Multi-channel signal separation

Details Multi-channel signal separation Multi-channel signal separation

1991-08-28

1993-05-04

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

367901, 367125, 367126, G01S 1500

Patent

active

052087867

ABSTRACT:
A system separates unknown signals which have been combined together through unknown linear filters and for which observations at multiple sensors are made. In a two channel circuit with two inputs and two sensors, the reconstructed source signals are assumed to be decorrelated such that the cross-correlation between the reconstructed source signals is near zero. The transfer functions which represent the crosstalk processes are estimated. The output signals are detected and the transfer functions are recursively solved. A reconstruction filter is used to recover the original input signals.

REFERENCES:
patent: 3935574 (1976-01-01), Pentheroudakis
patent: 4283795 (1981-08-01), Steinberger
patent: 4320535 (1982-03-01), Brady et al.
patent: 4473906 (1984-09-01), Warnaka et al.
Widrow et al., "Adaptive Noise Canceling: Principles and Applications," Proc. IEEE, 63:1692-1716, 1975.

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