Apparatus for the retroreflection of sound

Details Apparatus for the retroreflection of sound Apparatus for the retroreflection of sound

1979-12-21

1981-12-01

Hix, L. T.

Acoustics

Sound-modifying means

Sound absorbing panels

181224, 181292, E04F 1704, E04B 182, G10K 1120

Patent

active

043031447

ABSTRACT:
A noise control device which relies upon retroreflection for sound attenuation. The device comprises an array of corner reflectors recessed into a surface and forming a sound retroreflecting panel. This cavitated surface provides the desired retroreflection of impinging sound waves so as to preclude undesirable onward propagation. The invention is particularly suitable for noise control applications in the presence of severe environmental conditions, and may also be used in combination with sound absorbing materials.

REFERENCES:
patent: 2549189 (1951-04-01), Gabo
patent: 3035657 (1962-05-01), Lemon
patent: 3593819 (1971-07-01), Giraudeau
patent: 4094379 (1978-06-01), Steinberger
patent: 4141433 (1979-02-01), Warnaka

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