Pei S C, Tseng C C
Department of Electrical Engineering, National Taiwan University, Taipei, Republic of China.
IEEE Trans Biomed Eng. 1995 Nov;42(11):1128-32. doi: 10.1109/10.469385.
In this paper, a technique for suppressing the transient states of IIR notch filter is investigated. This technique uses the vector projection to find better initial values for notch filters. When a notch or comb filter is used to eliminate power line (AC) interference in the recording of electrocardiograms (ECG), the performance of the notch filter with transient suppression is better than that of the conventional notch filter with arbitrary initial condition. The improvements with this technique are at the cost of additional computation load at the beginning of filtering.
本文研究了一种抑制IIR陷波滤波器瞬态状态的技术。该技术使用向量投影为陷波滤波器寻找更好的初始值。当使用陷波或梳状滤波器来消除心电图（ECG）记录中的电力线（交流）干扰时，具有瞬态抑制功能的陷波滤波器的性能优于具有任意初始条件的传统陷波滤波器。该技术的改进是以滤波开始时额外的计算负载为代价的。
