{"id":2388,"date":"2019-05-02T08:18:03","date_gmt":"2019-05-02T06:18:03","guid":{"rendered":"http:\/\/sophie-matthieu.eu\/?p=2388"},"modified":"2020-01-17T12:29:26","modified_gmt":"2020-01-17T11:29:26","slug":"technologiesevents-radio-numerique-terrestre-dab-dab","status":"publish","type":"post","link":"https:\/\/sophie-matthieu.eu\/index.php\/2019\/05\/02\/technologiesevents-radio-numerique-terrestre-dab-dab\/","title":{"rendered":"#TechnologiesEVENTS \u2013 Radio Num\u00e9rique Terrestre : DAB\/DAB+"},"content":{"rendered":"\n<p>Une nouvelle aventure \u00e9lectronique. Bienvenue dans le monde du DAB\/DAB+ (Digital Audio Broadcasting). A Paris cette norme de diffusion a commenc\u00e9 en 2014.  Fin 2018 on arrive a 20% de la couverture de la France m\u00e9tropolitaine, on commence a obliger les constructeurs d \u00e9quipements audio d\u2019int\u00e9grer un r\u00e9cepteur DAB\/RNT avec la FM \ud83d\ude00<\/p>\n\n\n\n<p>Le DAB est diffus\u00e9s sur 2 Bandes : la <strong><em>Bande VHF III (174 <\/em><\/strong><abbr title=\"m\u00e9gahertz\"><strong><em>MHz<\/em><\/strong><\/abbr><strong><em>&nbsp;\u00e0 223&nbsp;<\/em><\/strong><abbr title=\"m\u00e9gahertz\"><strong><em>MHz<\/em><\/strong><\/abbr><strong><em>)<\/em><\/strong> et la <strong><em>Bande L (1,452 <\/em><\/strong><abbr title=\"gigahertz\"><strong><em>GHz<\/em><\/strong><\/abbr><strong><em>&nbsp;\u00e0 1,492&nbsp;<\/em><\/strong><abbr title=\"gigahertz\"><strong><em>GHz<\/em><\/strong><\/abbr><strong><em>)<\/em><\/strong> . Le codec utilis\u00e9 pour la Diffusion du DAB\/DAB+ est le  <strong><em> MPEG-4 High Efficiency AAC v2 profile (HE-AAC v2)<\/em><\/strong><\/p>\n\n\n\n<p>On va r\u00e9aliser ce petit projet de r\u00e9ception DAB+ avec un \u00ab\u00a0SDR\u00a0\u00bbmaison \u00e9quip\u00e9 seulement de la fonction r\u00e9cepteur (Rx) et non pas d \u00e9metteur (Tx) comme le HackRF One par exemple. Ce petit r\u00e9cepteur est a la base une clef <em><strong>TNT (DVB-T\/DAB\/FM)<\/strong><\/em>. Cette clef est \u00e9quip\u00e9 d un <em>chipset RTL2838UHIDIR<\/em> et non pas du Tuner <strong>\u00ab\u00a0E4000\u00a0\u00bb<\/strong> Habituel mais un <strong>\u00ab\u00a0Rafael Micro R820T\u00a0\u00bb<\/strong> permettant de r\u00e9aliser un r\u00e9cepteur large bande tous modes de <strong><em>100Khz \u00e0 1.7Ghz<\/em><\/strong> sans trou de Fr\u00e9quences&#8230; <\/p>\n\n\n\n<p>On peut s amuser a recevoir le DAB+  sur la bande VHF III (174 <abbr title=\"m\u00e9gahertz\">MHz<\/abbr>&nbsp;\u00e0 223&nbsp;<abbr title=\"m\u00e9gahertz\">MHz<\/abbr>) et\/ou la Bande L (1,452 <abbr title=\"gigahertz\">GHz<\/abbr>&nbsp;\u00e0 1,492&nbsp;<abbr title=\"gigahertz\">GHz<\/abbr>)  sans trop de soucis.<\/p>\n\n\n\n<div class=\"gmedia_gallery amron_module is_bot\" id=\"GmediaGallery_56\" data-gmid=\"56\" data-module=\"amron\"><script type=\"text\/javascript\">\n\t(function() {\n\t\tthis['GmediaGallery_56'] = {\n\t\t\t'settings':{\"collectionThumbRecomendedWidth\":\"260\",\"collectionPreloaderColor\":\"333333\",\"linkTargetWindow\":\"_blank\",\"thumbSpacing\":\"10\",\"tagsFilter\":\"1\",\"tagCloudAll\":\"All\",\"tagCloudTextColor\":\"rgba(0, 0, 0, 1)\",\"tagCloudTextColorOver\":\"rgba(255,255, 255, 1)\",\"tagCloudBgColor\":\"rgba(211, 211, 211, 1)\",\"tagCloudBgColorOver\":\"rgba(11, 11, 11, 1)\",\"collectionThumbHoverColor\":\"rgba(0, 0, 0, .7)\",\"collectionThumbContentBGColor\":\"rgba(245,245,245,1)\",\"collectionThumbTitleShow\":\"1\",\"collectionThumbTitleColor\":\"rgba(0,0,0,1)\",\"collectionThumbFontSize\":\"18\",\"collectionThumbDescriptionShow\":\"1\",\"collectionThumbDescriptionColor\":\"rgba(0,0,0,1)\",\"collectionThumbDescriptionFontSize\":\"15\",\"collectionReadMoreButtonLabel\":\"Read More\",\"collectionReadMoreButtonLabelColor\":\"rgba(255, 255, 255, 1)\",\"collectionReadMoreButtonBGColor\":\"rgba(0, 0, 0, 1)\",\"collectionReadMoreButtonLabelColorHover\":\"rgba(0, 0, 0, 1)\",\"collectionReadMoreButtonBGColorHover\":\"rgba(235,235,235,1)\",\"modaBgColor\":\"rgba(0,0,0,0.9)\",\"modalInfoBoxBgColor\":\"rgba(255,255,255,1)\",\"modalInfoBoxTitleTextColor\":\"000000\",\"modalInfoBoxTextColor\":\"333333\",\"infoBarCountersEnable\":\"1\",\"infoBarDateInfoEnable\":\"1\",\"lightBoxEnable\":\"1\",\"sliderPreloaderColor\":\"ffffff\",\"sliderBgColor\":\"rgba(0,0,0,0.8)\",\"sliderHeaderFooterBgColor\":\"000000\",\"sliderNavigationColor\":\"rgba(0,0,0,1)\",\"sliderNavigationIconColor\":\"rgba(255,255,255,1)\",\"sliderNavigationColorOver\":\"rgba(255,255,255,1)\",\"sliderNavigationIconColorOver\":\"rgba(0,0,0,1)\",\"sliderItemTitleFontSize\":\"24\",\"sliderItemTitleTextColor\":\"ffffff\",\"sliderThumbBarEnable\":\"0\",\"sliderThumbBarHoverColor\":\"ffffff\",\"sliderThumbSubMenuBackgroundColor\":\"rgba(0,0,0,1)\",\"sliderThumbSubMenuBackgroundColorOver\":\"rgba(255,255,255,1)\",\"sliderThumbSubMenuIconColor\":\"rgba(255,255,255,1)\",\"sliderThumbSubMenuIconHoverColor\":\"rgba(0,0,0,1)\",\"sliderInfoEnable\":\"1\",\"sliderItemDownload\":\"1\",\"sliderItemDiscuss\":\"1\",\"sliderSocialShareEnabled\":\"1\",\"sliderLikesEnabled\":\"1\",\"customCSS\":\"\",\"module_url\":\"https:\\\/\\\/sophie-matthieu.eu\\\/wp-content\\\/plugins\\\/grand-media\\\/module\\\/amron\",\"license\":\"\",\"post_url\":\"https:\\\/\\\/sophie-matthieu.eu\\\/wp-json\\\/wp\\\/v2\\\/posts\\\/2388\"},\n\t\t\t'appQuery':{\"gmedia__in\":\"562,563,564,565,566\",\"order\":\"ASC\",\"orderby\":\"gmedia__in\",\"status\":[\"publish\"],\"limit\":100},\n\t\t\t'appApi':\"https:\\\/\\\/sophie-matthieu.eu\\\/?gmedia-app=1&gmappversion=4&gmmodule=1\",\n\t\t\t'appInfo':{\"name\":\"DAB_Gallery\",\"description\":\"\"}};\n\t})();\n<\/script>\n<\/div>\n\n\n\n<p>Le plus simple est de prendre une machine sous Ubuntu, la mienne est \u00e9quip\u00e9e de Ubuntu 19. ensuite on installe GNURadio qui va installer tous les drivers qu on a besoin pour contr\u00f4ler le SDR en USB. ensuite on r\u00e9cup\u00e8re le \u00ab\u00a0Welle.io App image\u00a0\u00bb qui permet de d\u00e9coder le flux de la RNT&#8230;<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une nouvelle aventure \u00e9lectronique. Bienvenue dans le monde du DAB\/DAB+ (Digital Audio Broadcasting). A Paris cette norme de diffusion a commenc\u00e9 en 2014. Fin 2018 on arrive a 20% de la couverture de la France m\u00e9tropolitaine, on commence a obliger les constructeurs d \u00e9quipements audio &hellip; <a href=\"https:\/\/sophie-matthieu.eu\/index.php\/2019\/05\/02\/technologiesevents-radio-numerique-terrestre-dab-dab\/\" class=\"more-link\"><span>Continue reading<span class=\"screen-reader-text\">#TechnologiesEVENTS \u2013 Radio Num\u00e9rique Terrestre : DAB\/DAB+<\/span><\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3180,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8,14],"tags":[],"_links":{"self":[{"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/posts\/2388"}],"collection":[{"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/comments?post=2388"}],"version-history":[{"count":8,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/posts\/2388\/revisions"}],"predecessor-version":[{"id":2615,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/posts\/2388\/revisions\/2615"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/media\/3180"}],"wp:attachment":[{"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/media?parent=2388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/categories?post=2388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sophie-matthieu.eu\/index.php\/wp-json\/wp\/v2\/tags?post=2388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}