Removal of power-line interference from the ECG: a review of the subtraction procedure |
| |
Authors: | Chavdar?Levkov Georgy?Mihov Ratcho?Ivanov Ivan?Daskalov Ivaylo?Christov Email author" target="_blank">Ivan?DotsinskyEmail author |
| |
Institution: | (1) Signa Cor laboratory, Lubliana str 46, 1618 Sofia, Bulgaria;(2) Faculty of Electronic Engineering and Technologies (FETT), Technical University of Sofia, Kliment Ohridski str. 8, 1000 Sofia, Bulgaria;(3) Centre of Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev str., blok 105, 1113 Sofia, Bulgaria |
| |
Abstract: | Background Modern biomedical amplifiers have a very high common mode rejection ratio. Nevertheless, recordings are often contaminated
by residual power-line interference. Traditional analogue and digital filters are known to suppress ECG components near to
the power-line frequency. Different types of digital notch filters are widely used despite their inherent contradiction: tolerable
signal distortion needs a narrow frequency band, which leads to ineffective filtering in cases of larger frequency deviation
of the interference. Adaptive filtering introduces unacceptable transient response time, especially after steep and large
QRS complexes. Other available techniques such as Fourier transform do not work in real time. The subtraction procedure is
found to cope better with this problem. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|