Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1973-07-09
1976-08-24
Claffy, Kathleen H.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181153, H04R 128
Patent
active
039768384
ABSTRACT:
A combination of loudspeakers, primary enclosures for individual loudspeakers, and a secondary enclosure or baffle for the entire array. The loudspeakers are preferably all of the same size, and the same is true of the primary enclosures. Although other shapes may be used to advantage, each primary enclosure is preferably a spherical shell of hard material such as metal, glass or a rigid plastic, having a diameter limited only by practical considerations to two to three times the diameter of the loudspeaker. Each such enclosure is provided with an opening in which a loudspeaker is mounted in such manner as to completely fill the opening; otherwise the primary enclosure is left unvented, although it may be provided with a capped opening for access to the speaker and wiring.
The secondary enclosure is preferably a second spherical shell, albeit of much larger diameter, and made of a similar hard material. All of the modules, each consisting of a primary enclosure and speaker, are mounted on the wall of the secondary enclosure with the speaker being tangent to the larger diameter outer spherical shell.
REFERENCES:
patent: 2632055 (1953-03-01), Parker
patent: 2915588 (1959-12-01), Bose
patent: 3719250 (1973-03-01), Maekawa
Claffy Kathleen H.
Smith, Jr. Roy H.
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