On the use of Inverse BEM for deriving Equivalent Acoustical Source Models

摘要

This paper considers inverse boundary element calculations for deriving equivalent acousticalrnsource models, which for instance can be used in the context of airborne transfer pathrnanalysis. A regularisation scheme based upon the 1-norm is presented allowing to computingrna sparse surface volume velocity distribution for the boundary element model. As arnconsequence, an equivalent acoustical model represented by a hard surface model including arnlimited number of point sources on this surface may be derived. A simple test case showsrnhow this inverse technique leads to detecting the number of point sources including theirrnposition and the source strength in terms of volume velocity.