zero phase digital filter 零相位数字滤波器
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
A repetitive controller can be obtained by designing a zero phase shift low pass filter. With the help of digital signal processing and software tools, it is easy to design a satisfactory controller.
该方法将控制器的设计转化为零相移低通数字滤波器的设计问题，借助于数字信号处理的理论和工具直接得到所需的控制器参数。
This paper discusses an all digital phase-locked loop with a zero-crossing detector and a loop filter.
本文讨论的全数字锁相环包括过零检测器和环路滤波器。
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