抄録
An active noise control system using the gradient based adaptive algorithm without a model of the secondary path is proposed. The cost function of this adaptive system is a square sum of the cross-correlation coefficient of the input noise and the output error signal. Importantly, this system is composed of single transversal adaptive filter that estimates the inverse transfer function of the secondary path and the transfer function of the primary path at the same time. A new gradient based adaptive algorithm and its fast version using only the input signal and the output error signal are formulated, then the above mentioned analytical results are verified by computer simulation.
