An ANC apparatus (12) using so-called adaptive control is provided with a cancellation sound output means (24, 70a, 70b) which outputs front wheel cancellation sound that cancels front wheel vibration noise due to front wheel vibration at a position to be silenced on the basis of a front wheel reference signal, and outputs rear wheel cancellation sound that cancels rear wheel vibration noise due to predicted rear wheel vibration at the position to be silenced on the basis of a rear wheel reference signal, and a turning state detection means (76) which detects a turning state of a vehicle (10). When a difference in travel trajectory between a front wheel (28a) and a rear wheel (28b) is detected on the basis of the turning state, the cancellation sound output means (24, 70a, 70b) suppresses the output of the rear wheel cancellation sound.