AER EAR: A Matched Silicon Cochlea Pair With Address Event Representation Interface

Author

Chan, Vincent ; Liu, Shih-Chii ; Van Schaik, André

Author_Institution

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

Volume

54

Issue

1

fYear

2007

Firstpage

48

Lastpage

59

Abstract

In this paper, we present an analog integrated circuit containing a matched pair of silicon cochleae and an address event interface. Each section of the cochlea, modeled by a second-order low-pass filter, is followed by a simplified inner hair cell circuit and a spiking neuron circuit. When the neuron spikes, an address event is generated on the asynchronous data bus. We present the results of the chip characterization and the results of an interaural time difference based sound localization experiment using the address event representation (AER) EAR. The chip was fabricated in a 3-metal 2-poly 0.5-mum CMOS process

Keywords

CMOS analogue integrated circuits; ear; low-pass filters; neural nets; 0.5 micron; CMOS process; address event representation interface; analog integrated circuit; chip characterization; inner hair cell circuit; interaural time difference; matched silicon cochlea pair; neuromorphic engineering; second-order low-pass filter; sound localization; spiking neuron circuit; Biological system modeling; Circuits; Ear; Low pass filters; Neuromorphics; Neurons; Protocols; Silicon; Timing; Transmitters; Analog integrated circuits; neuromorphic engineering; silicon cochlea; sound localization;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2006.887979

Filename

4061005