Active noise control device comparing peak frequencies in impedance frequency characteristics

A vehicle comprising an active noise control device that causes an actuator to output a canceling sound based on a control signal in order to reduce noise in a vehicle compartment of the vehicle, the active noise control device comprising one or more processors that execute computer-executable instructions stored in a memory, wherein the one or more processors execute the computer-executable instructions to cause the active noise control device to:

• generate the control signal by performing a filtering process on a reference signal corresponding to the noise, by a first adaptive filter;
• identify a peak frequency in an impedance frequency characteristic that is a frequency characteristic of impedance of the actuator;
• store an initial peak frequency that is the peak frequency in the impedance frequency characteristic in an initial state;
• determine whether or not a difference between the currently identified peak frequency and the stored initial peak frequency is greater than or equal to a threshold value;
• and
• change a characteristic of the generated control signal when it is determined that the difference is greater than or equal to the threshold value.