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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.2023-6-56-62</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1876</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>Метод сравнительного тестирования параметрических оценок спектра мощности: спектральный анализ через синтез временно́ го ряда</article-title><trans-title-group xml:lang="en"><trans-title>Method for comparison testing of parametric power spectrum estimates: spectral analysis via time series synthesis</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>21</day><month>07</month><year>2023</year></pub-date><volume>0</volume><issue>6</issue><fpage>56</fpage><lpage>62</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/1876">https://www.izmt.ru/jour/article/view/1876</self-uri><abstract><p>Рассмотрена задача сравнительного тестирования параметрических оценок спектра мощности временно́го ряда. Показано, что при её решении возникает острая проблема оптимизации параметров спектральных оценок в условиях малых выборок наблюдений. Для преодоления указанной проблемы предложено использовать общесистемную концепцию спектрального анализа через синтез временно́го ряда. На основе данной концепции разработан регулярный метод сравнительного тестирования параметрических оценок спектра мощности, полученных по временно́му ряду конечной длительности. В рамках метода решения принимаются по результатам проверки статистических гипотез об однородности двух выборок: конечной эмпирической, составленной по результатам проведённых наблюдений, и бесконечной виртуальной, синтезированной математически согласно каждой отдельной параметрической оценке в ряду рассматриваемых спектральных альтернатив. Критерием служит принцип минимума информационного рассогласования выборок по Кульбаку-Лейблеру. Представлен пример практического применения разработанного метода в задаче дискретного спектрального моделирования речевых сигналов. Показана способность метода выявлять образцы неустойчивых параметрических оценок авторегрессионного типа. Полученные результаты предназначены для использования в области речевой акустики, а также технической и медицинской диагностики, где параметрические методы спектрального анализа находят на практике все более широкое применение.</p></abstract><trans-abstract xml:lang="en"><p>The task of comparison testing of a time series power spectrum parametric estimates is considered. It is shown that the key problem in solving it is the optimization of the parameters of spectral estimates under conditions of small samples of observations. To overcome this problem, it is proposed to use the system-wide concept of analysis through synthesis. Based on this concept, a regular method for comparison testing of parametric estimates of the power spectrum obtained from a time series of finite duration has been developed. Decisions in it are made based on the results of testing statistical hypotheses about the homogeneity of two samples: a finite empirical one, compiled based on the results of observations, and an infinite virtual one, mathematically synthesized according to each individual parametric estimate in the series of considered spectral alternatives. In this case, the criterion is the principle of minimum information discrepancy between samples according to Kullback-Leibler. An example of the practical application of the developed method in the problem of discrete spectral modeling of speech signals is presented. The ability of the method to identify patterns of unstable parametric estimates of the autoregressive type has been established. The results obtained are intended for use in the field of speech acoustics, as well as technical and medical diagnostics, where parametric methods of spectral analysis are increasingly being used in practice.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>временно́й ряд</kwd><kwd>случайный процесс</kwd><kwd>спектральный анализ</kwd><kwd>речевой сигнал</kwd><kwd>авторегрессионная модель</kwd><kwd>устойчивость модели</kwd><kwd>анализ через синтез</kwd></kwd-group><kwd-group xml:lang="en"><kwd>time serie</kwd><kwd>random process</kwd><kwd>spectral analysis</kwd><kwd>speech signal</kwd><kwd>autoregressive model</kwd><kwd>model stability</kwd><kwd>analysis through synthesis</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">Kreinovich V., Dimuro G. P., da Rocha Costa A. C. A General Description of Measuring Devices: First Step – Finite Set of Possible Outcomes. 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