Key points are not available for this paper at this time.
The importance of the sound absorption of noise barriers to control the sound re ected by the barrier surfaces is wider acknowledged, but the methods currently used to evaluate this absorption are not appropriate to the actual conditions of installation and usage of the barriers or are not yet fully developed.An effective test method to be used in situ is therefore highly desirable, This paper presents some recent experiences made by the authors with the MLS method of measuring the sound absorption in situ 1, in the frame of the European project Adrienne.
Garai et al. (Wed,) studied this question.