{"id":115540,"date":"2024-05-04T19:52:06","date_gmt":"2024-05-04T17:52:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/osnovatel-qemu-i-ffmpeg-opublikoval-zvukovoj-kodek-tsac"},"modified":"2024-05-04T19:52:06","modified_gmt":"2024-05-04T17:52:06","slug":"osnovatel-qemu-i-ffmpeg-opublikoval-zvukovoj-kodek-tsac","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/osnovatel-qemu-i-ffmpeg-opublikoval-zvukovoj-kodek-tsac","title":{"rendered":"The founder of QEMU and FFmpeg has published the TSAC audio codec.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A francia matematikus Fabrice Bellard, aki l\u00e9trehozta a QEMU, FFmpeg, BPG, QuickJS, TinyGL \u00e9s TinyCC projekteket, k\u00f6zz\u00e9tette a TSAC hangk\u00f3dol\u00e1si form\u00e1tumot \u00e9s a vele kapcsolatos eszk\u00f6z\u00f6ket a hangf\u00e1jlok t\u00f6m\u00f6r\u00edt\u00e9s\u00e9hez \u00e9s kicsomagol\u00e1s\u00e1hoz. A form\u00e1tum c\u00e9lja az adatok nagyon alacsony bitr\u00e1t\u00e1n t\u00f6rt\u00e9n\u0151 tov\u00e1bb\u00edt\u00e1sa, p\u00e9ld\u00e1ul 5.5 kb\/s mono \u00e9s 7.5 kb\/s stereo eset\u00e9n, mik\u00f6zben meg\u0151rzi a zene \u00e9s besz\u00e9d megfelel\u0151 min\u0151s\u00e9g\u00e9t. A TSAC haszn\u00e1lat\u00e1val egy 3,5 perces, 44.1 kHz-es mintav\u00e9teli frekvenci\u00e1j\u00fa (stereo) zenesz\u00e1mot 192 KB m\u00e9ret\u0171 f\u00e1jlba lehet csomagolni, amely a laikus f\u00fcl sz\u00e1m\u00e1ra szinte megk\u00fcl\u00f6nb\u00f6ztethetetlen az eredetit\u0151l. A projekt k\u00f3dja MIT licenc alatt terjeszt\u0151dik. <\/p>\n

A TSAC l\u00e9trehoz\u00e1s\u00e1nak alapjak\u00e9nt a Descript hangkodek ker\u00fclt felhaszn\u00e1l\u00e1sra, amely kib\u0151v\u00edt\u00e9sre ker\u00fclt a sztere\u00f3 hang t\u00e1mogat\u00e1s\u00e1val, \u00e9s \u00e1tkonvert\u00e1l\u00e1sra ker\u00fclt egy m\u00e1sik, neur\u00e1lis h\u00e1l\u00f3zaton alapul\u00f3 g\u00e9pi tanul\u00e1si modell haszn\u00e1lat\u00e1ra az \u201e\u00e1talak\u00edt\u00f3\u201d architekt\u00far\u00e1val. Ez lehet\u0151v\u00e9 tette a t\u00f6m\u00f6r\u00edt\u00e9s m\u00e9rt\u00e9k\u00e9nek n\u00f6vel\u00e9s\u00e9t az elveszett r\u00e9szletek rekonstru\u00e1l\u00e1s\u00e1val az emberi hall\u00e1s \u00e9rz\u00e9kel\u00e9s\u00e9nek modellez\u00e9s\u00e9vel. A modell t\u00f6m\u00f6r\u00edtett form\u00e1ban k\u00f6r\u00fclbel\u00fcl 200 MB-ot foglal el, \u00e9s determinisztikus reprezent\u00e1ci\u00f3ban van, ami garant\u00e1lja, hogy b\u00e1rmilyen CPU\/GPU \u00e9s a sz\u00e1m\u00edt\u00e1sok sor\u00e1n felhaszn\u00e1lt sz\u00e1lak sz\u00e1ma mellett az eredm\u00e9ny mindig azonos legyen. <\/p>\n

A k\u00f3dol\u00f3 k\u00e9pes csak CPU-t haszn\u00e1lni a sz\u00e1m\u00edt\u00e1sokhoz (az AVX2 utas\u00edt\u00e1sok gyors\u00edt\u00e1s\u00e1hoz t\u00e1mogatottak), de a magas teljes\u00edtm\u00e9ny el\u00e9r\u00e9se \u00e9rdek\u00e9ben aj\u00e1nlott GPU-t haszn\u00e1lni. Jelenlegi form\u00e1j\u00e1ban a CUDA API alkalmazhat\u00f3 az NVIDIA GPU-k felgyors\u00edt\u00e1s\u00e1ra az Ampere, ADA \u00e9s Hopper mikroarchitekt\u00far\u00e1k (RTX 3090, RTX 4090, RTX A6000, A100 \u00e9s H100) eset\u00e9n, amelyek legal\u00e1bb 4 GB videomem\u00f3ri\u00e1val rendelkeznek. A hangf\u00e1jlok k\u00f3dol\u00e1s el\u0151tti \u00e1talak\u00edt\u00e1s\u00e1hoz FFmpeg haszn\u00e1lhat\u00f3.

eredetistereo 6.21 kb\/smono 4.71 kb\/sstereo 2.57 kb\/s<\/center> <\/p>\n

Ezenk\u00edv\u00fcl eml\u00edt\u00e9st \u00e9rdemel a Bellar \u00e1ltal fejlesztett ts_zip seg\u00e9dprogram friss\u00edt\u00e9se, amely a sz\u00f6veges adatok hat\u00e9kony t\u00f6m\u00f6r\u00edt\u00e9s\u00e9re szolg\u00e1l, a g\u00e9pi tanul\u00e1son alapul\u00f3 token-el\u0151rejelz\u00e9si mechanizmus \u00e9s a nagym\u00e9ret\u0171 RWKV 169M v4 nyelvi modell felhaszn\u00e1l\u00e1s\u00e1val. A wikip\u00e9dia arch\u00edvum\u00e1nak t\u00f6m\u00f6r\u00edt\u00e9se sor\u00e1n a ts_zip seg\u00e9dprogram 7,3-szoros t\u00f6m\u00f6r\u00edt\u00e9st \u00e9rt el, m\u00edg a Linux kernel k\u00f3dj\u00e1nak t\u00f6m\u00f6r\u00edt\u00e9se 1,2 eset\u00e9n 7,8-szoros t\u00f6m\u00f6r\u00edt\u00e9st eredm\u00e9nyezett. \u00d6sszehasonl\u00edt\u00e1sk\u00e9nt az xz seg\u00e9dprogram haszn\u00e1lat\u00e1val el\u00e9rt t\u00f6m\u00f6r\u00edt\u00e9si szintek 4,7 \u00e9s 5,5-sz\u00f6r\u00f6s volt, respectively. A t\u00f6m\u00f6r\u00edt\u00e9s magas hat\u00e9konys\u00e1g\u00e1nak \u00e1ra a lass\u00fa t\u00f6m\u00f6r\u00edt\u00e9si sebess\u00e9g \u00e9s a magas er\u0151forr\u00e1sig\u00e9ny (minimum 4 GB RAM). RTX 4090 GPU-val a t\u00f6m\u00f6r\u00edt\u00e9si teljes\u00edtm\u00e9ny k\u00f6r\u00fclbel\u00fcl 1 MB\/s.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0424\u0440\u0430\u043d\u0446\u0443\u0437\u0441\u043a\u0438\u0439 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u043a \u0424\u0430\u0431\u0440\u0438\u0441 \u0411\u0435\u043b\u043b\u0430\u0440 (Fabrice Bellard), \u043e\u0441\u043d\u043e\u0432\u0430\u0432\u0448\u0438\u0439 \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0435\u043a\u0442\u044b QEMU, FFmpeg, BPG, QuickJS, TinyGL \u0438 TinyCC, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0444\u043e\u0440\u043c\u0430\u0442 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0437\u0432\u0443\u043a\u0430 TSAC \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0439 \u0441 \u043d\u0438\u043c \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u0434\u043b\u044f \u0441\u0436\u0430\u0442\u0438\u044f \u0438 \u0440\u0430\u0441\u043f\u0430\u043a\u043e\u0432\u043a\u0438 \u0437\u0432\u0443\u043a\u043e\u0432\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432. \u0424\u043e\u0440\u043c\u0430\u0442 \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d \u043d\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0443 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441 \u043e\u0447\u0435\u043d\u044c \u043d\u0438\u0437\u043a\u0438\u043c \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u043e\u043c, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, 5.5 kb\/s \u0434\u043b\u044f \u043c\u043e\u043d\u043e \u0438 7.5 kb\/s \u0434\u043b\u044f \u0441\u0442\u0435\u0440\u0435\u043e, \u043f\u0440\u0438 \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0438 […]<\/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-115540","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\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\udd47A QEMU \u00e9s az FFmpeg alap\u00edt\u00f3ja k\u00f6zz\u00e9tette a TSAC hangk\u00f3dert | ProHoster","description":"A francia matematikus Fabrice Bellard, aki a QEMU, FFmpeg, BPG, QuickJS, TinyGL \u00e9s TinyCC projektek alap\u00edt\u00f3ja volt, k\u00f6zz\u00e9tette a TSAC hangk\u00f3dol\u00e1si form\u00e1tumot \u00e9s ehhez kapcsol\u00f3d\u00f3 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\u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u043a \u0424\u0430\u0431\u0440\u0438\u0441 \u0411\u0435\u043b\u043b\u0430\u0440 (Fabrice Bellard), \u043e\u0441\u043d\u043e\u0432\u0430\u0432\u0448\u0438\u0439 \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0435\u043a\u0442\u044b QEMU, FFmpeg, BPG, QuickJS, TinyGL \u0438 TinyCC, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0444\u043e\u0440\u043c\u0430\u0442 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0437\u0432\u0443\u043a\u0430 TSAC \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0439 \u0441 \u043d\u0438\u043c \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 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