Acoustic sensor and electrical circuits therefor

An acoustic sensor assembly that produces an electrical signal representative of an acoustic signal, includes an acoustic transduction element disposed in a housing and acoustically, a heat source causing air pressure variations within the housing when energized, and an electrical circuit electrical...

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Bibliographische Detailangaben
Hauptverfasser:	Pedersen, Michael, Cradock, Stephen, Dektor, Shandor
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING PHYSICS PUBLIC ADDRESS SYSTEMS TESTING
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Beschreibung
Zusammenfassung:	An acoustic sensor assembly that produces an electrical signal representative of an acoustic signal, includes an acoustic transduction element disposed in a housing and acoustically, a heat source causing air pressure variations within the housing when energized, and an electrical circuit electrically coupled to the acoustic transduction element and to contacts on an external-device interface of the housing, wherein the electrical circuit is configured to energize the heat source and determine a non-acoustic condition or change therein based on an amplitude of air pressure variations detected by the acoustic transduction element.