Title: Modified wavelet-based technique for baseline drift removal and diagnostic scope of spectral energy of radial pulse signal

Authors: Ganesh Nawsupe, Rajani R. Joshi

Addresses: School of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Powai 400076, Mumbai, India. ' Department of Mathematics, Indian Institute of Technology Bombay, Powai 400076, Mumbai, India

Abstract: We present a modification to the wavelet-based cascaded adaptive method of Xu et al. (2007) for removal of baseline wandering in pulse signals. We have applied it on IPG-recorded radial arterial pulse signals, using an extension of Pan–Tompkins| algorithm (1985) for automatic detection of onset points and peaks of successive periods. The results show better performance of our method on a large sample of radial arterial pulse waveforms of adult Indians. Spectral analysis of this data shows significant scope of a power energy ratio in early diagnosis of some cardiac problems.

Keywords: arterial pulse signals; baseline drift; wavelet filters; harmonic analysis; India; heart rate; cardiac functions; early diagnosis.

DOI: 10.1504/IJBET.2011.040450

International Journal of Biomedical Engineering and Technology, 2011 Vol.6 No.1, pp.1 - 13

Published online: 21 Jan 2015 *

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