Title :
A sound localization system based on biological analogy
Author :
Bhadkamkar, Neal ; Fowler, Boyd
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
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;
Conference_Titel :
Neural Networks, 1993., IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0999-5
DOI :
10.1109/ICNN.1993.298847
