{"id":295,"date":"2021-06-06T11:57:36","date_gmt":"2021-06-06T09:57:36","guid":{"rendered":"https:\/\/pgraber.org\/blog\/?p=295"},"modified":"2021-06-06T12:17:39","modified_gmt":"2021-06-06T10:17:39","slug":"numeriser-les-k7-audio","status":"publish","type":"post","link":"https:\/\/pgraber.org\/blog\/numeriser-les-k7-audio\/","title":{"rendered":"Num\u00e9riser les K7 audio&#8230;"},"content":{"rendered":"\n<p>Il y a quelques dizaines d&rsquo;ann\u00e9es, j&rsquo;\u00e9coutais la radio \u00e0 longueur de journ\u00e9e (ou ce qui en restait apr\u00e8s mes occupations&#8230;). Parfois, j&rsquo;enregistrais les \u00e9missions sur mon Revox B77 ou sur une platine \u00e0 cassette (K7, \u00e7a ne marche qu&rsquo;en fran\u00e7ais !). Pour certaines choses, j&rsquo;ai aussi b\u00e9n\u00e9fici\u00e9 \u00e0 l&rsquo;occasion des pr\u00e9cieux services d&rsquo;une de mes s\u0153urs !<\/p>\n\n\n\n<p>La num\u00e9risation qui s&rsquo;est impos\u00e9e depuis m&rsquo;a fait renoncer \u00e0 mes anciens outils et j&rsquo;ai ainsi conserv\u00e9 des supports dont je n&rsquo;\u00e9tais plus \u00e0 m\u00eame de profiter du contenu.<\/p>\n\n\n\n<p>Occup\u00e9 \u00e0 faire de la place \u00e0 la cave, je suis ainsi tomb\u00e9 sur des dizaines de K7 pouvant receler des enregistrements int\u00e9ressants, si ce n&rsquo;est indispensables !<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_-1024x683.jpg\" alt=\"\" class=\"wp-image-296\" srcset=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_-1024x683.jpg 1024w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_-300x200.jpg 300w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_-768x512.jpg 768w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_.jpg 1350w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption><em>exemple d&rsquo;un de ces supports (pour les nouvelles g\u00e9n\u00e9rations)<\/em><\/figcaption><\/figure>\n\n\n\n<!--more-->\n\n\n\n<p>J&rsquo;avais heureusement eu la bonne id\u00e9e de conserver ma derni\u00e8re platine \u00e0 K7 (Pioneer CT-W205R).<\/p>\n\n\n\n<p>Comme elle n&rsquo;a pas de sortie \u00c9couteurs ni Jack, j&rsquo;ai acquis un c\u00e2ble Cinch-Jack que j&rsquo;ai connect\u00e9 \u00e0 l&rsquo;entr\u00e9e micro de mon ordinateur portable. MAIS le r\u00e9sultat hyper satur\u00e9 \u00e9tait inaudible !<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"289\" height=\"300\" src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/carte_audio_logitech.jpg\" alt=\"\" class=\"wp-image-297\"\/><figcaption><em>carte audio USB Logitech<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>J&rsquo;ai essay\u00e9 de passer par l&rsquo;interm\u00e9diaire d&rsquo;une carte audio USB Logitech, mais \u00e7a ne r\u00e9solvait pas le probl\u00e8me.<\/p>\n\n\n\n<p>Mais je n&rsquo;allais quand m\u00eame pas m&rsquo;avouer vaincu si facilement !<\/p>\n\n\n\n<p>J&rsquo;ai donc lanc\u00e9 des recherches sur Internet pour finir par trouver ce qui semblait une solution possible \u00e0 mon probl\u00e8me sans me ruiner pour autant \ud83d\ude09<\/p>\n\n\n\n<p>Aspect suppl\u00e9mentaire, il fallait \u00eatre attentif \u00e0 la compatibilit\u00e9 avec mon mat\u00e9riel informatique (int\u00e9gralement sous Linux, Ubuntu pour \u00eatre pr\u00e9cis).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ouf !<\/h2>\n\n\n\n<p>La solution \u00e9tait de passer par un convertisseur, ou plut\u00f4t par une carte audio avec connecteur USB convertissant le signal analogique en num\u00e9rique.<\/p>\n\n\n\n<p>S&rsquo;il fallait d\u00e9bourser pr\u00e8s d&rsquo;une centaine de francs sur les sites suisses (que j&rsquo;utilise presque exclusivement), j&rsquo;ai cependant trouv\u00e9 mon bonheur pour moins de 30 francs chez A* (pas besoin de publicit\u00e9 suppl\u00e9mentaire&#8230;).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/DriverGenius_USB_2.0-1024x576.jpg\" alt=\"\" class=\"wp-image-298\" srcset=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/DriverGenius_USB_2.0-1024x576.jpg 1024w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/DriverGenius_USB_2.0-300x169.jpg 300w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/DriverGenius_USB_2.0-768x432.jpg 768w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/DriverGenius_USB_2.0-1536x864.jpg 1536w, https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/DriverGenius_USB_2.0.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption><em>la carte et ses divers connecteurs<\/em><\/figcaption><\/figure>\n\n\n\n<p>Je ne vais pas d\u00e9crire le processus par le d\u00e9tail, mais c&rsquo;est assez simple :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Enregistrement par logiciel (dans mon cas : <a href=\"https:\/\/doc.ubuntu-fr.org\/audio-recorder\" target=\"_blank\" rel=\"noreferrer noopener\">Audio-Recorder<\/a> sous Ubuntu)<\/li><li>Traitement (d\u00e9coupe, filtrage du bruit, normalisation) avec <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Audacity\" target=\"_blank\" rel=\"noreferrer noopener\">Audacity<\/a><\/li><li>Export au format ogg ou opus (alternatives libres et performantes au MP3) dans Audacity.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Exemples de tr\u00e9sors restaur\u00e9s<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>R\u00e9veil matin<\/strong> par l&rsquo;animatrice <strong><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Kriss_(animatrice)\" target=\"_blank\" rel=\"noreferrer noopener\">Kriss<\/a><\/strong> (France Inter) : <\/li><\/ul>\n\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/kriss.mp3\"><\/audio><figcaption><em>R\u00e9veil matin par Kriss (MP3) &#8211; 2.3 Mo<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/kriss.ogg\"><\/audio><figcaption><em>R\u00e9veil matin par Kriss (MP3) &#8211; 1.6 Mo<\/em><\/figcaption><\/figure>\n\n\n\n<p>Le m\u00eame aux formats <strong><a href=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/kriss_a.opus\">opus<\/a><\/strong> qualit\u00e9 sup\u00e9rieure (1.4 Mo) \/ <strong><a href=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/kriss_b.opus\">opus<\/a><\/strong> qualit\u00e9 normale (0.7 Mo)<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>L&rsquo;ours<\/strong> en terres neuch\u00e2teloises par <strong><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Archibald_Quartier\" target=\"_blank\" rel=\"noreferrer noopener\">Archibald Quartier<\/a><\/strong> (RTN) :<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/08-les-ours.mp3\"><\/audio><figcaption><em>L&rsquo;ours par Archibald Quartier (MP3) &#8211; 8.1 Mo<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/08-les-ours.ogg\"><\/audio><figcaption><em>L&rsquo;ours par Archibald Quartier (ogg) &#8211; 6.2 Mo<\/em><\/figcaption><\/figure>\n\n\n\n<p>Le m\u00eame aux formats <strong><a href=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/08-les-ours_a.opus\">opus<\/a><\/strong> qualit\u00e9 sup\u00e9rieure (4.2 Mo) \/ <strong><a href=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/08-les-ours_b.opus\">opus<\/a><\/strong> qualit\u00e9 normale (2.1 Mo)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Un format de fichier audio prometteur&#8230;<\/h2>\n\n\n\n<p>L&rsquo;\u00e9coute des r\u00e9sultats de compression opus est assez <strong>\u00e9poustouflante<\/strong>. Une forte compression maintient la qualit\u00e9.<\/p>\n\n\n\n<p>Il faudra peut-\u00eatre y revenir, m\u00eame si la tendance va toujours davantage vers les formats sans compression (flac, par exemple).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il y a quelques dizaines d&rsquo;ann\u00e9es, j&rsquo;\u00e9coutais la radio \u00e0 longueur de journ\u00e9e (ou ce qui en restait apr\u00e8s mes occupations&#8230;). Parfois, j&rsquo;enregistrais les \u00e9missions sur mon Revox B77 ou sur une platine \u00e0 cassette (K7, \u00e7a ne marche qu&rsquo;en fran\u00e7ais !). Pour certaines choses, j&rsquo;ai aussi b\u00e9n\u00e9fici\u00e9 \u00e0 l&rsquo;occasion des pr\u00e9cieux services d&rsquo;une deLire la suite &rarr;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[18,2,16],"tags":[],"class_list":["post-295","post","type-post","status-publish","format-standard","hentry","category-audio","category-futilites","category-informatique","no-thumb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Num\u00e9riser les K7 audio... &#8211; Blog-notes<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pgraber.org\/blog\/numeriser-les-k7-audio\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Num\u00e9riser les K7 audio... &#8211; Blog-notes\" \/>\n<meta property=\"og:description\" content=\"Il y a quelques dizaines d&rsquo;ann\u00e9es, j&rsquo;\u00e9coutais la radio \u00e0 longueur de journ\u00e9e (ou ce qui en restait apr\u00e8s mes occupations&#8230;). Parfois, j&rsquo;enregistrais les \u00e9missions sur mon Revox B77 ou sur une platine \u00e0 cassette (K7, \u00e7a ne marche qu&rsquo;en fran\u00e7ais !). Pour certaines choses, j&rsquo;ai aussi b\u00e9n\u00e9fici\u00e9 \u00e0 l&rsquo;occasion des pr\u00e9cieux services d&rsquo;une deLire la suite &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pgraber.org\/blog\/numeriser-les-k7-audio\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog-notes\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/graberp\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/graberp\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-06T09:57:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-06-06T10:17:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pgraber.org\/blog\/wp-content\/uploads\/2021\/06\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_-1024x683.jpg\" \/>\n<meta name=\"author\" content=\"Pierre Graber\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pierre Graber\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/\"},\"author\":{\"name\":\"Pierre Graber\",\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/#\\\/schema\\\/person\\\/8e14accee473764711ea8a64bc9a754a\"},\"headline\":\"Num\u00e9riser les K7 audio&#8230;\",\"datePublished\":\"2021-06-06T09:57:36+00:00\",\"dateModified\":\"2021-06-06T10:17:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/\"},\"wordCount\":542,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/#\\\/schema\\\/person\\\/8e14accee473764711ea8a64bc9a754a\"},\"image\":{\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/06\\\/music-technology-musical-instrument-electronics-audio-sound-611077-pxhere.com_-1024x683.jpg\",\"articleSection\":[\"Audio\",\"Futilit\u00e9s\",\"Informatique\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/\",\"url\":\"https:\\\/\\\/pgraber.org\\\/blog\\\/numeriser-les-k7-audio\\\/\",\"name\":\"Num\u00e9riser les K7 audio... &#8211; 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