Βι¶ΉΤΌΕΔ

Research & Development

Abstract

Acoustic treatment consisting of a standard size of module with different internal and front panel constructions has been widely used, particularly in the Βι¶ΉΤΌΕΔ, for the control of the acoustic environment of rooms such as studios, cubicles and listening rooms. Visually, this acoustic treatment has become unacceptable and so it is common practice to cover the treatment with a lightweight stretched fabric. This report considers the effects of this fabric covering on the acoustic performance of the treatment and gives the results of some experimental measurements of these effects.

It is concluded that the fabric covering has no significant effect on the performance of acoustic treatment which absorbs most of the incident sound energy. However, at high frequencies some acoustic treatments are effective reflectors of sound energy and, under these circumstances, the effects of the fabric covering can be significant.

Although only modular absorbers are considered, the results can be applied to all types of surfaces.