Notchfilter

代码说明：

  全相位陷波器是全相位数字信号处理体系中一个很有特色的技术，在通信、军事等抗强干扰场合中应用及其广泛，因而研究全相位陷波器并仿真建模实现其滤波功能，具有很高的意义。(All-phase notch filter is a very distinctive technique in the all-phase of digital signal processing system. In communications，military and such resistance interference are widely used. Therefore, it is of high significance to the study of All-phase notch filter and simulate the modeling to realize the filter function)