Online sound field controller design using partial model matching on the frequency domain

In this paper, a practical method to design sound field controllers, especially for noise reduction, is proposed. Spectral analysis based on correlation method is used in order to estimate frequency response of the field to control. Then the controller is tuned automatically using partial model matching on the frequency domain. The proposed method is thought to be practical since it requires only input-output data for tuning the controller instead of a mathematical model of the listening room. The effectiveness of the proposed method is examined through an experiment with a stereo audio system. The result shows that the controller designed by the proposed method succeeded about 5 [dB] attenuation of sinusoidal noise.