Active oscillation noise control device, active oscillation noise control method, and active oscillation noise control program

Provided is an active oscillation noise control device, which acquires an error signal from at least one or more microphones, which corresponds to an offset error between a control sound emitted from a plurality of speakers and an oscillation noise, and actively controls the oscillation noise. A reference signal generation means generates a reference signal on the basis of an oscillation noise frequency in the oscillation noise. An adaptive notch filter means generates a control signal which is outputted to each of the plurality of speakers by using a filter coefficient for the reference signal. A comparison signal generation means generates a comparison signal from the reference signal on the basis of a plurality of propagation characteristics from the plurality of speakers to the at least one or more microphones. A filter coefficient updating means updates the filter coefficient used in the adaptive notch filter means such that the error signal is minimized. Then a control means alters the amplitude of a control signal of the plurality of speakers on the basis of the similarity between each of the plurality of propagation characteristics and the characteristics of the oscillation noise. It is thus possible to ensure a noise reduction effect regardless of the characteristics of the oscillation noise.