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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Human Physiology</journal-id><journal-title-group><journal-title xml:lang="en">Human Physiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Физиология человека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0131-1646</issn><issn publication-format="electronic">3034-6150</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">684027</article-id><article-id pub-id-type="doi">10.31857/S0131164625030081</article-id><article-id pub-id-type="edn">TQHLRE</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Band-pass spectral-temporal parameters of forced expiratory noises in bronchial obstruction. relation with whistling sounds</article-title><trans-title-group xml:lang="ru"><trans-title>Полосовые спектрально-временные параметры шумов форсированного выдоха при бронхиальной обструкции. Связь со свистящими звуками</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pochekutova</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Почекутова</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Acoustic Tomography</p></bio><email>i-poch@poi.dvo.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Safronova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Сафронова</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Acoustic Tomography</p></bio><email>i-poch@poi.dvo.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Il’ichev Pacific Oceanological Institute, Far Eastern Branch of RAS</institution></aff><aff><institution xml:lang="ru">ФГБУН Тихоокеанский океанологический институт имени В.И. Ильичева ДВО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-07-04" publication-format="electronic"><day>04</day><month>07</month><year>2025</year></pub-date><volume>51</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>76</fpage><lpage>89</lpage><history><date date-type="received" iso-8601-date="2025-06-12"><day>12</day><month>06</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-06-12"><day>12</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0131-1646/article/view/684027">https://journals.eco-vector.com/0131-1646/article/view/684027</self-uri><abstract xml:lang="en"><p>A comparative study of band-pass spectral-temporal parameters of tracheal noises of forced expiratory (FE) and quantitative assessment of FE wheezes was conducted on an experimental sample including patients with bronchial obstruction (asthma and COPD, n = 36) and healthy asymptomatic individuals with normal lung function (n = 39). Digital processing of tracheal noise signals was performed in MATLAB automatically using a specially developed algorithm. The analyzed acoustic band-pass parameters are temporal and spectral characteristics in several (2 to 6) combined 200-Hz bands, divided into mid- (200–800 Hz) and high-frequency (800–2000 Hz) areas in the range of 200–2000 Hz, as well as their ratios. FE wheezes were recognized by an experienced operator on spectrograms in the SpectraPLUS audio editor. A significant predominance of the values of high-frequency band-pass energy parameters of tracheal noises and the ratio of energies and powers of the high-frequency and mid-frequency ranges was revealed in patients with obstructive pulmonary diseases compared to healthy controls. The number of whistling sounds was greater in patients and moderately correlated with the acoustic parameters. Redistribution of acoustic energy to the high-frequency region is probably associated with the pathophysiological basis of bronchial obstruction – narrowing of the conducting airways and an increase in airflow resistance.</p></abstract><trans-abstract xml:lang="ru"><p>На экспериментальной выборке, включавшей больных с бронхиальной обструкцией (бронхиальная астма и ХОБЛ, <italic>n</italic> = 36) и здоровых бессимптомных лиц с нормальной функцией легких (<italic>n</italic> = 39), проведено сравнительное исследование полосовых спектрально-временных параметров трахеальных шумов форсированного выдоха (ФВ) и количественная оценка свистов ФВ. Цифровая обработка сигналов трахеальных шумов осуществлялась в программе <italic>MATLAB</italic> автоматически с помощью специально разработанного алгоритма. Анализируемые акустические полосовые параметры представляют собой временные и спектральные характеристики, в нескольких (от 2-х до 6) объединенных 200-герцовых полосах, с разделением на средне- (СЧ) (200–800 Гц) и высокочастотные (ВЧ) (800–2000 Гц) области в диапазоне 200–2000 Гц, а также их соотношения. Свисты ФВ распознавались опытным оператором на спектрограммах в аудиоредакторе <italic>SpectraPLUS</italic>. Выявлено существенное преобладание значений высокочастотных полосовых энергетических параметров трахеальных шумов и соотношений энергий и мощностей ВЧ- и СЧ-диапазонов у больных с обструктивными заболеваниями легких в сравнении со здоровым контролем. Количество свистящих звуков было бо́льшим у больных и умеренно коррелировало с акустическими параметрами. Перераспределение акустической энергии в область высоких частот вероятно связано с патофизиологическим базисом бронхиальной обструкции – сужением проводящих дыхательных путей и ростом сопротивления воздушному потоку.</p></trans-abstract><kwd-group xml:lang="en"><kwd>forced expiration</kwd><kwd>tracheal noises</kwd><kwd>relative band-pass spectral-temporal parameters</kwd><kwd>wheezes</kwd><kwd>bronchial obstruction</kwd><kwd>respiratory acoustics</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>форсированный выдох</kwd><kwd>трахеальные шумы</kwd><kwd>относительные полосовые спектрально-временные параметры</kwd><kwd>свисты</kwd><kwd>бронхиальная обструкция</kwd><kwd>респираторная акустика</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>075-03-2024-469</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bousquet J., Khaltaev N. 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