Methods and device for attenuating spurious noise

Details Methods and device for attenuating spurious noise Methods and device for attenuating spurious noise

1983-09-09

1986-06-10

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

367901, 381 71, H04B 106

Patent

active

045946957

ABSTRACT:
A method and device for attenuating wideband spurious noises to improve the signal-to-noise ratio of a tracked acoustic signal. Two sensors (1 and 2) are provided, one of which receives the disturbed tracked signal and the other the spurious noises, to feed a plurality of correlation modules (4) via as many spectrum-line filters (3) distributed throughout the useful bandwidth of sensor (1), each of said correlation modules (4) supplying a correction signal and the sum of said correction signals being subtracted from the signal given by sensor (1) to yield a noise-free tracked signal. The invention is applicable to acoustic reception systems used in noisy environments.

REFERENCES:
patent: 4232381 (1980-11-01), Rennick et al.

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