{"id":162582,"date":"2026-02-22T23:12:07","date_gmt":"2026-02-22T21:12:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/alyans-aomedia-razvivaet-zvukovoj-kodek-oac-open-audio-codec-osnovannyj-na-opus"},"modified":"2026-02-22T23:12:07","modified_gmt":"2026-02-22T21:12:07","slug":"alyans-aomedia-razvivaet-zvukovoj-kodek-oac-open-audio-codec-osnovannyj-na-opus","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/alyans-aomedia-razvivaet-zvukovoj-kodek-oac-open-audio-codec-osnovannyj-na-opus","title":{"rendered":"A Alian\u00e7a AOMedia desenvolve o codec de \u00e1udio OAC (Open Audio Codec), baseado em Opus.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A Alian\u00e7a Open Media (AOMedia), respons\u00e1vel pelo desenvolvimento do formato de codifica\u00e7\u00e3o de v\u00eddeo AV1\/AV2, do formato de \u00e1udio espacial IAMF e do formato de imagens AVIF, iniciou o desenvolvimento do codec de \u00e1udio Open Audio Codec (OAC), que \u00e9 apresentado como uma continua\u00e7\u00e3o do desenvolvimento do codec Opus, criado pela organiza\u00e7\u00e3o Xiph.Org. Como implementa\u00e7\u00e3o de refer\u00eancia do codificador e decodificador OAC sob licen\u00e7a BSD, a biblioteca liboac foi proposta, baseada no c\u00f3digo da biblioteca libopus.    <\/p>\n<p>A principal finalidade do OAC \u00e9 a transmiss\u00e3o de fala e som pela internet. O codec \u00e9 adequado para v\u00e1rias aplica\u00e7\u00f5es relacionadas \u00e0 transmiss\u00e3o interativa de \u00e1udio e pode ser utilizado em diversas \u00e1reas, desde telefonia VoIP e videoconfer\u00eancias at\u00e9 chats de jogos e realiza\u00e7\u00e3o remota de concertos. OAC \u00e9 escal\u00e1vel tanto para compress\u00e3o de \u00e1udio em streaming com alta taxa de bits, como para a transmiss\u00e3o de m\u00fasica est\u00e9reo de qualidade, quanto para compress\u00e3o de voz em canais de comunica\u00e7\u00e3o com largura de banda limitada.       <\/p>\n<p>O desenvolvimento ainda est\u00e1 em uma fase alfa inicial. O bitstream gerado pela biblioteca liboac, nesta etapa de desenvolvimento, n\u00e3o deve ser utilizado para distribui\u00e7\u00e3o de arquivos OAC, pois inclui dados de depura\u00e7\u00e3o adicionais e n\u00e3o suporta mudan\u00e7a de posi\u00e7\u00e3o no fluxo (seeking).      <\/p>\n<p>Exceto pela aus\u00eancia de men\u00e7\u00e3o \u00e0 ajustes din\u00e2micos de taxa de bits, faixa de frequ\u00eancias sonoras e tamanho de quadros, a lista de funcionalidades do OAC repete a descri\u00e7\u00e3o do codec Opus 1.5:    <\/p>\n<ul>\n<li class=\"l\">Taxa de bits de 6 Kbits\/s a 510 Kbits\/s;  <\/li>\n<li class=\"l\">Taxa de amostragem de 8 a 48KHz;  <\/li>\n<li class=\"l\">Dura\u00e7\u00e3o dos quadros de 2,5 a 60 milissegundos;  <\/li>\n<li class=\"l\">Suporte a taxas de bits constantes (CBR) e vari\u00e1veis (VBR);  <\/li>\n<li class=\"l\"> Suporte a at\u00e9 255 canais;\n<li class=\"l\">Suporte para \u00e1udio de banda estreita e larga;  <\/li>\n<li class=\"l\">Suporte para voz e m\u00fasica;  <\/li>\n<li class=\"l\">Suporte para est\u00e9reo e mono;  <\/li>\n<li class=\"l\">Capacidade de recupera\u00e7\u00e3o do fluxo de \u00e1udio em caso de perda de quadros (PLC);    <\/li>\n<li class=\"l\">Disponibilidade de implementa\u00e7\u00f5es utilizando aritm\u00e9tica de ponto fixo e ponto flutuante.  <\/li>\n<\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64852\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0410\u043b\u044c\u044f\u043d\u0441 Open Media (AOMedia), \u043a\u0443\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1\/AV2, \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043e\u0431\u044a\u0451\u043c\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u0430 IAMF \u0438 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 AVIF, \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b \u043a \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0434\u0435\u043a\u0430 Open Audio Codec (OAC), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0435\u043f\u043e\u0434\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a\u0430\u043a \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u0435 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u044f \u043a\u043e\u0434\u0435\u043a\u0430 Opus, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u043e\u0433\u043e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0435\u0439 Xiph.Org. \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \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 OAC \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 liboac, \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u0430\u044f \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0434\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-162582","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0410\u043b\u044c\u044f\u043d\u0441 Open Media (AOMedia), \u043a\u0443\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e AV1\/AV2, \u0444\u043e\u0440\u043c\u0430\u0442\u0430 \u043e\u0431\u044a\u0451\u043c\u043d\u043e\u0433\u043e \u0437\u0432\u0443\u043a\u0430 IAMF \u0438 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