A general solution for the time delay introduced by a low-pass Butterworth digital filter: An application to musculoskeletal modeling
A general solution for the time delay introduced by a low-pass Butterworth digital filter: An application to musculoskeletal modeling
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DOI：
10.1016/j.jbiomech.2006.02.001
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发表时间：
2007-01-01
影响因子：
2.4
通讯作者：
Rose, William
中科院分区：
文献类型：
--
作者：
Manal, Kurt;Rose, William
低通巴特沃斯数字滤波器通常用于生物力学相关的研究。一般来说，输入信号在正向和反向方向上进行滤波，这样输出信号中的时间移位就不会发生。然而，在建模生理事件时，有时引入特定的时间延迟是一个重要的考虑因素。仅对正向数据进行过滤可以作为一种有效的方法来解释特定的时间延迟。通过仔细选择滤波器阶数和截止频率，可以实现特定的延迟。本文的目的是给出由低通巴特沃斯数字滤波器引入的时间延迟的一般解的解析公式。(c) 2006 Elsevier Ltd.版权所有。
Low-pass Butterworth digital filters are commonly used in biomechanics-related research. In general, the input signal is filtered in the forward and reverse directions so that a temporal shift in the output signal does not occur. There are times, however, when introducing a specific time delay is an important consideration when modeling a physiological event. Filtering the data in the forward direction only can be used as an efficient method to account for a specific time delay. Specific delays are possible by carefully selecting the filter order and cut-off frequency. The purpose of this paper is to present the analytical formulation of a general solution for the time delay introduced by a low-pass Butterworth digital filter. (c) 2006 Elsevier Ltd. All rights reserved.