The Statistical Behavior of Phase Error for Deficient-Order Secondary Path Modeling
The Statistical Behavior of Phase Error for Deficient-Order Secondary Path Modeling
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DOI：
10.1109/lsp.2007.914946
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发表时间：
2008-02
影响因子：
3.9
通讯作者：
Ming Wu;X. Qiu;Guoyue Chen
中科院分区：
文献类型：
--
作者：
Ming Wu;X. Qiu;Guoyue Chen
在实现有源噪声控制（ANC）系统时，经常使用滤波x LMS（FXLMS）算法，其中必须对自适应控制滤波器的输出与误差传感器之间的次级路径传递函数进行建模。为了精确地建模次级路径，次级路径估计滤波器应该具有足够的阶数。然而，太大的阶数增加了FXLMS算法的计算负荷。文中分析了二次通道建模滤波器阶数与建模相位误差的关系。
When implementing active noise control (ANC) systems, the filtered-x LMS (FXLMS) algorithm is often used, where the secondary path transfer function between the output of the adaptive control filter and the error sensor has to be modeled. To model the secondary path precisely, the secondary path estimation filter should be of sufficient order. However, too large an order increases the computation load of the FXLMS algorithm. In this letter, the relationship between the modeling phase error and the order of the secondary path modeling filter is analyzed.