IMPROVED AUDIO DISTRIBUTION SYSTEM

A signal distribution and communication arrangement controls the broadcast of different types of signals through speakers located in various zones. The system includes a telephone interfaced with a door speaker controller to allow communication between the telephone and a door speaker. A page may be...

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Bibliographische Detailangaben
Hauptverfasser:	FARINELLI ROBERT P, STEVENSON BRUCE B, UNSELD BILL R
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:	A signal distribution and communication arrangement controls the broadcast of different types of signals through speakers located in various zones. The system includes a telephone interfaced with a door speaker controller to allow communication between the telephone and a door speaker. A page may be broadcast over the speakers and subsequently muted to allow private communication when the page is answered. Also included is a doorbell interface circuit that responds to a doorbell source. The doorbell source may be activated by any one of a plurality of doorbell switches.