Noise reduction in working areas by the application of absorbing baffle-systems

Abstract

Baffle systems are arrangements of absorbing panels that allow free flow of air and therefore don't disturb the acoustic climate. This is one of the reasons why they are often used in industrial environments because there is no need to take into account aspects of thermal isolation that may be a problem with closed suspended ceilings. A method to determine the absorption coefficient of baffle systems was derived and published in 2088 (Probst W.: "Sound absorption of baffle systems", Lärmbekämpfung Nr. 2, 2008). A method is now presented how such systems can be taken into account if the acoustic behavior of even complex rooms is determined by computer modeling. For simple cases the mentioned analytical method can be applied and it is shown that the results are in good agreement with the detailed simulation. But this detailed simulation allows to determine the acoustic influence of partially covered areas with different heights and otherwise complex layouts with absorbing appliances. © 2013 Acoustical Society of America.