Optimal shadow omniphonic microphone and loudspeaker system

Details Optimal shadow omniphonic microphone and loudspeaker system Optimal shadow omniphonic microphone and loudspeaker system

1987-07-14

1989-06-06

Fuller, B. R.

Acoustics

Plural diaphragm sound sources

181145, 181147, 181148, 181153, 181199, 381 91, 381155, 381169, H05K 500

Patent

active

048363260

ABSTRACT:
The invention comprises a microphone and loud speaker system in which the components include a cylinder having a center section and an end section at each end of the center section in axial alignment with one another. The adjacent ends of the center and end sections are elliptical and lie in planes oriented at an angle of 35.degree.16' to the longitudinal axis of the module, the long axes of the ellipses are oriented at 45.degree. to horizontal. The planes of the elliptical ends are substantially isomorphic to the tympanic membrane of the human hearing structure and represent half the dihedral angle of a regular tetrahedron. All of the loudspeaker transducers are shielded by sheilding cylinders with elliptical end faces lying in planes oriented, at half the dihedral angle of a regular tetrahedron, namely, 35.degree.16' to the axes of the cylinders, with the long axes of the ellipses oriented at 45.degree. to the horizontal.

REFERENCES:
patent: 4122910 (1978-10-01), Wehner

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