中文说明：
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。
English Description：
This paper describes the basic principle of adaptive noise cancellation (ANC) technology. Based on the principle of adaptive filter, an adaptive noise canceller is designed. On the basis of the research on the relevant theory of adaptive filter, the LMS adaptive filtering algorithm, which is the core of adaptive noise canceller, is mainly studied. In the Simulink of MATLAB, the model of adaptive noise canceller is established and simulated by setting different parameters. The results show that the system can effectively recover the original signal from the noise. Finally, the performance of the system is analyzed, and the requirements of selecting the reference signal in the practical application of the adaptive noise cancellation system are given.