{"id":114134,"date":"2024-03-05T18:26:01","date_gmt":"2024-03-05T16:26:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-audiokodek-opus-1-5"},"modified":"2024-03-05T18:26:01","modified_gmt":"2024-03-05T16:26:01","slug":"dostupen-audiokodek-opus-1-5","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/dostupen-audiokodek-opus-1-5","title":{"rendered":"Codec-ul audio Opus 1.5 este disponibil","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dup\u0103 aproape un an de dezvoltare, organiza\u021bia Xiph.Org, care se ocup\u0103 cu dezvoltarea de codec-uri video \u0219i audio open-source, a lansat versiunea 1.5 a codec-ului audio Opus, care asigur\u0103 o calitate \u00eenalt\u0103 a codific\u0103rii \u0219i o laten\u021b\u0103 minim\u0103 at\u00e2t \u00een compresia sunetului pentru streaming la rate mari de bi\u021bi, c\u00e2t \u0219i \u00een compresia vocii \u00een aplica\u021bii VoIP cu l\u0103\u021bimi de band\u0103 restr\u00e2nse. Implement\u0103rile de referin\u021b\u0103 pentru encoder \u0219i decoder sunt distribuite sub licen\u021ba BSD. Specifica\u021biile complete ale formatului Opus sunt disponibile public \u0219i sunt aprobate ca standard internet (RFC 6716).     <\/p>\n<p>Codec-ul a fost creat prin combinarea celor mai bune tehnologii din codec-ul CELT dezvoltat de organiza\u021bia Xiph.org \u0219i codec-ul SILK deschis de compania Skype. Pe l\u00e2ng\u0103 Skype \u0219i Xiph.Org, la dezvoltarea Opus au contribuit \u0219i alte companii, cum ar fi Mozilla, Octasic, Broadcom \u0219i Google. Brevetele implicate \u00een Opus sunt furnizate de companiile participante la dezvoltare pentru utilizare nelimitat\u0103, f\u0103r\u0103 plata de redeven\u021be. Toate drepturile de proprietate intelectual\u0103 \u0219i licen\u021bele pe brevete asociate Opus sunt delegate automat aplica\u021biilor \u0219i produselor care folosesc Opus, f\u0103r\u0103 a necesita aprob\u0103ri suplimentare. Nu exist\u0103 restric\u021bii privind domeniul de aplicare \u0219i crearea de implement\u0103ri alternative de c\u0103tre ter\u021bi. Cu toate acestea, toate drepturile furnizate pot fi revocate \u00een cazul \u00een care se ini\u021biaz\u0103 o disput\u0103 legat\u0103 de brevete referitoare la tehnologiile Opus \u00eempotriva oric\u0103rui utilizator Opus.    <\/p>\n<p>Opus se distinge prin calitatea \u00eenalt\u0103 a cod\u0103rii \u0219i laten\u021ba minim\u0103 at\u00e2t pentru comprimarea sunetului de \u00eenalt\u0103 calitate, c\u00e2t \u0219i pentru comprimarea vocii \u00een aplica\u021bii VoIP cu l\u0103\u021bimi de band\u0103 limitate. Anterior, Opus a fost recunoscut ca fiind cel mai bun codec la un bitrate de 64Kbit (Opus a dep\u0103\u0219it concuren\u021bii precum Apple HE-AAC, Nero HE-AAC, Vorbis \u0219i AAC LC). Printre produsele care suport\u0103 Opus din cutie se num\u0103r\u0103 browserul Firefox, framework-ul GStreamer \u0219i pachetul FFmpeg.        <\/p>\n<p>Func\u021bionalit\u0103\u021bile principale ale Opus:  <\/p>\n<ul>\n<li class=\"l\">Bitrate de la 5 la 510 Kbit\/s;  <\/li>\n<li class=\"l\">Frecven\u021b\u0103 de e\u0219antionare de la 8 la 48KHz;  <\/li>\n<li class=\"l\">Durata cadrelor de la 2.5 la 120 milisecunde;  <\/li>\n<li class=\"l\">Suport pentru bitrate constant (CBR) \u0219i variabil (VBR);  <\/li>\n<li class=\"l\">Suport pentru sunet \u00eengust \u0219i lat;  <\/li>\n<li class=\"l\">Suport pentru voce \u0219i muzic\u0103;  <\/li>\n<li class=\"l\">Suport pentru stereo \u0219i mono;    <\/li>\n<li class=\"l\"> Suport pentru ajustarea dinamic\u0103 a bitrate-ului, capacit\u0103\u021bii de transmisie \u0219i dimensiunii cadrelor;  <\/li>\n<li class=\"l\">Capacitatea de a restaura fluxul sonor \u00een caz de pierdere a cadrelor (PLC);  <\/li>\n<li class=\"l\"> Suport pentru p\u00e2n\u0103 la 255 de canale (cadre multiplu flux);  <\/li>\n<li class=\"l\">Disponibilitatea implement\u0103rilor folosind aritmetica cu virgul\u0103 mobil\u0103 \u0219i fix\u0103.  <\/li>\n<\/ul>\n<p>Nout\u0103\u021bi cheie \u00een Opus 1.5:  <\/p>\n<ul>\n<li class=\"l\"> \u00cen encoder \u0219i decoder, utilizarea tehnologiilor de \u00eenv\u0103\u021bare automat\u0103 a fost extins\u0103.\n<li class=\"l\"> A fost implementat mecanismul \u201eDeep Redundancy\u201d (DRED), care folose\u0219te \u00eenv\u0103\u021barea automat\u0103 pentru a restaura fragmentele de sunet pierdute din cauza pierderii pachetelor.\n<li class=\"l\"> A fost \u00eembun\u0103t\u0103\u021bit\u0103 recuperarea fluxului de sunet \u00een cazul pierderii de cadre prin mecanismul de \u00eenv\u0103\u021bare automat\u0103 Deep PLC (Packet Loss Concealment).\n<li class=\"l\"> A fost \u00eembun\u0103t\u0103\u021bit\u0103 calitatea transmisiei vocii la rate joase de bi\u021bi (~ 6 Kbps).\n<li class=\"l\"> Au fost ad\u0103ugate optimiz\u0103ri suplimentare care utilizeaz\u0103 instruc\u021biuni AVX2 (x86) \u0219i Neon (ARM).\n<li class=\"l\"> A fost ad\u0103ugat suport pentru formatul de sunet ambisonic de ordinul 4 \u0219i 5, care \u021bine cont de difuzarea sunetului nu doar \u00een plan orizontal, ci \u0219i \u00een vertical\u0103 (pentru a determina sursa sunetului deasupra sau dedesubt).       <\/ul>\n<p>Pe fondul acestor actualiz\u0103ri, a fost lansat\u0103 versiunea Opus 1.5.1, care rezolv\u0103 problemele de compilare utiliz\u00e2nd sistemul de compilare Meson (compilarea cu CMake nu a fost afectat\u0103).<br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60731\">opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\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 1.5, \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 [&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-114134","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0433\u043e\u0434\u0430 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