Comparison between measurement and boundary element modelization of subwoofers - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2009

Comparison between measurement and boundary element modelization of subwoofers

Résumé

At very low frequency, even large anechoic chambers can not be used to measure subwoofers accurately. A solution consists in using the Field Separation Method. This technique allows subtracting the field reflected by the measurement room walls to the measured field, thus recovering the acoustic pressure that would have been radiated under free field conditions. In this work, the Field Separation Method is used to measure two subwoofer prototypes. Results are compared to the ones given by a boundary element modelization of the subwoofers. Input velocities required for the modeling are measured by using a laser Doppler vibrometer. Comparisons are performed on the following quantities: on-axis pressure and directivity. Discrepancies between results obtained by these two methods are discussed and explained when possible.
Fichier principal
Vignette du fichier
Melon2009.pdf (303.08 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03179312 , version 1 (15-03-2024)

Identifiants

  • HAL Id : hal-03179312 , version 1

Citer

Manuel Melon, Christophe Langrenne, Olivier Thomas, Alexandre Garcia. Comparison between measurement and boundary element modelization of subwoofers. 127th Audio Engineering Society Convention, Oct 2009, New-York, USA, Unknown Region. ⟨hal-03179312⟩
23 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More