| 摘要 |
The present invention is provided with: a control signal generation unit 120 for generating a control signal on the basis of a cosine wave signal and a sine wave signal which have as the frequency thereof a control frequency specified in accordance with a vibration noise source; and a correction value updating unit for updating a correction value so as to be a value by which the signal power of an error signal is reduced, the updating performed on the basis of the relationship between: the increase or decrease in the signal power of such error signal which was obtained from residual vibration noise that remains as a result of interference noise generated on the basis of the control signal and propagated through a secondary path interfering with vibration noise emanating from the vibration noise source; and the increase or decrease in the correction value used for the correction of the control frequency. |
