IIR带阻网络滤波器，通过Matlab生成，可用于10-20Khz带阻网络滤波-IIR band-stop filter network, generated by Matlab, can be used for 10-20Khz band-stop filter network

利用matlab提供的firhalfban函数设计阶数为16、通阻带容限为0.0001的半带滤波器。仿真测试滤波前后的信号时域图，回执滤波器的频率响应特性图-Provided firhalfban function using matlab design order of 16, through the 0.0001 stopband wool half-band filter. Simulation test filtered time domain signal before and aft