Linearization of loudspeaker systems using MINT and Volterra filters

In this paper, we propose a linearization (compensation of nonlinear distortion) method for loudspeaker systems using the MINT (multiple-input/output inverse-filtering theorem) and Volterra filters. In the proposed method, linear inverse filtering of a target loudspeaker system is realized by using the MINT so that exact linear inverse filtering can be realized. The linearization performance becomes consequently very high. On the other hand, since the conventional linearization method cannot realize exact linear inverse filtering, the performance deteriorates remarkably. Experimental results demonstrate that the proposed method has about 20dB higher performance than the conventional one.