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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">sibsutis</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник СибГУТИ</journal-title><trans-title-group xml:lang="en"><trans-title>The Herald of the Siberian State University of Telecommunications and Information Science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6920</issn><publisher><publisher-name>СибГУТИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55648/1998-6920-2021-15-3-77-91</article-id><article-id custom-type="elpub" pub-id-type="custom">sibsutis-63</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Адаптация фильтра нелокального усреднения для усиления звуков тонов сердца на фонокардиограммах плода и человека</article-title><trans-title-group xml:lang="en"><trans-title>Non-local averaging filter adaptation for heart sounds amplification on fetus and humans’ phonocardiograms</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костелей</surname><given-names>Я. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosteley</surname><given-names>Y. V.</given-names></name></name-alternatives><email xlink:type="simple">kosteleyyv@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жданов</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhdanov</surname><given-names>D. S.</given-names></name></name-alternatives><email xlink:type="simple">d_s_zhdanov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боровской</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Borovskoy</surname><given-names>I. G.</given-names></name></name-alternatives><email xlink:type="simple">igor.g.borovskoi@tusur.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>ООО «Диагностика +»;  Томский государственный университет систем управления и радиоэлектроники</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>ООО «Диагностика +»; Томский государственный университет систем управления и радиоэлектроники</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-3"><institution>Томский государственный университет систем управления и радиоэлектроники</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>09</month><year>2021</year></pub-date><volume>0</volume><issue>3</issue><fpage>77</fpage><lpage>91</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Костелей Я.В., Жданов Д.С., Боровской И.Г., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Костелей Я.В., Жданов Д.С., Боровской И.Г.</copyright-holder><copyright-holder xml:lang="en">Kosteley Y.V., Zhdanov D.S., Borovskoy I.G.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestnik.sibsutis.ru/jour/article/view/63">https://vestnik.sibsutis.ru/jour/article/view/63</self-uri><abstract><p>Представлено конструирование и обоснование работы фильтра pNLF, основанного на модификации фильтра нелокального усреднения, для решения задачи усиления звуков тонов сердца на фонокардиограммах плода и человека для последующей сегментации тонов и вычисления частоты сердечных сокращений, актуальных для фетального мониторинга. Приведены особенности подбора параметров фильтра и перспективы его оптимизации для конкретных задач. Предоставлены данные и результаты оценки фильтрации методом pNLF на фонокардиограммах плода и взрослого человека, зарегистрированных с использованием разных акустических датчиков.</p></abstract><trans-abstract xml:lang="en"><p>The design and substantiation of the pNLF filter based on a non-local averaging filter modification is presented. The filter is used for solving the problem of heart sounds amplification on fetal and human phonocardiograms for further tone segmentation and heart rate calculation relevant for fetal monitoring. The parameters for choosing the filter and the prospects for its optimization for specific tasks are presented. The data and results of filtration performed by the pNLF on fetus and human phonocardiograms recorded by using different acoustic sensors are provided.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фонокардиограмма</kwd><kwd>нелокальное усреднение</kwd><kwd>сегментация тонов сердца</kwd></kwd-group><kwd-group xml:lang="en"><kwd>phonocardiogram</kwd><kwd>non-local means</kwd><kwd>heart rate segmentation</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">Sbrollini A., Strazza A., Caragiuli M., Mozzoni C., Tomassini S., Agostinelli A., Burattini L. Fetal Phonocardiogram Denoising by Wavelet Transformation: Robustness to Noise II Computing in Cardiology Conference. 2017. V. 44. DOI: 10.22489/cinc.2017.331-075.</mixed-citation><mixed-citation xml:lang="en">Sbrollini A., Strazza A., Caragiuli M., Mozzoni C., Tomassini S., Agostinelli A., Burattini L. 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