In feedback active noise/vibration control systems, the performance depends on the predictability of the primary disturbance, and the predictability of a random process in turn depends on the characteristics of the random process and the length of the adaptive filter. Modeling error may result in the presence of constructive interference in some frequency bands while the desired destructive interference is being achieved in other frequency bands. This paper proposes a technique that alleviates the constructive interference and reduces the computational complexity at the same time by selective adaptation in the frequency domain. Our experiments in a real time active vibration control system show the effectiveness of the proposed method.