Panel-form loudspeaker

Details Panel-form loudspeaker Panel-form loudspeaker

H - Electricity

04

R

H04R 1/02 (2006.01) H04R 7/04 (2006.01) H04R 7/06 (2006.01)

Patent

CA 2273936

To overcome acoustic distortion caused by local resonance in panel core cells, a resonant multi-mode radiator element is provided for a panel form loud speaker with a functional upper frequency limit fmax. The element has skins and a cellular based core, the skins have a thickness h, a Young's modulus E a Poisson's ratio of V and a material density , and the core has a cell size lcell characterized in that the cell size lcell is less than (I).

Pour parer à la distorsion acoustique causée par une résonnance locale qui se produit dans les cellules de la partie centrale du panneau, l'invention propose un élément rayonnant multimode résonnant pour un haut-parleur en forme de panneau, d'une limite de fréquence supérieure fonctionnelle f¿max?. Ledit élément est doté de membranes et d'une partie centrale de base cellulaire, les membranes ayant une épaisseur h, un module de Young E, un rapport de Poisson V et une densité de matière ?; la partie centrale se caractérise par une taille de cellule lcell inférieure à (I).

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