Flat panel loudspeaker
AssigneeAmina Technologies Limited
InventorEgidijus Mikalauskas
Life of this patent
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Abstract
Circular flat panel loudspeaker comprising a resonant with a rear surface opposite the front surface. An exciter is provided at an axial centre of panel and coupled to the rear surface of the panel to cause the panel to vibrate, on operation of the exciter, to generate sound. A frame is provided for mounting in the surface and having the rear surface of the panel fixed thereto around the whole of the outer boundary of the panel, such that when mounted in the mounting surface and when the panel is caused by the exciter to vibrate on operation of the exciter, the outer boundary of the panel is fixed relative to the mounting surface. Means are provided to induce non-circularly symmetric distortion of natural modes of oscillation of the panel, the support frame and the exciter absent the mode distribution means
Claims20
A flat panel loudspeaker adapted to be mounted in a mounting surface, comprising:
- a resonant panel insertable into a circular opening in the mounting surface and including opposing front and rear surfaces, wherein the front surface has a substantially circular outer boundary and faces outwardly when the flat panel loudspeaker is mounted in the mounting surface;
- an exciter coupled to the rear surface of the resonant panel substantially at an axial center of the resonant panel and operable to cause the resonant panel to vibrate to generate sound;
- a support frame for mounting in the mounting surface, wherein the rear surface of the resonant panel is coupled to the support frame around substantially the outer boundary of the resonant panel, and wherein when mounted in the mounting surface and when the resonant panel is caused by the exciter to vibrate, the outer boundary of the resonant panel is fixed relative to the mounting surface;
- and
- a component coupled to the resonant panel near the exciter, proximal to the axial center of the resonant panel, to add weight to the resonant panel to induce non-circularly symmetric distortion of natural modes of oscillation of the resonant panel in response to operation of the exciter in an assembly of the resonant panel, the support frame, and the exciter that occur absent the component.
A method of mounting a flat panel loudspeaker in a mounting surface, the flat panel loudspeaker including a resonant panel insertable into a circular opening in the mounting surface and having opposing front and rear surfaces, wherein the front surface has a substantially circular outer boundary and faces outwardly when the flat panel loudspeaker is mounted in the mounting surface, and the resonant panel further having a rear surface opposite the front surface, an exciter coupled to the rear surface of the resonant panel substantially at an axial center of the resonant panel and operable to cause the resonant panel to vibrate to generate sound, a support frame for mounting in the mounting surface, wherein the rear surface of the resonant panel is coupled to the support frame around substantially the whole of the outer boundary of the resonant panel, and wherein when mounted in the mounting surface and when the resonant panel is caused by the exciter to vibrate, the outer boundary of the resonant panel is fixed relative to the mounting surface, and a component coupled to the resonant panel near the exciter, proximal to the axial center of the resonant panel, to add weight to the resonant panel to induce non-circularly symmetric distortion of natural modes of oscillation of the resonant panel in response to operation of the exciter in an assembly of the resonant panel, the support frame and the exciter that occur absent the component, the method comprising:
- forming a circular opening in the mounting surface having a diameter greater than a diameter of the outer boundary of the resonant panel;
- inserting the flat panel loudspeaker in the circular opening;
- and
- securing the support frame at the mounting surface, wherein the front surface of the resonant panel faces outwardly and is substantially flush to the mounting surface.
Dependencies are inferred from the claim text.