在信号处理中经常要把某些单频(窄带)干扰信号去除，例如求系统采集信号中的把工频信号滤除。实际上有一个很好的方法，便是使用陷波器。-Signal processing often take some single frequency (narrowband) interference signal removal, for example, demand in the system acquisition signal-frequency signal filtering. In fact, a good method is to use a notch filter.