Signal processing circuit

Details Signal processing circuit Signal processing circuit

1973-10-16

1980-03-25

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

Responsive to intruder energy

367901, 455305, H04B 112

Patent

active

041953606

ABSTRACT:
In sound target detection equipment, at least three microphones are used in a broadside array manner to ascertain the presence of a selected sound source. The outputs of the three microphones all include the sought signal S and respectively contain noise components X, U and Y. These outputs are combined to provide X-U and X-Y. These two signals are then applied as separate inputs to a discriminator which applies the rules:

REFERENCES:
patent: 3854117 (1974-12-01), Fothergill

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