自适应抗噪声送话器算法

Research on the algorithms of adaptive anti-noise speakers

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.