Lightweight acoustical system

Details Lightweight acoustical system Lightweight acoustical system

2006-03-14

2006-03-14

Dang, Khanh (Department: 2111)

Acoustics

Sound-modifying means

Sound absorbing panels

C181S286000

Reissue Patent

active

RE039010

ABSTRACT:
An improved acoustical system for inhibiting noise in a motor vehicle. The system comprises an impermeable layer and an underlayment adjacent to the impermeable layer. The underlayment includes a first fibrous layer and a second fibrous layer. The underlayment has an airflow resistance between about 2000 and about 5000 mks Rayls.

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