Removal of Base-Line Wander and Power-Line Interference from the ECG by an Efficient FIR Filter with a Reduced Number of Taps
- 1 December 1985
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. BME-32 (12) , 1052-1060
- https://doi.org/10.1109/tbme.1985.325514
Abstract
Linear phase filtering is proposed for the removal of baseline wander and power-line frequency components in electrocardiograms. In order to reduce the large number of computations involved in the digital filtering that are necessary, the desired filter spectrum was defined periodically. Making use of the property that the spectrum period is 50 Hz, the spectrum can be realized with a considerably reduced number of impulse response coefficients. This, in combination with the necessary impulse response symmetry, leads to a reduction in the number of multiplications per output sample by a factor of 10. A suitable impulse response is designed with a pass-band ripple of less than 0.5 dB and a high stop-band attenuation. The applicability is demonstrated by applying the filtering to exercise electrocardiograms.Keywords
This publication has 2 references indexed in Scilit:
- Digital FIR Filtering For Removal of ECG Baseline WanderJournal of Clinical Engineering, 1982
- Electrocardiogram baseline noise estimation and removal using cubic splines and state-space computation techniquesComputers and Biomedical Research, 1977