A new structure for sound reproduction system

A novel structure with direct inversion of a multiple- input multiple-output (MIMO) system is proposed in this paper. Based on this structure, 2 adaptive algorithms, LMS-like and Affine Projection Algorithm (APA), are proposed to directly obtain an accurate estimate of the inverse of the plant system. The proposed algorithms have faster convergence speed than the FxLMS algorithm. Furthermore, this structure does not necessitate any a prior information of plant system and it can trace the fluctuation of the plant. It is shown through simulations that the proposed method over performs the FxLMS algorithm in convergence speed so it is much applicable to real world environments than the FxLMS algorithm.