Elimination of AC Interference in Electrocardiogram Using HR Notch Filter with Transient Suppression
Journal
IEEE Transactions on Biomedical Engineering
Journal Volume
42
Journal Issue
11
Pages
1128-1132
Date Issued
1995
Author(s)
Tseng, C.-C.
Abstract
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.
Type
journal article