传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此我们需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。

-Wideband signals in the traditional sinusoidal interference suppression method is to use a notch filter (notch filter), that we need to know precisely the frequency of sinusoidal interference. However, when the disturbance frequency is slow sinusoidal changes, and the frequency characteristics of the election request is very acute, is the best use of adaptive noise cancellation method. with a second-order FIR of the LMS adaptive filter to eliminate sinusoidal interference in a program.