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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2021-12-62-67</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2024</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕДИЦИНСКИЕ И БИОЛОГИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEDICAL AND BIOLOGICAL MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Комплексная методика вейвлет-фильтрации сигнала пульсовой волны</article-title><trans-title-group xml:lang="en"><trans-title>Complex technique for wavelet filtering of pulse wave signal</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6022-6314</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Александрович Федотов </p><p>Самара</p></bio><bio xml:lang="en"><p>Aleksandr A. Fedotov</p><p>Samara</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский национальный исследовательский университет имени академика С. П. Королева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara National Research University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2023</year></pub-date><volume>0</volume><issue>12</issue><fpage>62</fpage><lpage>67</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/2024">https://www.izmt.ru/jour/article/view/2024</self-uri><abstract><p>Рассмотрена актуальная в кардиологической диагностике проблема цифровой фильтрации сигнала пульсовой волны, на которую воздействуют различные физиологические помехи, такие как дрейф изолинии и артефакты движения. Разработана комплексная методика вейвлет-фильтрации сигнала пульсовой волны, позволяющая устранить дрейф изолинии и артефакты движения, искажающие форму биосигнала. Предложенная методика основана на кратномасштабном вейвлет-разложении биосигнала по ортогональным вейвлетам Добеши. В методику включены последовательные процедуры цифровой обработки сигнала пульсовой волны: кратномасштабное вейвлет-преобразование; модификация детализирующих коэффициентов вейвлет-разложения на основе пороговой обработки; восстановление сигнала пульсовой волны на основе исходных коэффициентов аппроксимации и модифицированных детализирующих коэффициентов с помощью обратного вейвлет-преобразования. Проведён сравнительный анализ предложенной методики и существующих подходов к фильтрации пульсовых волн – фильтрация скользящего среднего, медианная и полосовая частотная фильтрации. Для получения количественных характеристик оценки эффективности фильтрации использовано имитационное моделирование пульсовой волны с помехами различных интенсивности и природы. Высокое качество фильтрации сигнала пульсовой волны с применением разработанной методики на основе кратномасштабных вейвлет-преобразований может служить надёжной основой для разработки высокоэффективных алгоритмов и аппаратно-программных комплексов кардиологической диагностики.</p></abstract><trans-abstract xml:lang="en"><p>The article is devoted to the research of a comprehensive technique for digital filtering of the pulse wave signal in the presence of various physiological artifacts, such as baseline wander and motion artifacts. The proposed method of wavelet filtering of a pulse wave signal from physiological artifacts based on discrete decomposition into orthogonal wavelets includes sequential procedures for digital processing: multiscale wavelet transform; modification of detail coefficients of wavelet decomposition based on thresholding; reconstruction of the pulse wave signal based on the original approximation coefficients and modified detail coeffi cients using the inverse wavelet transform. A comparative analysis of the proposed methodology with existing approaches to filtering pulse waves, such as moving average filtering, median filtering, bandpass frequency filtering, was carried out. To obtain quantitative characteristics for evaluating the filtering efficiency, we used simulation of a pulse wave with the presence of interference and noise of various intensity and nature of occurrence. The studies carried out in this work have shown that multiscale wavelet transformations of the pulse wave signal provide the least distortions when filtering motion artifacts in comparison with classical approaches based on temporal or spectral transformations, while the advantages of multiscale wavelet analysis are most noticeable in conditions of increased noise.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пульсовая волна</kwd><kwd>вейвлет-преобразование</kwd><kwd>кратномасштабный вейвлет-анализ</kwd><kwd>артефакт движения</kwd><kwd>дрейф изолинии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pulse wave</kwd><kwd>wavelet transform</kwd><kwd>multiscale wavelet analysis</kwd><kwd>motion artifact</kwd><kwd>baseline wander</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Allen J., Physiological Measurement, 2007, vol. 28, pp. 1–39. https://doi.org/10.1088/0967-3334/28/3/R01</mixed-citation><mixed-citation xml:lang="en">Allen J., Physiological Measurement, 2007, vol. 28, pp. 1–39. https://doi.org/10.1088/0967-3334/28/3/R01</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Федотов А. 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