Active vibration noise control apparatus

An active vibration noise control apparatus comprising:

• a font road wheel vibration detecting unit for detecting a front road wheel vibration based on a road input to a front road wheel of a vehicle and outputting a front road wheel reference signal representing the detected front road wheel vibration;
• a vehicle speed detecting unit for detecting a vehicle speed of the vehicle;
• a delay time calculating unit for determining a delay time which represents a difference between times at which the front road wheel and a rear road wheel thereof pass through one spot;
• a rear road wheel reference signal output unit for outputting a rear road wheel reference signal representing a predicted rear road wheel vibration which is a delayed front road wheel vibration for the delay time;
• a canceling sound output unit for outputting, based on the front road wheel reference signal, a front road wheel canceling sound for canceling a front road wheel vibration noise due to the front road wheel vibration at a sound silent target position, and for outputting, based on the rear road wheel reference signal, a rear road wheel canceling sound for canceling a rear road wheel vibration noise due to the predicted rear road wheel vibration at the sound silencing target position;
• and
• a steered state detecting unit for detecting a steered state of the vehicle;
• wherein the canceling sound output unit suppresses output of the rear road wheel canceling sound when the canceling sound output unit detects that a path followed by the front road wheel and a path followed by the rear road wheel are different from each other based on the steered state.