Audibility earplug

Details Audibility earplug Audibility earplug

1990-05-07

1992-05-19

Adams, Russell E.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181135, A61B 702

Patent

active

051139677

ABSTRACT:
An earplug uses damping to render unimportant a Helmholtz resonance between the acoustic mass intrinsic to a sound channel thereof and the compliance of air in the earcanal, in combination with a readily manufacturable external structure coupled to the sound channel to increase response characteristics at higher frequencies in a predictable and well controlled manner in order to provide a highly desireable uniform frequency response.

REFERENCES:
patent: 4540063 (1985-09-01), Ochi et al.
patent: 4807612 (1989-02-01), Carlson
patent: 4852683 (1989-08-01), Killion

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