Austrian investigation on the influence of sound leakage in noise reducing devices

Marco Conter, Manfred Haider
2008 Journal of the Acoustical Society of America  
Acoustics 08 Paris 1447 Noise barriers are the most widely used means for road traffic noise abatement. Sound absorption and sound insulation are the key properties for noise barrier elements. The standard method of determining these properties by reverberation room measurements has recently been complemented by an in-situ method following CEN/TS 1793-5, also known as Adrienne method. This method allows flexible assessment of the acoustic performance of noise barriers in almost arbitrary places
more » ... st arbitrary places by means of mobile measurement equipment. Using the possibility to perform in-situ measurements the authors have investigated the presence of sound leakage due to structural imperfections which limit the sound insulation performance of noise barriers. This paper summarizes the results of Austrian research on different kinds of barriers regarding the difference in sound insulation between measurements carried out in front of the supporting post (where leakage is likely to occur) and in the middle of the barrier. A statistical correlation of the data was also performed. Acoustics 08 Paris
doi:10.1121/1.2933112 fatcat:xsi25tostnd3xeubuekvi6uihe