Ceiling-mounted loudspeaker

Details Ceiling-mounted loudspeaker Ceiling-mounted loudspeaker

1993-12-20

1994-10-25

Gellner, M. L.

Acoustics

Diaphragm and enclosure

Recessed

181152, 181153, 181155, 181156, H05K 500

Patent

active

053591585

ABSTRACT:
A ceiling-mounted loudspeaker includes upper and lower sound-directing structures having walls acting as a radial horn to provide a wide included angle of coverage for sound energy generated by a loudspeaker driver assembly having a piston for directing generated sound energy upwardly into the horn. The lower structure further has a continuously convex bottom configured and dimensioned to define a diffraction path for at least some of the sound energy exiting the output mouth of the radial horn, so that the convex bottom acts as a downwardly-directed diffractor. The radial horn and convex bottom together produce an oblate spheroid of sound energy affording a substantially uniform amplitude of sound within a large finite horizontal plane at the level of a listener.

REFERENCES:
patent: 2096192 (1937-10-01), Moore
patent: 3595337 (1971-07-01), Furey et al.
patent: 4013846 (1977-03-01), Krawczak et al.
patent: 4310065 (1982-01-01), Kayman
patent: 4620317 (1985-10-01), Anderson
patent: 4832150 (1987-05-01), Just et al.
patent: 4907071 (1990-03-01), Wiley
patent: 4928788 (1990-05-01), Erickson

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