数字滤波器在增强胎儿心电图方面的应用。

The use of digital filters in enhancing the fetal electrocardiogram.

作者信息

Sheild J E, Kirk D L

出版信息

J Biomed Eng. 1981 Jan;3(1):44-8. doi: 10.1016/0141-5425(81)90104-7.

Abstract

The use of a low pass digital filter (implemented as a software routine upon a minicomputer) to enhance repetitive biological signals immersed in low frequency noise is described. The method by which a digital filter can emulate a hardware moving window averaging process is outlined. The results of applying such a filter to the enhancement of the fetal electrocardiogram are presented. The criteria used in setting up the filter are also discussed.

摘要

本文描述了使用低通数字滤波器（在小型计算机上作为软件程序实现）来增强淹没在低频噪声中的重复性生物信号。概述了数字滤波器模拟硬件移动窗口平均过程的方法。给出了将这种滤波器应用于增强胎儿心电图的结果。还讨论了设置滤波器所使用的标准。