Benefits of operational transfer path analysis for sound engineering of rail-bound vehicles

Target-oriented sound engineering needs a detailed understanding of the sound transmission from the sound sources into the vehicle interior. From a sound engineering perspective it is not only the contributions of each sound source that are of interest but also the contributions of each link to the car-body and, moreover, the contribution of each panel inside the train. Especially the latter is of high interest for the car manufacturer due to the fact that the implementation of design changes is much easier for these components than it would be for other components with their variety of crucial requirements. The operational transfer path analysis is a multi-dimensional tool for gaining the needed insight into a very efficient way of using experimental data. Based on data of an high speed train various analyses will be illustrated and the benefits for sound engineering will be presented and discussed.