{"id":105529,"date":"2022-11-12T21:36:39","date_gmt":"2022-11-12T19:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-otkrytogo-audiokodeka-lyra-1-3"},"modified":"2022-11-12T21:36:39","modified_gmt":"2022-11-12T19:36:39","slug":"obnovlenie-otkrytogo-audiokodeka-lyra-1-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/obnovlenie-otkrytogo-audiokodeka-lyra-1-3","title":{"rendered":"Aktualizacja otwartego kodeka audio Lyra 1.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Firma Google opublikowa\u0142a wersj\u0119 kodeka audio Lyra 1.3, kt\u00f3ry ma na celu osi\u0105gni\u0119cie wysokiej jako\u015bci przesy\u0142ania g\u0142osu przy ograniczonej ilo\u015bci przesy\u0142anych informacji. Jako\u015b\u0107 mowy przy bitrate'ach 3,2 kbps, 6 kbps i 9,2 kbps z u\u017cyciem kodeka Lyra odpowiada mniej wi\u0119cej bitrate'om 10 kbps, 13 kbps i 14 kbps przy u\u017cyciu kodeka Opus. W celu rozwi\u0105zania postawionego zadania, opr\u00f3cz standardowych metod kompresji d\u017awi\u0119ku i przetwarzania sygna\u0142\u00f3w, w Lyra zastosowano model mowy oparty na systemie uczenia maszynowego, kt\u00f3ry pozwala na rekonstrukcj\u0119 brakuj\u0105cych informacji na podstawie typowych cech mowy. Referencyjna implementacja kodu napisana jest w C++ i jest udost\u0119pniana na licencji Apache 2.0. <\/p>\n

W przeciwie\u0144stwie do radykalnie przeprojektowanej wersji Lyra 1.2 z pa\u017adziernika, kt\u00f3ra zosta\u0142a przeniesiona na now\u0105 architektur\u0119 sieci neuronowej, w wersji 1.3 przeprowadzono optymalizacj\u0119 modelu uczenia maszynowego bez zmian architektonicznych. W nowej wersji, do przechowywania wag i wykonywania operacji arytmetycznych zamiast 32-bitowych liczb zmiennoprzecinkowych wykorzystano 8-bitowe liczby ca\u0142kowite, co doprowadzi\u0142o do zmniejszenia rozmiaru modelu o 43% oraz zwi\u0119kszenia wydajno\u015bci modelu o 20% podczas testowania na smartfonie Pixel 6 Pro. Jako\u015b\u0107 mowy pozosta\u0142a na tym samym poziomie, jednak format przesy\u0142anych danych uleg\u0142 zmianie i nie jest kompatybilny z poprzednimi wersjami.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0432\u044b\u043f\u0443\u0441\u043a \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a\u0430 Lyra 1.3, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0433\u043e\u043b\u043e\u0441\u0430 \u0432 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u044a\u0451\u043c\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438. \u041a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u0440\u0435\u0447\u0438 \u043d\u0430 \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u0430\u0445 3.2 kbps, 6 kbps \u0438 9.2 kbps \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u0434\u0435\u043a\u0430 Lyra \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u0430\u043c 10 kbps, 13 kbps \u0438 14 kbps \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u0434\u0435\u043a\u0430 Opus. \u0414\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0437\u0430\u0434\u0430\u0447\u0438 \u043f\u043e\u043c\u0438\u043c\u043e \u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u043c\u0435\u0442\u043e\u0434\u043e\u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105529","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Aktualizacja otwartego kodeka audio Lyra 1.3 | ProHoster","description":"Firma Google opublikowa\u0142a wersj\u0119 kodeka audio Lyra 1.3, maj\u0105cego na celu osi\u0105gni\u0119cie wysokiej jako\u015bci przesy\u0142ania g\u0142osu w warunkach ograniczonej ilo\u015bci przesy\u0142anych 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