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M. Pfister, M. Gröschl, P. Reiter, R. Wehr, M. Conter:
"Impact of gaps on in situ airborne sound insulation of noise barriers";
Talk: 6th Congress of the Alps-Adria Acoustics Association, Graz/Stmk.; 10-16-2014; in: "Proc. 6th Congress of the Alps-Adria Acoustics Association, Graz/Austria (16. - 17.10.2014), el", (2014), Paper ID el. Paper, 8 pages.

Noise barriers are a commonly used measure to shield residential neighbourhoods from the noise of heavily
used roads. The assessment of these noise reduction measures is regulated by a number of standards, one of which is
the European series of standards EN 1793 "Road traffic noise reducing devices -- Test method for determining the
acoustic performance". Unfortunately, not all barriers are constructed with the necessary care and sometimes gaps
between elements are left open. The aim of this study is to examine the sound transmission through these faults both
numerically and experimentally. For the numerical treatment the boundary element method (BEM) that is especially
suited for externally unconfined problems is used. The experimental part consists of measurements according to the
standard EN 1793-6 [1] that are carried out at a noise barrier test facility. Finally the results obtained from the
simulations and the measurements are compared

noise barrier, adrienne method, boundary element method