自适应抗噪声送话器算法  

Research on the algorithms of adaptive anti-noise speakers

作　　者：杨汇军[1] 李丽萍[2] 常革新[3] 

机构地区：[1]辽宁工学院信息学院,辽宁锦州121001 [2]辽宁工学院计算机学院,辽宁锦州121001 [3]渤海大学,辽宁锦州121001

出　　处：《辽宁工程技术大学学报（自然科学版）》2004年第3期384-385,共2页Journal of Liaoning Technical University (Natural Science)

摘　　要：DSP芯片结合复杂的数字信号处理算法可构成高性能的自适应抗噪声送话器,自适应信号处理算法对送话器的通信质量是至关重要的。主要研究了几种常见的自适应噪声抵消算法,并通过理论分析,提出了变步长的并行LMS算法作为抗噪声送话器的自适应滤波算法。给出了该算法的实现步骤,同时通过变换算法的特性参数进行MATLAB仿真研究,证明了该算法的先进性。The high performance adaptive anti-noise speaker is made up of DSP chips combined complicated digital signal process algorithms, the adaptive signal process algorithms is very important to communication quality of speaker .Some algorithms of adaptive noise cancellation are discussed. As adaptive filter algorithms of anti-noise speaker, the variable step size parallel LMS algorithms is put forward by theory analyse. The realization step of this algorithms is given. At the same time the advantages of the algorithms is proved by the MATLAB simulation study and changing characteristic parameter.

关 键 词：变步长并行LMS算法 自适应 噪声抵消 

分 类 号：TP914[自动化与计算机技术]