title: Integrating the ECG power-line interference removal methods with rule-based system.
abstract: The power-line frequency interference in electrocardiographic signals is eliminated to enhance the signal characteristics for diagnosis. The power-line frequency normally varies +/- 1.5 Hz from its standard value of 50 Hz. In the present work, the performances of the linear FIR filter, Wave digital filter (WDF) and adaptive filter for the power-line frequency variations from 48.5 to 51.5 Hz in steps of 0.5 Hz are studied. The advantage of the LMS adaptive filter in the removal of power-line frequency interference even if the frequency of interference varies by +/- 1.5 Hz from its normal value of 50 Hz over other fixed frequency filters is very well justified. A novel method of integrating rule-based system approach with linear FIR filter and also with Wave digital filter are proposed. The performances of Rule-based FIR filter and Rule-based Wave digital filter are compared with the LMS adaptive filter.
authors.affiliation: College of Engineering, Anna University, Madras, India.
authors.forename: N
authors.initials: N
authors.lastname: Kumaravel
authors.forename: A
authors.initials: A
authors.lastname: Senthil
authors.forename: K S
authors.initials: KS
authors.lastname: Sridhar
authors.forename: N
authors.initials: N
authors.lastname: Nithiyanandam
mesh_terms: D000465:Algorithms; D004562:Electrocardiography / Q000379:methods* / Q000706:statistics & numerical data; D005069:Evaluation Studies as Topic; D006801:Humans; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation