{"id":99675,"date":"2021-04-06T22:22:41","date_gmt":"2021-04-06T20:22:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-opublikoval-audiokodek-lyra-dlya-peredachi-rechi-pri-plohom-kachestve-svyazi"},"modified":"2021-04-06T22:22:41","modified_gmt":"2021-04-06T20:22:42","slug":"google-opublikoval-audiokodek-lyra-dlya-peredachi-rechi-pri-plohom-kachestve-svyazi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/google-opublikoval-audiokodek-lyra-dlya-peredachi-rechi-pri-plohom-kachestve-svyazi","title":{"rendered":"Google avaldas Lyra audiosisendi kodeki, et edastada k\u00f5net halva \u00fchenduse kvaliteedi korral","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Google esitles uut audio kodekit Lyra, mis on optimeeritud maksimaalse k\u00f5nekvaliteedi saavutamiseks isegi v\u00e4ga aeglaste sidekanalite kasutamisel. Lyra rakenduse kood on kirjutatud C++ keeles ja avatud Apache 2.0 litsentsi alusel, kuid t\u00f6\u00f6ks vajalikest s\u00f5ltuvustest leidub ka patenteeritud teek libsparse_inference.so, mis sisaldab matemaatilise arvutuse tuumrakendust. M\u00e4rgitakse, et patenteeritud teek on ajutine \u2014 tulevikus lubab Google v\u00e4lja t\u00f6\u00f6tada avatud asenduse ja tagada erinevate platvormide toe. <\/p>\n

H\u00e4\u00e4lte edastamise kvaliteedi osas madalatel kiirusel \u00fcletab Lyra traditsioonilisi koodekeid, mis kasutavad digitaalse signaalit\u00f6\u00f6tluse meetodeid. K\u00f5rge h\u00e4\u00e4lkvaliteedi saavutamiseks piiratud edastatavuse tingimustes rakendatakse Lyra-s tavaliste heli tihendamise ja signaalimuunduse meetodite k\u00f5rval ka masin\u00f5ppetehnoloogiat, mis v\u00f5imaldab rekonstruerida puuduvat teavet k\u00f5ne t\u00fc\u00fcpiliste omaduste p\u00f5hjal. Heligeneratsiooniks kasutatud mudel on koolitatud mitme tuhande tunni h\u00e4\u00e4le\u00fclesannete andmetega enam kui 70 keeles.

\"Google<\/center> <\/p>\n

Koodek sisaldab kodeerijat ja dekodeerijat. Kodeerija t\u00f6\u00f6 aluseks on helidate parameetrite v\u00e4ljav\u00f5tmine iga 40 millisekundi j\u00e4rel, nende pakkimine ja edastamine vastuv\u00f5tjale \u00fcle v\u00f5rgu. Andmete edastamiseks piisab 3 kilobiti sekundis kiirusest. V\u00e4ljav\u00f5etavad heliparameetrid h\u00f5lmavad logaritmilisi mel-spekterogramme, mis arvestavad k\u00f5ne energia omadusi erinevates sagedusvahemikes ja on ette valmistatud inimk\u00f5rva kuulmisv\u00f5imekuse mudelit silmas pidades.

\"Google<\/center> <\/p>\n

Dekodeerijas kasutatakse genereerivat mudelit, mis taastab edastatud heliparameetrite p\u00f5hjal k\u00f5nesignaali. Arvutuskoormuse v\u00e4hendamiseks on kasutusele v\u00f5etud kerge mudel, mis tugineb korduvatele n\u00e4rviv\u00f5rkudele, olles variants k\u00f5nes\u00fcnteesi mudelist WaveRNN, millel on madalam valimissagedus, kuid samal ajal genereeritakse paralleelselt mitu signaali erinevates sagedusvahemikes. Saadud signaalid pannakse seej\u00e4rel \u00fcksteise peale, et luua \u00fcks v\u00e4ljundsignaal, mis vastab m\u00e4\u00e4ratud diskreetimissagedusele. <\/p>\n

Kiirendamiseks on rakendatud ka spetsialiseeritud protsessorijuhiseid, mis on saadaval 64-bitistes ARM protsessorites. Selle tulemusena saab Lyra koodekit, maldaga masin\u00f5ppe rakendamisel, kasutada k\u00f5ne kodeerimiseks ja dekodeerimiseks reaalajas keskmise hinnaklassi nutitelefonides, demonstreerides signaali edastamise viivitust 90 millisekundi tasemel.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a Lyra, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0440\u0435\u0447\u0438 \u0434\u0430\u0436\u0435 \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043e\u0447\u0435\u043d\u044c \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u044b\u0445 \u043a\u0430\u043d\u0430\u043b\u043e\u0432 \u0441\u0432\u044f\u0437\u0438. \u041a\u043e\u0434 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 Lyra \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 C++ \u0438 \u043e\u0442\u043a\u0440\u044b\u0442 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0, \u043d\u043e \u0432 \u0447\u0438\u0441\u043b\u0435 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0430\u044f \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 libsparse_inference.so \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u044f\u0434\u0440\u0430 \u0434\u043b\u044f \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0430\u044f \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":99676,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-99675","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"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\udd47Google avaldas audokodeki Lyra k\u00f5ne edastamiseks halva kvaliteediga sideteede korral | ProHoster","description":"Google tutvustas uut audokodekit Lyra, mis on optimeeritud maksimaalse k\u00f5ne\u00fclekande kvaliteedi saavutamiseks isegi v\u00e4ga aeglaste sideteede korral. Lyra rakenduskood on kirjutatud C++ ja avatud Apache 2.0 litsentsi alusel, kuid vajalikud s\u00f5ltuvused h\u00f5lmavad ka kinnise l\u00e4htekoodiga raamatukogu libsparse_inference.so, mis sisaldab matemaatiliste arvutuste tuuma. M\u00e4rgitakse, et kinnise l\u00e4htekoodiga raamatukogu on ajutine.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/google-opublikoval-audiokodek-lyra-dlya-peredachi-rechi-pri-plohom-kachestve-svyazi","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a Lyra \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0440\u0435\u0447\u0438 \u043f\u0440\u0438 \u043f\u043b\u043e\u0445\u043e\u043c \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0441\u0432\u044f\u0437\u0438 | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a Lyra, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0440\u0435\u0447\u0438 \u0434\u0430\u0436\u0435 \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043e\u0447\u0435\u043d\u044c \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u044b\u0445 \u043a\u0430\u043d\u0430\u043b\u043e\u0432 \u0441\u0432\u044f\u0437\u0438. \u041a\u043e\u0434 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 Lyra \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 C++ \u0438 \u043e\u0442\u043a\u0440\u044b\u0442 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0, \u043d\u043e \u0432 \u0447\u0438\u0441\u043b\u0435 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u0430\u044f \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 libsparse_inference.so \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u044f\u0434\u0440\u0430 \u0434\u043b\u044f \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 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