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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.2022-10-58-63</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1658</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>Совершенствование методики измерения показателя точности авторегрессионной модели речевого сигнала</article-title><trans-title-group xml:lang="en"><trans-title>Improving the method for measuring the accuracy indicator of the speech signal autoregressive model</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>Н. Новгород</p></bio><bio xml:lang="en"><p>Vladimir V. Savchenko</p><p>N. 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>2022</year></pub-date><pub-date pub-type="epub"><day>25</day><month>05</month><year>2023</year></pub-date><volume>0</volume><issue>10</issue><fpage>58</fpage><lpage>63</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/1658">https://www.izmt.ru/jour/article/view/1658</self-uri><abstract><p>Рассмотрена задача определения точности авторегрессионной модели речевого сигнала и предложен метод измерений показателя точности в режиме скользящего окна наблюдений. В качестве показателя точности использовано модифицированное значение COSH-расстояния (hyperbolic cosine – функции гиперболического косинуса) авторегрессионной модели относительно одноимённой (однофонемной) периодограммы Шустера в роли опорного спектрального образца. Для изучения возможностей предложенного метода поставлен и проведён натурный эксперимент, в котором объектом исследования служил набор авторегрессионных моделей разных порядков. Указанные модели получены методом Берга для гласных звуков речи контрольного диктора. По результатам выполненных измерений для каждого гласного звука найдены оптимальные значения порядка авторегрессии и соответствующая ему оптимальная авторегрессионная модель. Показано, что данная оптимизация позволила повысить точность авторегрессионной модели речевого сигнала более чем на 60 % в зависимости от звука речи контрольного диктора и особенностей его голосового тракта. Полученные результаты предназначены для использования в системах автоматической обработки и цифровой передачи речи с радикальным сжатием данных на основе коэффициентов линейного предсказания</p></abstract><trans-abstract xml:lang="en"><p>The problem of determining the accuracy of an autoregressive model of a speech signal is considered, and a method for measuring the accuracy index in the sliding observation window mode is proposed. As an indicator of the accuracy of the autoregressive model, a modified value of the COSH-distance (functions of the hyperbolic cosine) relative to the eponymous (one-phoneme) Schuster periodogram was used as a reference spectral sample. To study the possibilities of the proposed method, a full-scale experiment was set up and carried out, in which the object of study was a set of autoregressive models of different orders. These models were obtained by Berg's method for the vowel sounds of the controlled speaker's speech. According to the results of the measurements for each vowel, the optimal values of the autoregressive order and the corresponding optimal autoregressive model were found. It is shown that this optimization made it possible to increase the accuracy of the autoregressive model of the speech signal by more than 60 %, depending on the sound of the controlled speaker's speech and the characteristics of his vocal tract. The results obtained are intended for use in automatic processing and digital speech transmission systems with radical data compression based on linear prediction coefficients.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>акустические измерения</kwd><kwd>акустика речи</kwd><kwd>голосовой тракт</kwd><kwd>речевой сигнал</kwd><kwd>авторегрессионная модель</kwd><kwd>проблема малых выборок</kwd></kwd-group><kwd-group xml:lang="en"><kwd>acoustic measurements</kwd><kwd>speech acoustics</kwd><kwd>voice tract</kwd><kwd>speech signal</kwd><kwd>autoregressive model</kwd><kwd>small sample problem</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">Gibson J., Entropy, 2018, vol. 20, no. 10, 7502018. https://doi.org/10.3390/e20100750</mixed-citation><mixed-citation xml:lang="en">Gibson J., Entropy, 2018, vol. 20, no. 10, 7502018. https://doi.org/10.3390/e20100750</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Savchenko V. 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