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本文根据心电实时监护的要求,应用整系数线性相位数字滤波器对心电信号作预处理,包括50Hz 工频干扰的陷波(带阻滤波)及高频噪声抑制(低通滤波)。文章叙述了整系数数字滤波器的设计过程,在实际滤波效果与计算量的减省方面均取得了较好的效果。
According to the requirements of ECG real-time monitoring, the whole coefficient linear phase digital filter is used to preprocess ECG signals, including 50Hz frequency interference notch (band-stop filter) and high-frequency noise suppression (low-pass filter). The article describes the whole digital filter design process, in the actual filter effect and reduce the amount of calculations have achieved good results.