Acoustic board

Details Acoustic board Acoustic board

1994-09-07

1996-02-13

Dang, Khanh

Acoustics

Sound-modifying means

Sound absorbing panels

181288, 181292, 181293, E04B 182

Patent

active

054913101

ABSTRACT:
An acoustic board including a front panel formed with a plurality of large openings and small openings, a rear panel having a distance from the front panel, an intermediate panel fitted between the front panel and the rear panel thereby forming a front chamber between the front panel and the intermediate panel and a rear chamber between the intermediate panel and the rear panel and having a plurality of large holes and small holes, and a plurality of sound collecting devices each including a conical hood, a cover, an outer housing and a front silencer, whereby the noise can be effectively isolated from one side to another.

REFERENCES:
patent: 3819007 (1974-06-01), Wirt et al.
patent: 4600078 (1986-07-01), Wirt

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