The Paper researches the real-time algorithm of digital filter inthe automatic analysis system for the signal of ECG( Electrocardio-gram), and proposes a reformed complex median filter which takesonly50 microseconds to filter one real-time sample.

• 本文研究心电信号自动分析系统中的实时数字滤波算法,提出了一种改进型的复合中值滤波器,它完成一个样本的实时滤波只需要50微秒的时间。