Communications – electrical: acoustic wave systems and devices – Receiver circuitry
Patent
1997-12-08
2000-05-02
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Receiver circuitry
H04B 106
Patent
active
060580763
ABSTRACT:
The present invention generally relates to procedures and apparatus for monitoring incoming signals to detect the presence of selected target signals contained within the universe of signals received. More particularly, the present invention is directed to monitoring audio signals to detect selected ultrasonic and sonic signals in an ambient environment. Thus, the present invention is even more specifically directed to leak detectors and bearing wear indicators and methods for detecting sound signals which either travel in the air or are present in solids.
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Henson Michael R.
Martin Timothy J.
Pihulic Daniel T.
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