Panel-form loudspeakers

H - Electricity – 04 – R

Patent

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Details

H04R 9/06 (2006.01) H04R 7/04 (2006.01) H04R 7/06 (2006.01)

Patent

CA 2295007

A loudspeaker comprises a panel member (11, 21, 31, 41, 61, 71, 81, 91) as resonant acoustic radiator relying on bending wave action and a driver (12, 22, 32, 42, 62, 72, 82, 92) coupled to the panel member to cause bending waves therein. The panel member has its mass and/or bending capability of the panel member locally altered or otherwise different, particularly locally of the driver as coupled to the panel member. Local holes (16, 26, 36, 46), affixed mass (66) or affixed damping material (76) are effective to reduce high frequency due to drumming effects at the driver coupling (17, 37, 47, 67, 77, 87).

L'invention concerne un haut-parleur comprenant un élément de panneau (11, 21, 31, 41, 61, 71, 81, 91) comme source de rayonnement acoustique résonnant s'appuyant sur une action d'onde de flexion et un organe d'entraînement (12, 22, 32, 42, 62, 72, 82) couplé à l'élément de panneau pour y provoquer des ondes de flexion. L'élément de panneau possède une masse et/ou une capacité de flexion modifiées localement ou différentes, notamment localement par rapport à l'organe d'entraînement couplé à l'élément de panneau. Des trous localisés (16, 26, 36, 46) une masse (66) fixe ou une matière d'amortissement (76) fixe réduisent efficacement une haute fréquence due à des effets de tambourinage au point de couplage (17, 37, 47, 67, 77, 87) de l'organe d'entraînement.

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