Frequency bandwidth limitations in the signal-averaged ECG by the maximum coherence matching technique

OJ Escalona, RH Mitchell

Research output: Contribution to journalArticle

Abstract

Signal averaging of the ECG is a non-invasive technique that can disclose information about the pathological state of the heart. However, the averaging process can impose serious limitations on the spectral range of the signal output. In particular, the averaging process that achieves beat alignment by means of maximum coherence matching with a template beat has a frequency response that is susceptible to different factors, such as the noise level in the recorded ECG and the configuration of the template beat. An assessment of the extent that these factors affect the bandwidth of the averaging process was carried out by means of computer simulation methods. The results show that 50 Hz noise has a dominant effect over EMG noise, and they suggest that this technique of beat alignment may perform irregularly when analysing high-frequency ECG signals above 500 Hz.
LanguageEnglish
Pages177-186
JournalAutomedica
Volume13
Issue number2 and
Publication statusPublished - 15 Mar 1991

Fingerprint

Electrocardiography
Noise
Bandwidth
Computer Simulation
Frequency response
Computer simulation

Keywords

  • Signal-averaged ECG
  • SAECG
  • late potential
  • maximum coherence matching
  • computer simulation
  • correlation coefficient
  • matched filter
  • low-pass filter effects.

Cite this

@article{17d9c71d6e4a4acd99ea311726834217,
title = "Frequency bandwidth limitations in the signal-averaged ECG by the maximum coherence matching technique",
abstract = "Signal averaging of the ECG is a non-invasive technique that can disclose information about the pathological state of the heart. However, the averaging process can impose serious limitations on the spectral range of the signal output. In particular, the averaging process that achieves beat alignment by means of maximum coherence matching with a template beat has a frequency response that is susceptible to different factors, such as the noise level in the recorded ECG and the configuration of the template beat. An assessment of the extent that these factors affect the bandwidth of the averaging process was carried out by means of computer simulation methods. The results show that 50 Hz noise has a dominant effect over EMG noise, and they suggest that this technique of beat alignment may perform irregularly when analysing high-frequency ECG signals above 500 Hz.",
keywords = "Signal-averaged ECG, SAECG, late potential, maximum coherence matching, computer simulation, correlation coefficient, matched filter, low-pass filter effects.",
author = "OJ Escalona and RH Mitchell",
year = "1991",
month = "3",
day = "15",
language = "English",
volume = "13",
pages = "177--186",
number = "2 and",

}

Frequency bandwidth limitations in the signal-averaged ECG by the maximum coherence matching technique. / Escalona, OJ; Mitchell, RH.

Vol. 13, No. 2 and, 15.03.1991, p. 177-186.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Frequency bandwidth limitations in the signal-averaged ECG by the maximum coherence matching technique

AU - Escalona, OJ

AU - Mitchell, RH

PY - 1991/3/15

Y1 - 1991/3/15

N2 - Signal averaging of the ECG is a non-invasive technique that can disclose information about the pathological state of the heart. However, the averaging process can impose serious limitations on the spectral range of the signal output. In particular, the averaging process that achieves beat alignment by means of maximum coherence matching with a template beat has a frequency response that is susceptible to different factors, such as the noise level in the recorded ECG and the configuration of the template beat. An assessment of the extent that these factors affect the bandwidth of the averaging process was carried out by means of computer simulation methods. The results show that 50 Hz noise has a dominant effect over EMG noise, and they suggest that this technique of beat alignment may perform irregularly when analysing high-frequency ECG signals above 500 Hz.

AB - Signal averaging of the ECG is a non-invasive technique that can disclose information about the pathological state of the heart. However, the averaging process can impose serious limitations on the spectral range of the signal output. In particular, the averaging process that achieves beat alignment by means of maximum coherence matching with a template beat has a frequency response that is susceptible to different factors, such as the noise level in the recorded ECG and the configuration of the template beat. An assessment of the extent that these factors affect the bandwidth of the averaging process was carried out by means of computer simulation methods. The results show that 50 Hz noise has a dominant effect over EMG noise, and they suggest that this technique of beat alignment may perform irregularly when analysing high-frequency ECG signals above 500 Hz.

KW - Signal-averaged ECG

KW - SAECG

KW - late potential

KW - maximum coherence matching

KW - computer simulation

KW - correlation coefficient

KW - matched filter

KW - low-pass filter effects.

UR - https://www.scopus.com/source/sourceInfo.url?sourceId=34541&origin=resultslist

M3 - Article

VL - 13

SP - 177

EP - 186

IS - 2 and

ER -