Noise absorbing device

Details Noise absorbing device Noise absorbing device

1977-06-23

1979-08-07

Godici, Nicholas P.

Acoustics

Sound-modifying means

Sound absorbing panels

181288, E04B 199

Patent

active

041634799

ABSTRACT:
The present noise absorbing or damping devices are shaped as funnels or horns of various configurations which may be coiled, spiraled, rolled and/or bent or twisted. The open funnel mouth of each funnel faces toward the source of the noise. The volume confined by the funnel walls may be filled with noise absorbing material such as an open cell foam. Preferably at least the funnel neck is filled with such material. A plurality of funnels may be arranged on the walls of a room and the funnel mouths facing into the room may be covered with blankets or mats of noise absorbing material.

REFERENCES:
patent: 1791232 (1931-02-01), Borkenstein
patent: 2293181 (1942-08-01), Terman
patent: 2674336 (1954-04-01), Lemmerman
patent: 2840179 (1958-06-01), Junger
patent: 2887173 (1959-05-01), Boschi
patent: 3887031 (1975-06-01), Wirt

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