Electrical audio signal processing systems and devices – Hearing protectors – electrical
Patent
1983-07-22
1985-08-27
Rubinson, Gene Z.
Electrical audio signal processing systems and devices
Hearing protectors, electrical
361 75, 361 89, H02H 104
Patent
active
045382964
ABSTRACT:
A protection circuit for limiting the sound pressure level provided by transducer loads, such as headphones, in which there is provided interconnections between the input to the transducer load and the transducer load such that when loudness exceeds a predetermined limit, the connection to the transducer load is opened and the circuit turns off the audio signal to the transducer load and optionally illuminates an LED. After a predetermined time interval, the circuit automatically resets; however, if the sound pressure level has not been reduced below the predetermined limit, the circuit again immediately turns off the audio signal to the transducer load and this is continued until such time as the sound pressure level is reduced below the predetermined limit.
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Short Robert S.
Utter Mark S.
Rubinson Gene Z.
Schroeder L. C.
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