{"id":108013,"date":"2023-04-21T12:48:18","date_gmt":"2023-04-21T10:48:18","guid":{"rendered":"https:\/\/prohoster.info\/?p=108013"},"modified":"2023-04-21T16:01:18","modified_gmt":"2023-04-21T14:01:18","slug":"dostupen-audiokodek-opus-1-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/dostupen-audiokodek-opus-1-4","title":{"rendered":"Saadaval on audio-koodek Opus 1.4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Xiph.org, avatud video- ja audiokoodekite arendamisega tegelev organisatsioon, on v\u00e4lja andnud audio-koodeki Opus 1.4.0, mis tagab k\u00f5rge kvaliteedi kodeerimise ja minimaalset latentsust nii k\u00f5rge bitikiirusaga voogedastuse kui ka piiratud ribalaiusega VoIP-telefonia rakenduste puhul. Koodeki kodeerija ja dekodeerija standardrakendused on jaotatud BSD litsentsi alusel. Opus formaadi t\u00e4ielikud spetsifikatsioonid on \u00fcldiselt k\u00e4ttesaadavad, tasuta ja heaks kiidetud internetistandardina (RFC 6716).     <\/p>\n<p>Koodek on loodud parimate tehnoloogiate kombinatsiooni kaudu, kasutades Xiph.org'i loodud koodekit CELT ja Skype'i v\u00e4lja t\u00f6\u00f6tatud koodekit SILK. Lisaks Skype'ile ja Xiph.Org'ile osalesid Opuse arendamisel ka sellised ettev\u00f5tted nagu Mozilla, Octasic, Broadcom ja Google. Opusesse kaasatud patendid on s\u00e4ilitatud osalenud ettev\u00f5tete poolt piiranguteta kasutamiseks ilma litsentsitasude maksmiseta. K\u00f5ik Opusega seotud intellektuaalomandi \u00f5igused ja patente k\u00e4sitlevad litsentsid delegeeritakse automaatselt Opust kasutavatele rakendustele ja toodetele ilma lisalubade vajaduseta. Kliendile, kes kasutas Opust, ei kehti piirangud rakenduse ja alternatiivsete kolmandate osapoolte rakenduste loomise suhtes. K\u00f5ik antud \u00f5igused t\u00fchistatakse, kui keegi algatab Opuse tehnoloogiaid h\u00f5lmava patendi vaidluse \u00fcksk\u00f5ik millise Opuse kasutaja vastu.    <\/p>\n<p>Opus paistab silma k\u00f5rge kvaliteedi kodeerimise ja minimaalsete latentsustega nii k\u00f5rge bitikiirusaga voogedastuse kui ka piiratud ribalaiusega VoIP-telefonia rakenduste puhul. Varem tunnustati Opust parima koodekina 64Kbit bitikiirusel (Opus \u00fcletas sellised konkurendid nagu Apple HE-AAC, Nero HE-AAC, Vorbis ja AAC LC). Opust toetavate toodete seas on m\u00e4rkimisv\u00e4\u00e4rsed brauser Firefox, raamistiku GStreamer ja paket FFmpeg.        <\/p>\n<p>Opuse peamised omadused:  <\/p>\n<ul>\n<li class=\"l\">Bitikiirus vahemikus 5 kuni 510 Kbit\/s;  <\/li>\n<li class=\"l\">Sampling frequency from 8 to 48 kHz;  <\/li>\n<li class=\"l\">Raamide kestus vahemikus 2.5 kuni 120 millisekundit;  <\/li>\n<li class=\"l\">Support for constant (CBR) and variable (VBR) bitrates;  <\/li>\n<li class=\"l\">Support for narrowband and wideband audio;  <\/li>\n<li class=\"l\">Support for both voice and music;  <\/li>\n<li class=\"l\">Support for stereo and mono;    <\/li>\n<li class=\"l\"> Tugi d\u00fcnaamilisele bitikiirus, ribalaiuse ja raami suuruse seadistamisele;  <\/li>\n<li class=\"l\">Ability to recover the audio stream in case of packet loss (PLC);  <\/li>\n<li class=\"l\"> Tugi kuni 255 kanalile (mitmevoogilised raamid)  <\/li>\n<li class=\"l\">Availability of implementations using both floating-point and fixed-point arithmetic.  <\/li>\n<\/ul>\n<p>Opus 1.4 peamised uuendused:  <\/p>\n<ul>\n<li class=\"l\"> Optimeeritud kodeerimise parameetrid, mille eesm\u00e4rk on parandada helikvaliteedi subjektiivseid n\u00e4itajaid FEC (Forward Error Correction) kasutamisel, et taastada kahjustatud v\u00f5i kadunud pakette bitikiirusel 16 kuni 24 kbs (LBRR, Low Bit-Rate Redundancy).\n<li class=\"l\"> Lisatud v\u00f5imalus OPUS_SET_INBAND_FEC, et aktiveerida FEC vigade parandamise re\u017eiim, kuid ilma SILK re\u017eiimi sunniviisilise aktiveerimiseta (FEC ei kasutata CELT re\u017eiimis).\n<li class=\"l\"> Parandatud DTX (Discontinuous Transmission) re\u017eiimi rakendust, mis v\u00f5imaldab edastamise peatamist, kui heli puudub.\n<li class=\"l\"> Lisatud toetus Meson ehituss\u00fcsteemile ja parendatud CMake'i kasutamisel ehitamise toetust.\n<li class=\"l\"> Lisatud katsemehhanism \u00abReaalajas pakettide kadumise varjamine\u00bb kadunud k\u00f5nefragmentide taastamiseks, mis on p\u00f5hjustatud pakettide kadumisest, kasutades masin\u00f5ppe tehnoloogiaid.\n<li class=\"l\"> Lisatud katse elluviimine mehhanismist \u00abs\u00fcgav redundantsus\u00bb, mis kasutab masin\u00f5ppes\u00fcsteemi helide taastamise t\u00f5hususe suurendamiseks pakettide kadumise korral.      <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59009\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Xiph.Org, \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0430\u044f\u0441\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u044b\u0445 \u0432\u0438\u0434\u0435\u043e- \u0438 \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a\u043e\u0432, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0440\u0435\u043b\u0438\u0437 \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a\u0430 Opus 1.4.0, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0432\u044b\u0441\u043e\u043a\u043e\u0435 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u0443\u044e \u0437\u0430\u0434\u0435\u0440\u0436\u043a\u0443 \u043a\u0430\u043a \u043f\u0440\u0438 \u0441\u0436\u0430\u0442\u0438\u0438 \u043f\u043e\u0442\u043e\u043a\u043e\u0432\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u0430 \u0441 \u0432\u044b\u0441\u043e\u043a\u0438\u043c \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u043e\u043c, \u0442\u0430\u043a \u0438 \u043f\u0440\u0438 \u0441\u0436\u0430\u0442\u0438\u0438 \u0433\u043e\u043b\u043e\u0441\u0430 \u0432 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0445 \u043f\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445 VoIP-\u0442\u0435\u043b\u0435\u0444\u043e\u043d\u0438\u0438. \u042d\u0442\u0430\u043b\u043e\u043d\u043d\u044b\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD. \u041f\u043e\u043b\u043d\u044b\u0435 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 Opus \u043e\u0431\u0449\u0435\u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b, \u0431\u0435\u0441\u043f\u043b\u0430\u0442\u043d\u044b [&hellip;]<\/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-108013","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Xiph.Org, \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0430\u044f\u0441\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u044b\u0445 \u0432\u0438\u0434\u0435\u043e- \u0438 \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a\u043e\u0432, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0440\u0435\u043b\u0438\u0437 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