中文说明：心电信号的预处理滤波器的设计（包括数据文件和程序） 包括了FIR滤波器（布莱克曼窗）和IIR滤波器（巴特沃思，切比雪夫I，II型，椭圆滤波器）以及整系数滤波器还有基于Z平面的简单极点法滤波，可以有效滤除基线漂移与工频干扰
English Description：
The design of ECG preprocessing filter (including data files and programs) includes FIR filter (Blackman window), IIR filter (Butterworth, Chebyshev I, II, elliptic filter), integer coefficient filter and simple pole method filter based on z plane, which can effectively filter baseline drift and power frequency interference