perforated facing

perforated facing

In an acoustical assembly, any flexible or rigid perforated sheet or board designed as a protective surface allowing free access of sound to an underlying layer of sound-absorptive material.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Absorption Characteristics of Acoustic Material with Perforated Facings. The Journal of the Acoustical Society of America, Vol.