Coupling geometrical and integral methods for indoor and outdoor sound propagation - Validation examples

摘要

The study of the acoustic behaviour of volumes in the presence of vibrating surfaces can be done at medium and high frequencies by using a generalised Green function. This function is defined for an associated acoustic problem and is obtained by using geometrical approaches. This method called GRIM (Green Ray Integral Method) can he applied to the decoupling of connected acoustic volumes. Applications to building acoustics, to the car industry or to outdoor sound propagation problems, such as the assessment of complex noise barriers with complex environments, are also presented. Last, the study of outdoor sound propagation can be related to indoor noise prediction. [References: 34]