Sound isolation plate structure

Details Sound isolation plate structure Sound isolation plate structure

1998-03-09

2000-07-04

Dang, Khanh

Acoustics

Sound-modifying means

Sound absorbing panels

181290, 181292, F01N 108

Patent

active

060824891

ABSTRACT:
A sound isolation plate structure comprises a sheet of perforated board in which a plurality of holes are formed, and cylindrical portions provided on one surface side of the perforated board to extend from peripheral portions of the holes like cylinders unilaterally, wherein pneumatic vibration systems are formed between the cylindrical portions. Accordingly, a resonance frequency of vibration systems is easily tuned by adjusting a projection amount of the cylindrical portions so as to mate with a frequency of the noise to be isolated.

REFERENCES:
patent: 3910374 (1975-10-01), Holehouse
patent: 4231447 (1980-11-01), Chapman
patent: 4310068 (1982-01-01), Erskine

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