Acoustic device comprising a panel member relying on bending...

H - Electricity – 04 – R

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Details

H04R 7/06 (2006.01) H04R 7/04 (2006.01) H04R 29/00 (2006.01)

Patent

CA 2317550

Acoustic devices rely on bending wave action in a panel member, particularly distribution of resonant modes of such bending wave action and related acoustically significant surface vibration over area of said panel member favourable to desired or at least acceptable acoustic device performance. The devices comply with selecting parameters of said panel member affecting said distribution, including configuration/geometry and/or bending stiffness(es), and/or location(s) of bending wave transducer(s) in said area of said panel member; the selecting being in accordance with analytical assessment of power transfer related characteristic(s) of said panel member thus said acoustic device concerned and desiderata therefor correlating with achieving said acoustic device performance.

La présente invention concerne des dispositifs acoustiques réagissant à une onde de flexion affectant un panneau, en particulier à la répartition de modes résonnants d'une telle onde de flexion, et à une vibration superficielle acoustiquement importante dans une zone du panneau considéré et susceptible de contribuer à un fonctionnement attendu ou au moins acceptable du dispositif acoustique. Ces dispositifs obéissent à des critères de sélection de panneau affectant cette distribution, et notamment à des critères régissant la configuration ainsi que la géométrie, la rigidité à la flexion, et/ou les emplacements de transducteurs d'onde de flexion dans la zone considérée du panneau. Cette sélection s'effectue en fonction de l'évaluation analytique de caractéristiques liées au transfert de puissance du panneau considéré, ce qui permet d'établir des corrélations entre d'une part le dispositif acoustique concerné et des attentes s'y rapportant, et d'autre part l'accomplissement d'un rendement fonctionnel du dispositif acoustique considéré.

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