Perforated sound absorbing panel

Details Perforated sound absorbing panel Perforated sound absorbing panel

1988-03-01

1989-05-16

Fuller, B. R.

Acoustics

Sound-modifying means

Sound absorbing panels

181286, 181293, 181294, E04B 182

Patent

active

048301400

ABSTRACT:
A perforated panel having a thickness of at least about 6 mm, for use as a sound absorbing element, especially at lacunarias. Each perforation is covered by a thin fiber cloth which is bonded to the edges of the perforation, rendering said panel element a specific acoustic flow resistance of between 1200 and 4000 Nsm.sup.-3.

REFERENCES:
patent: 1972592 (1934-09-01), Jacobson
patent: 3693750 (1972-09-01), Takkunen
patent: 4313524 (1982-02-01), Rose
patent: 4487794 (1984-12-01), Brown et al.
patent: 4671841 (1987-06-01), Stephens

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