LAUSR

architectural acoustics. Currently, the architectural acoustic community faces ever changing challenges that require innovative approaches to absorb sound. Due to the importance of day lighting in sustainable design certification, such as LEED, and the concern about particulate material from fiberglass and mineral wool, there has developed a need for transparent and translucent absorptive materials that do not require the use of fibrous porous absorption. One approach has been the development of microperforated and microslit foils and panels with sub-millimeter openings that provide significant viscous losses when spaced from a boundary. In addition, opaque FSC certified, AWI Premium Grade, Class A fire rated microperforated veneered wooden panels have also been enthusiastically accepted by architects, since the microperforations are relatively invisible at normal viewing distances. The theoretical absorption mechanism of microperforated and microslit surfaces is well documented in the literature and comp...