Contrast the ECG spectrum before and after filter and test triangle signal with simulative baseline wander, the Zero-phase Digital Filter designed in paper can effectively filter interference of low frequency and rippingly keep the shape of ST segment.
通过对滤波前后信号的频谱分析,和三角波叠加模拟基线漂移实验验证,本文中设计的零相位滤波器在有效滤除低频干扰的同时,能够极好的保持ST段原有的形态而不受影响。
参考来源 - 心电信号ST段分析研究·2,447,543篇论文数据，部分数据来源于NoteExpress
零相位有限脉冲响应滤波器：是耶，非耶?。
本文还讨论了零相位互补扇形滤波器的设计。
针对通常情况下滤波器引起的相移问题 ，概述零相位滤波的重要意义。
Aiming at the problem of phase error caused by normal filters in signal processing , summarizes the important meaning of digital filtering with zero phase error.
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