Open Access Open Access  Restricted Access Subscription Access
Fragment of pulse-wave signal with characteristic low-frequency distortions

Method of adaptive filtering of pulse-wave low-frequency distortions

Aleksandr Aleksandrovich Fedotov, Sergey Anatolievich Akulov


Different methods of correcting the low-frequency distortions of pulse-wave signal have been considered. A correction method based on forming a reference signal of adaptive filter and using low-frequency filtering of initial biosignal is proposed. The efficiency of different methods of pulse-wave filtering is investigated under the conditions of exposure to interferences of different intensity. It has been found out that the proposed method of filtering low-frequency interferences makes it possible to obtain the lowest distortions in signal processing as compared to the model signals free from manifestation of distorting effects.


pulse-wave; drift of isoline; filtering error; adaptive filtering

Full Text:



ALLEN, JOHN. Photoplethysmography and its application in clinical physiological measurement. Physiol. Meas., 2007, v.28, n.3, p.R1, DOI:

FEDOTOV, A.A.; AKULOV, S.A. Measuring Transducers of Biomedical Signals in Clinical Monitoring Systems. Moscow: Radio i Svyaz’, 2013 [in Russian].

WANG, K.Q.; XU, L.S.; WANG, L.; LI, Z.G.; LI, Y.Z. Pulse baseline wander removal using wavelet approximation. Proc. of IEEE Conf. on Computers in Cardiology, 21–24 Sept. 2003. IEEE, 2003, v.30, p.605-608, DOI:

RANGAYYAN, RANGARAJ M. Biomedical Signal Analysis: A Case-Study Approach. Wiley-IEEE Press, 2002, ISBN: 978-0-471-20811-2.

KALAKUTSKY, L.I.; FEDOTOV, A.A. Diagnostics of endothelial dysfunction by the method of contour analysis of pulse wave. Izv. SFedU. Engineering Sciences, 2009, n.9, p.93-98,

CHEN, X.; MUKKAMALA, R. Selective quantification of the cardiac sympathetic and parasympathetic nervous systems by multisignal analysis of cardiorespiratory variability. Am. J. Physiol. Heart Circ. Physiol., 2008, v.294, n.1, p.362-371, PMID: 17993596.

FEDOTOV, A.A. Amplitude-time method for detecting characteristic pulse-wave points. Biomedical Eng., 2013, v.46, n.6, p.241-245, DOI:

© Radioelectronics and Communications Systems, 2004–2020
When you copy an active link to the material is required
ISSN 1934-8061 (Online), ISSN 0735-2727 (Print)
tel./fax +38044 204-82-31, 204-90-41