Patent ID: 7854295

Claim:
An active noise control apparatus for suppressing a noise vibration of a panel generated by noise radiated from a noise source, the active noise control apparatus comprising: a flat-plate vibrator, which is fixed to the panel, for exciting a control vibration at the panel, the control vibration having a vibration direction opposite to a vibration direction of the noise vibration of the panel, and the control vibration being excited by the flat-plate vibrator in accordance with a control signal; a detector for detecting one of a propagation sound generated by the noise vibration of the panel and a vibration of the panel, and for outputting a result of the detecting; and a control section for generating, based on the result of the detecting by the detector, the control signal according to which the flat-plate vibrator excites the control vibration for suppressing the noise vibration of the panel, wherein the flat-plate vibrator is disposed on the panel, such that edges of the flat-plate vibrator are respectively aligned with positions on the panel where a sign, of a distribution of a bending moment of force over the panel caused by the noise vibration, reverses.