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Hardware implementation of a PCA learning network by an asynchronous PDM digital circuit

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2 Author(s)
Hirai, Y. ; Inst. of Inf. Sci. & Electron., Tsukuba Univ., Ibaraki, Japan ; Nishizawa, K.

We have fabricated a PCA (principal component analysis learning network in a FPGA (field programmable gate array) by using an asynchronous PDM (pulse density modulation) digital circuit. The generalized Hebbian algorithm is expressed in a set of ordinary differential equations and the circuits solve them in a fully parallel and continuous manner. The performance of the circuits was tested by a network with two microphone inputs and two speaker outputs. By moving a sound source right and left in front of the microphones, the first principal weight vector could continuously track the sound direction in real time

Published in:

Neural Networks, 2000. IJCNN 2000, Proceedings of the IEEE-INNS-ENNS International Joint Conference on  (Volume:2 )

Date of Conference:

2000

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