Sound projection system

Details Sound projection system Sound projection system

1977-09-16

1980-01-01

Tomsky, Stephen J.

Acoustics

Sound-modifying means

Intensifying horn

181159, G10K 1100, G10K 1300

Patent

active

041811933

ABSTRACT:
A sound projection system comprising means defining a longitudinally extending acoustic channel which is acoustically open at a front end of the channel and acoustically closed at a rear end and at sides of the channel, a loudspeaker having a cone diaphragm operating into the channel at the rear end of the channel, and a longitudinally extending member mounted within the channel directly in front of, and in alignment with, the loudspeaker so as to restrict the free space within the channel, the cross-sectional area of said member varying along its length.

REFERENCES:
patent: 1690840 (1928-11-01), Round
patent: 1711939 (1929-05-01), Graff
patent: 1767679 (1930-06-01), Hutchison
patent: 2058208 (1936-10-01), Blattner
patent: 3866710 (1975-02-01), Cesati

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