OVERVIEW OF SOME INTERESTING APPLICATIONS OF SOUND INTENSITY METHOD FOR THE DETERMINATION OF THE SOUND POWER RADIATED BY INDUSTRIES

The aim of this presentation is to show how the sound intensity technique could be advantageously used for the sound power level determination of building elements, which can or can not influence noise levels in the environment. Depending on the nature and temporal characteristic of the noise, the sound intensity technique could be used not only to directly determine sound emissions radiated by building elements but also to evaluate, much more precisely than conventional methods, in-situ sound insulation of specific building elements. Other interesting advantages of this method are the comparison of the in-situ insulation of building elements with laboratory measurements where flanking has been cancelled, the ranking of partial contributions of building elements by comparing them with the total sound power radiated by a large hall, the determination of the sound insulation of building elements before and after specific measures, the computation of noise maps based on sound power levels of building elements. In this paper, we will present some interesting cases where this technique has been successfully used for small industries as well as large industrial halls with a lot of different building elements.