契比雪夫数字滤波器对心电信号进行数字滤波，采用零相位数字滤波，比较好的去处了基线漂移，比较适合于ST段的检测-the source program is about digital filter of Ecg signal ，we design a Chebyshev digital filter，we are satisfied about the results， succeeding in removing the baseline driftso be glad to share wit