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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.2023-3-61-66</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1522</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>АКУСТИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ACOUSTIC MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Гибридный метод спектрального анализа речевых сигналов на основе авторегрессионной модели и периодограммы Шустера</article-title><trans-title-group xml:lang="en"><trans-title>Hybrid method of speech signals spectral analysis based on the autoregressive model and Schuster periodogram</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3045-3337</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савченко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Savchenko</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Васильевич Савченко</p><p>Нижний Новгород</p></bio><bio xml:lang="en"><p>Vladimir V. Savchenko</p><p>Nizhniy Novgorod</p></bio><email xlink:type="simple">vvsavchenko@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский университет «Высшая школа экономики»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University Higher School of Economics</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>14</day><month>04</month><year>2023</year></pub-date><volume>0</volume><issue>3</issue><fpage>61</fpage><lpage>66</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/1522">https://www.izmt.ru/jour/article/view/1522</self-uri><abstract><p>Рассмотрена задача измерения спектральной плотности мощности речевого сигнала в режиме скользящего окна наблюдений. Исследован параметрический подход к решению этой задачи с использованием авторегрессионной модели данных. Исследована проблема оптимизации порядка авторегрессионной модели в условиях малых выборок. Проблему предложено решать с применением гибридного метода спектрального анализа на основе последовательного перебора конечного числа альтернатив. Критерий оптимизации сформулирован в терминах обратной задачи: от речевого сигнала к голосовому источнику. В роли целевой функции использована масштабно-инвариантная мера спектрального расстояния, а в качестве опорного образца – периодограмма Шустера. Эффективность гибридного метода экспериментально оценена на базе авторского программного обеспечения. Показано, что при длительности окна наблюдений не более 10 мс применение гибридного метода более чем на 30 % повышает точность спектрального анализа по сравнению с общеизвестным методом Берга, порядок которого установлен согласно информационному критерию Акаике.</p></abstract><trans-abstract xml:lang="en"><p>The task of measuring the power spectral density of a speech signal in the regime of a sliding observation window is considered. A parametric approach to solving this task using an autoregressive data model is studied. The problem of optimizing the order of an autoregressive model under conditions of small samples is studied. The problem is proposed to be solved using a hybrid method of spectral analysis based on sequential enumeration of a fi nite number of alternatives. The optimization criterion is formulated in terms of the inverse problem: from a speech signal to a voice source. It uses the scaleinvariant measure of the spectral distance as the objective function, and the Schuster periodogram as the reference sample. The effectiveness of the hybrid method has been experimentally evaluated on the basis of author's software. It is shown that with the duration of the observation window of no more than 10 ms, the use of the hybrid method increases the accuracy of spectral analysis by more than 30 % compared to the well-known Berg method, the order of which is established according to the Akaike information criterion.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>акустические измерения</kwd><kwd>акустика речи</kwd><kwd>речевой сигнал</kwd><kwd>авторегрессионная модель</kwd><kwd>проблема малых выборок</kwd><kwd>априорная неопределённость</kwd><kwd>адаптивный подход</kwd></kwd-group><kwd-group xml:lang="en"><kwd>acoustic measurements</kwd><kwd>speech acoustics</kwd><kwd>speech signal</kwd><kwd>autoregressive model</kwd><kwd>small samples</kwd><kwd>a priori uncertainty</kwd><kwd>adaptive approach</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">Marple S. L. 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