Sound barrier

Details Sound barrier Sound barrier

1977-02-10

1978-06-20

Watson, Robert C.

Acoustics

Sound-modifying means

Sound absorbing fence or screen

E04B 199

Patent

active

040956695

ABSTRACT:
A sound reducing panel is provided for use in construction of barriers of varying height between sources of objectionable noise and any sensitive area adjacent thereto, such as a freeway, a highway, construction or industrial operations, motors, generators, or other noise generating activity. Each panel consists of a designated number of parallel, hollow, triangular-shaped chambers, equally spaced apart and mounted on the panels in equal spaced relation relative thereto with the triangular-shaped panels opening toward the side of the panel opposing the source of objectionable noise. The mounting of the triangular-shaped chambers in spaced relation relative to the panel provides a specifically dimensioned slot along each longitudinal side of the triangular-shaped chambers opening thereinto and the slots act as side branch filters while the convergent opposite sides of the triangular-shaped chambers extending toward the noise source perform as a series of inverted accoustical horns to channel sound into the chambers through the branch filter defining slots.

REFERENCES:
patent: 3783968 (1974-01-01), Derry
patent: 3812931 (1974-05-01), Hauskins
patent: 3967693 (1976-07-01), Okawa

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