Loudspeaker system for producing coherent sound

Details Loudspeaker system for producing coherent sound Loudspeaker system for producing coherent sound

1981-08-07

1984-04-03

Tarcza, Thomas H.

Acoustics

Plural diaphragm sound sources

With sound-asborbing means

181153, H04R 128

Patent

active

044402597

ABSTRACT:
A loudspeaker apparatus is provided for producing time and phase-coherent sound waves, substantially hemispherical in shape, directed toward a listening area. The loudspeaker apparatus includes a simply-constructed, inverted speaker cone designed to produce primarily low and medium frequencies, a high frequency speaker uniquely positioned above and behind the axis of the cone to supplement the high frequencies, and absorbing material disposed inter alia at a rear portion and at the smaller end of the cone to produce the hemispherical-shaped sound waves and direct them toward the listening area.

REFERENCES:
patent: 3076520 (1963-02-01), Farwell
patent: 3424873 (1969-01-01), Walsh
patent: 3477540 (1969-11-01), Rizo-Patron
patent: 3816672 (1974-06-01), Gefvert et al.
patent: 3935402 (1976-01-01), Gersten
patent: 4134471 (1979-01-01), Queen
patent: 4157741 (1979-06-01), Goldwater
patent: 4182429 (1980-01-01), Senzaki
Julie, Minimizing Interference Effects in Tweeters and Tweeter-Woofer Combinations, IEEE Transactions on Audio, Mar.-Apr. 1964, pp. 30-35.

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