CTMedia paper published in Journal of Sound and Vibration

A paper by the CTMedia La Salle researchers Dr. Oriol Guasch and Àngels Aragonès has been published in the May issue of the Journal of Sound and Vibration. The paper is entitled  “Finding the dominant energy transmission paths in statistical energy analysis “ .

Complete reference:

Oriol Guasch and Àngels Aragonès;  “Finding the dominant energy transmission paths in statistical energy analysis” , Journal of Sound and Vibration 330 (10), pp. 2325-2338.

Abstract: A key issue for noise, vibration and harshness purposes, when modelling the vibroacoustic behaviour of a system, is that of determining how energy is transmitted from a given source, where external energy is being input, to a target where energy is to be reduced. In many situations of practical interest, a high percentage of the transmitted energy is driven by a limited set of dominant paths. For instance, this is at the core of the existence of transmission loss regulations between dwellings. In this work, it is shown that in the case of a system modelled with statistical energy analysis (SEA), the problem of ranking dominant paths can be posed as a variation of the so-called K shortest path problem in graph theory. An algorithm for the latter is then modified and adapted to obtain the sorted set of K dominant energy transmission paths in a SEA model. A numerical example to show its potential for practical applications is included.