采用两类滤波器的有源噪声控制算法

An Active Noise Control Algorithm Based on the Two Types of Filter

将格型结构滤波器与IIR滤波器级联来实现一种有源噪声控制 (ANC)算法。这种算法在格型结构部分采用梯度自适应格型 (GAL)算法 ,在IIR滤波器部分采用Filtered U算法 ,该算法具有收敛速度快、计算量较小的特点。仿真结果证明算法是有效的。

In this paper, an active noise control algorithm is implemented by cascading lattice filter and transversal filter. In the lattice section, gradient adaptive lattice algorithm is taken, and filtered U algorithm is adapted in the IIR part. The algorithm maintains fast convergence of lattice structure and it less requires computational complexity. Computer simulation illustrates the validity of the algorithm.