On the acoustic effect of screens and perforated facings

摘要

This paper presents a discussion on the acoustical effects on absorptive treatments located behind visual screens and perforated facings. All facings will have some acoustic effect. It is desirable to know what effect a facing may have. It may not be significant at the frequencies of interest, that is, acoustically transparent, or it may not be insignificant. This paper discusses some prediction methodologies for both visual screens and perforated facings and compares outcomes with reported measurements. It concludes with some questions which at present (to this author) remain unanswered.