{"id":1543,"date":"2018-08-31T12:00:34","date_gmt":"2018-08-31T11:00:34","guid":{"rendered":"http:\/\/news.avantools.pt\/?p=1543"},"modified":"2018-09-21T11:58:00","modified_gmt":"2018-09-21T10:58:00","slug":"broadcast-de-audio-digital-na-era-das-ti","status":"publish","type":"post","link":"https:\/\/news.avantools.pt\/?p=1543","title":{"rendered":"Broadcast de \u00e1udio digital"},"content":{"rendered":"<p>Em video e televis\u00e3o, o \u00e1udio \u00e9, sem d\u00favida, o aspecto mais complexo e problem\u00e1tico. Na r\u00e1dio \u00e9 o \u00fanico factor de preocupa\u00e7\u00e3o. O \u00f3rg\u00e3o de audi\u00e7\u00e3o \u00e9 extremamente sens\u00edvel a anomalias e a sua probabilidade de ocorr\u00eancia\u00a0 \u00e9 alta. Para que os operacionais do <em>broadcast<\/em> possam progredir, ter\u00e3o de perceber o que s\u00e3o frequ\u00eancias de amostragem, quais s\u00e3o os formatos do sinal \u00e1udio e outros factores, para poderem perceber o que est\u00e1 em jogo no <em>broadcast<\/em> de \u00e1udio. Na <strong>AVANTOOLS<\/strong> podemos ajud\u00e1-lo a encontrar a melhor solu\u00e7\u00e3o, em equipamentos e forma\u00e7\u00e3o, para os seus problemas de transmiss\u00e3o de sinal digital.<\/p>\n<figure id=\"attachment_1544\" aria-describedby=\"caption-attachment-1544\" style=\"width: 560px\" class=\"wp-caption aligncenter\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"wp-image-1544\" src=\"https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2018\/08\/BroadcastForIT-Hero_789_304_s.png?resize=525%2C203&#038;ssl=1\" alt=\"\" width=\"525\" height=\"203\" srcset=\"https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2018\/08\/BroadcastForIT-Hero_789_304_s.png?resize=300%2C116&amp;ssl=1 300w, https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2018\/08\/BroadcastForIT-Hero_789_304_s.png?resize=768%2C296&amp;ssl=1 768w, https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2018\/08\/BroadcastForIT-Hero_789_304_s.png?w=789&amp;ssl=1 789w\" sizes=\"auto, (max-width: 525px) 100vw, 525px\" \/><figcaption id=\"caption-attachment-1544\" class=\"wp-caption-text\">Imagem: The Broadcast Bridge<\/figcaption><\/figure>\n<p>O ru\u00eddo, a distors\u00e3o e a interfer\u00eancia s\u00e3o os inimigos de qualquer sistema de \u00e1udio. O digital afasta, em grande medida, estes problemas e da\u00ed a sua adop\u00e7\u00e3o entusi\u00e1stica pelo mundo da produ\u00e7\u00e3o musical, por exemplo.<\/p>\n<p>Entra a transmiss\u00e3o do sinal e o caso complica-se. A sua adop\u00e7\u00e3o provou-se mais lenta e problem\u00e1tica. Os sistemas actualmente adoptados para a transmiss\u00e3o de sinal \u00e1udio usados pela ind\u00fastria s\u00e3o o AES3 (Audio Engineering Society), o MADI (Multichannel Audio Digital Interface). Um terceiro m\u00e9todo usa SDI (Serial Digital Interface). Neste m\u00e9todo o sinal \u00e1udio \u00e9 embebido no VANC (Vertical Ancillary Data) do SDI.<\/p>\n<p>Todos este m\u00e9todos trazem enormes vantagens \u00e0 produ\u00e7\u00e3o, mas geram alguns problemas.<\/p>\n<p>Para compreender esta e outras quest\u00f5es relacionadas com a transmiss\u00e3o de sinal \u00e1udio em broadcast, <a href=\"https:\/\/www.thebroadcastbridge.com\/content\/entry\/11502\/broadcast-for-it-part-15-digital-audio\/?cat_id=3#\">recomendamos-lhe vivamente a leitura desta s\u00e9rie de artigos<\/a> de The Broadcast Bridge.<\/p>\n<p><a href=\"http:\/\/avantools.pt\/contacts.html\">Venha falar connosco<\/a>,\u00a0 Na <strong>AVANTOOLS<\/strong> estudaremos consigo os seus problemas de transmiss\u00e3o de sinal e encontraremos as solu\u00e7\u00f5es mais adequadas para si.<\/p>\n<p style=\"text-align: right;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-392 size-thumbnail\" src=\"https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2014\/03\/avanToolsCubeLogo.png?resize=150%2C150&#038;ssl=1\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2014\/03\/avanToolsCubeLogo.png?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2014\/03\/avanToolsCubeLogo.png?resize=100%2C100&amp;ssl=1 100w, https:\/\/i0.wp.com\/news.avantools.pt\/wp-content\/uploads\/2014\/03\/avanToolsCubeLogo.png?w=280&amp;ssl=1 280w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Em video e televis\u00e3o, o \u00e1udio \u00e9, sem d\u00favida, o aspecto mais complexo e problem\u00e1tico. Na r\u00e1dio \u00e9 o \u00fanico factor de preocupa\u00e7\u00e3o. O \u00f3rg\u00e3o de audi\u00e7\u00e3o \u00e9 extremamente sens\u00edvel a anomalias e a sua probabilidade de ocorr\u00eancia\u00a0 \u00e9 alta. Para que os operacionais do broadcast possam progredir, ter\u00e3o de perceber o que s\u00e3o frequ\u00eancias &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/news.avantools.pt\/?p=1543\" class=\"more-link\">Continuar a ler <span class=\"screen-reader-text\">&#8220;Broadcast de \u00e1udio digital&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[92],"tags":[19,195,36],"class_list":["post-1543","post","type-post","status-publish","format-standard","hentry","category-broadcast","tag-aoip","tag-audio","tag-broadcast"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/news.avantools.pt\/index.php?rest_route=\/wp\/v2\/posts\/1543","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/news.avantools.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.avantools.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.avantools.pt\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/news.avantools.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1543"}],"version-history":[{"count":14,"href":"https:\/\/news.avantools.pt\/index.php?rest_route=\/wp\/v2\/posts\/1543\/revisions"}],"predecessor-version":[{"id":1568,"href":"https:\/\/news.avantools.pt\/index.php?rest_route=\/wp\/v2\/posts\/1543\/revisions\/1568"}],"wp:attachment":[{"href":"https:\/\/news.avantools.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.avantools.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.avantools.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}