Diffraction formulation for the sound radiation of a loudspeaker on a rigid convex edged shape enclosure - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2017

Diffraction formulation for the sound radiation of a loudspeaker on a rigid convex edged shape enclosure

Résumé

We present a method for calculating the sound radiation of a loudspeaker on a box-shape enclosure. This method is based on the iterative Asheim-Svensson formulation [Asheim et al. J. Acoust. Soc. Am., 2013]. In this geometrical acoustical model, the radiated sound is given by the addition of the direct sound of a baffled piston and the sound scattered by the edges of the loudspeaker enclosure. The latter are expressed in the form of multiple-order edge diffraction components. This method becomes particularly attractive at high frequencies since the maximum order required to get a correct estimation decreases with frequency. Altogether, the method becomes less costly than the Boundary Element Method (BEM) beyond a given frequency. The convergence of the method can be estimated by considering the distance traveled by the creeping wave on the enclosure instead of considering the successive orders of diffraction by each edge. An iterative formulation follows which is well-suited to slender objects such as a sound bar. Comparisons with measurements and results of a BEM calculation will be presented. [Work supported by the ANR-13-CORD-0008 EDISON 3D grant from the French National Agency of Research.]
Fichier non déposé

Dates et versions

hal-01825230 , version 1 (28-06-2018)

Identifiants

Citer

Vincent Roggerone, Étienne Corteel, Xavier Boutillon. Diffraction formulation for the sound radiation of a loudspeaker on a rigid convex edged shape enclosure. 173d meeting of the Acoustical Society of America and 8thForum Acusticum of the European Acoustics Association, May 2017, Boston, United States. pp.4034 - 4034, ⟨10.1121/1.4989304⟩. ⟨hal-01825230⟩
113 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More