Acoustical screens: Rating and classification (NT ACOU 085)

Abstract

This Nordtest method gives methods for rating and classifying the sound attenuation and the sound absorption of screens intended for use in large rooms without partitions in order to increase speech privacy or noise insulation between working positions. Rating and classification according to this method simplifies the comparison and the choice between different types of screens. In Annex A some guidelines on the practical applications of this Nordtest method are given. The classification obtained according to this method is particularly valid in those practical situations where the screens are used to separate two nearby workstations with seated workers. In other cases the directivity of the actual sound source and the sound transmission properties of the screen may produce screen sound attenuation values not covered by the rating and classification of this Nordtest method.