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US 7,095,863 B2Granted
Panel form loudspeaker
AssigneeQinetiq Limited
InventorsKenneth Harry Heron, Malcolm Nash, Andrew Philip Payne
Life of this patent
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Abstract
A panel form loudspeaker comprises a resonant multi-mode radiator (11) which in turn comprises a plurality of substantially concentric sub-panels (20, 21, 22, 23). A plurality of analogue drivers (10) drive the radiator (11), one or more of the drivers being operational at any time. A signal level measured at the input to the loudspeaker determines the operational state of each of the drivers (10). The concentric sub-panels may take various shapes and have different areas.
Claims13
A panel form loudspeaker comprising a resonant multi-mode radiator;
- the radiator having a plurality of substantially concentric sub-panels each sub-panel having positioned thereon at least one analogous driver;
- a control processor responsive to an input signal, the control processor providing each driver with a drive signal defining an operational state of each driver
- wherein the operational state of each driver is controlled independently from that of at least one other driver;
- and wherein the relative operational state of each driver is determined according to an amplitude level of the input signal.
1 more element
Dependencies are inferred from the claim text.