cochlea Models

被引：6

作者：

Hamilton, Tara Julia ^{[1
]}

Tapson, Jonathan ^{[2
]}

Jin, Craig ^{[3
]}

van Schaik, Andre ^{[3
]}

机构：

[1] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia

[2] Univ Cape Town, Sch Elect Engn, Cape Town, South Africa

[3] Univ Sydney, Sch Elect & Informat Engn, Sydney, NSW 2006, Australia

来源：

2008 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE - INTELLIGENT BIOMEDICAL SYSTEMS (BIOCAS) | 2008年

关键词：

silicon cochlea; auditory modelling; Hopf oscillator; log-domain circuits;

D O I：

10.1109/BIOCAS.2008.4696897

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

This paper presents results from integrated circuit (IC) implementations of the active, nonlinear, two dimensional (2D) silicon cochlea. It begins by developing an active, 2D cochlea model which is based on the idea that the cochlear amplifier (CA) has dynamics governed by the Hopf equation. The realisation of the active 2D model leads to several hardware implementations that are based on two slightly different but equivalent approaches. The first implementation is called Automatic Quality Factor Control (AQC) which has the dynamics of a system that is governed by the Hopf equation and represents a type of parametric amplification. The second approach is based on implicitly modelling the Hopf equation as a Hopf oscillator. Together this work provides the foundations for a silicon cochlea that can be used to better understand the biological cochlea as well as explore higher auditory centres.

引用

页码：153 / +

页数：2

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