DOI: https://doi.org/10.3103/S0735272715010069
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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

Abstract


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.


Keywords


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

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References


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