【摘要】 针对多通道声回波对消中自适应算法难以找到真实解的问题,通过非线性变换预处理的方法来构造相关矩阵的满秩估计数据阵,从而对利用正则方程求解滤波器系数的直接求解(DS)法进行了深入的探索.在相同的实验条件下比较了DS法与RLS和NLMS算法的性能,实验结果表明,DS法具有更快的收敛速度,能够得到更精确的解.更多还原

【Abstract】 As for multichannel acoustic echo cancellation,it is too difficult to find a real solution with adaptive algorithms.In this paper,we exploit the pre-processing of nonlinear transformation to construct a full-rank estimate data matrix of correlation matrix.The method of direct-solution(DS) that gets the solution to the filter coefficients with the normal equation has been explored thoroughly.The performances of DS、RLS and NLMS have been compared in the same experimental conditions.DS has a faster convergence speed and can find a more accurate solution.更多还原