Acoustic coupling system

Details Acoustic coupling system Acoustic coupling system

1980-04-28

1982-04-13

Wolff, John H.

179 1C, H04H 102

Patent

active

043249515

ABSTRACT:
An acoustic coupling system for use with an audio entertainment installation aboard a commercial transportation vehicle, such as a commercial passenger aircraft, is disclosed. The system includes a plug-in terminal for acoustically coupling a pair of earphone transducers to the conventional acoustic piping outlets located at a passenger seat. A small, pocket-size housing encloses an amplifier connected to the summed outputs of the transducers. The amplifier output is variable for volume control and may be fed either to a small speaker also mounted in the housing or to a headphone set so that a passenger may listen to the audio entertainment without the need to use the acoustic headset normally provided by the commercial carrier. An alternate embodiment of the acoustic coupling system of the invention provides for two-channel stereophonic listening.

REFERENCES:
patent: 3029307 (1962-04-01), Baxt
patent: 3156771 (1964-11-01), Vaughn
patent: 3247324 (1966-04-01), Cefaly et al.
patent: 3382439 (1968-05-01), Frihart
patent: 3934674 (1976-01-01), Shore et al.
patent: 3989895 (1976-11-01), O'Daniel, Sr.

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