A real-time simulated QRS detection system constructed using wavelet filtering technique


KÖKTÜRK G. G.

IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis, Pennsylvania, United States Of America, 6 - 09 October 1998, pp.281-284 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/tfsa.1998.721416
  • City: Pennsylvania
  • Country: United States Of America
  • Page Numbers: pp.281-284
  • Dokuz Eylül University Affiliated: Yes

Abstract

Electrocardiography (ECG) signals analysis is a very important step in the detection of some of the electrophsiological abnormalities that distinguish patients with and without sustained late potential problems. Unfortunately, approaches developed so far, both in time and frequency domain of the QRS complex suffers from a relatively low positive-predictive accuracy. Therefore, in this underscores it is required to improve methods. In this study, we investigated the applications of wavelet filter banks. To this effect it is then applied to the problem of distinguishing patients with and without late potential. In the course of the work, we studied the various accuracy scenarious using basic filtering and wavelet filtering techniques. We developed a new approach called subframe approximation and then we applied this approach to the wavelet filters. The real improvement is achieved in wavelet filtering method and discrete wavelet analysis that can be used in practice.