Sound wave attenuation device

Details Sound wave attenuation device Sound wave attenuation device

1984-07-27

1985-09-10

Fuller, Benjamin R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181132, 128152, A61B 702

Patent

active

045400636

ABSTRACT:
A sound attenuation device is disclosed which is capable of simultaneously attenuating sound waves of both high and low frequencies bands while leaving other frequencies undisturbed. The device is comprised of an outer shell having inlet and outlet apertures at its opposite ends and containing a pair of sound absorbing plates having a pair of thin sheets of a fabric of substantial air permeability and elasticity disposed therebetween and forming an air chamber between the sheets.

REFERENCES:
patent: 2487038 (1949-11-01), Baum
patent: 2619960 (1952-12-01), Reynolds

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