A sound localization system based on biological analogy

Author

Bhadkamkar, Neal ; Fowler, Boyd

Author_Institution

Dept. of Electr. Eng., Stanford Univ., CA, USA

fYear

1993

fDate

1993

Firstpage

1902

Abstract

A low-power analog VLSI system that implements a model of sound localization in the horizontal plane is designed, fabricated, and tested. The model uses the time difference between a sound arriving at each ear to determine the location of the sound source. The system consists of two chips in a standard 2 μm, p-well CMOS process. One chip contains circuitry to model left and right side cochleas, hair cells, and auditory neurons, while the other chip contains circuitry to model the binaural cross-correlation activity of neurons in the superior olive of the brain stem. Measured test results reveal challenges that must be overcome in order to obtain reliable products

Keywords

CMOS integrated circuits; VLSI; acoustic signal processing; acoustic variables measurement; analogue processing circuits; biological techniques and instruments; hearing; neural nets; 2 micron; auditory hair cells; auditory neurons; binaural cross-correlation activity; biological analogy; brain stem superior olive; cochleas; horizontal plane; low-power analog VLSI system; p-well CMOS process; sound localization system; time difference; Acoustic testing; Biological system modeling; Brain modeling; CMOS process; Circuit testing; Ear; Neurons; Semiconductor device modeling; System testing; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Networks, 1993., IEEE International Conference on

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-0999-5

Type

conf

DOI

10.1109/ICNN.1993.298847

Filename

298847