摘要
阐述了自适应噪声抵消(ANC)技术的基本原理,基于自适应滤波器的原理,设计了自适应噪声抵消器;在对自适应滤波器相关理论研究的基础上,重点研究了自适应噪声抵消器的核心——LMS自适应滤波算法。在MATLAB中的Simulink下,建立了自适应噪声抵消器的模型,并通过设置不同的参数进行仿真,结果表明系统能够有效地从噪声中恢复出原始信号。最后对系统进行了性能分析,给出了自适应噪声抵消系统在实际应用中选取参考信号的要求。
This paper elaborated the basic theory of Adaptive noise cancellation technology （ANC）,designed Adaptive noise canceller based on adaptive filter; After studying the related theory of adaptive filter,the core of adaptive noise canceller-LMS adaptive filtering algorithm is researched emphatically. Under the Simulink of MATLAB, built the model of adaptive noise canceller and simulated through installing different parameters. The results declared the system can recover original signal from noise effectively. Finally, analyzed the function of system, and given the system requirements of selected reference signals in the practical application.
出处
《电子测试》
2009年第11期43-46,共4页
Electronic Test
