{"id":1422,"date":"2013-03-18T14:13:49","date_gmt":"2013-03-18T13:13:49","guid":{"rendered":"http:\/\/www.multimedialab.be\/blog\/?p=1422"},"modified":"2013-03-21T12:27:14","modified_gmt":"2013-03-21T11:27:14","slug":"generer-une-onde-sinusoide-avec-audacity","status":"publish","type":"post","link":"http:\/\/www.multimedialab.be\/blog\/?p=1422","title":{"rendered":"G\u00c3\u00a9n\u00c3\u00a9rer une onde sinuso\u00c3\u00afdale avec Audacity"},"content":{"rendered":"<p>Une utilisation simple mais inhabituelle du logiciel libre Audacity.<\/p>\n<p><img decoding=\"async\" id=\"image2645\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2013\/03\/audacity_index.jpg\" alt=\"Audacity\" \/><\/p>\n<p><!--more--><\/p>\n<p>Vous voulez tester ceci, ou tout autre application n\u00c3\u00a9cessitant une onde sp\u00c3\u00a9cifique :<\/p>\n<p><iframe loading=\"lazy\" src=\"http:\/\/player.vimeo.com\/video\/5910576?title=0&amp;byline=0&amp;portrait=0\" width=\"482\" height=\"271\" frameborder=\"0\" webkitAllowFullScreen mozallowfullscreen allowFullScreen><\/iframe><\/p>\n<p><a href=\"http:\/\/vimeo.com\/5910576\" target=\"_blank\">Collin&rsquo;s Lab Notes: DIY Cymatics<\/a> from <a href=\"http:\/\/vimeo.com\/make\" target=\"_blank\">MAKE magazine<\/a> on <a href=\"http:\/\/vimeo.com\" target=\"_blank\">Vimeo<\/a>.<\/p>\n<p><em>Mat\u00c3\u00a9riel n\u00c3\u00a9cessaire : 1 baffle subwoofer, 2 volumes de f\u00c3\u00a9cule de ma\u00c3\u00afs (Ma\u00c3\u00afzena) pour un volume d&rsquo;eau, programme Audacity (sinewave 125 Hz).<br \/>\nVoir plus en d\u00c3\u00a9tail : <a href=\"http:\/\/www.multimedialab.be\/blog\/?p=1190\" target=\"_blank\">http:\/\/www.multimedialab.be\/blog\/?p=1190<\/a><\/em><\/p>\n<p><strong>AUDACITY !<\/strong><\/p>\n<p>Il existe bon nombre de r\u00c3\u00a9f\u00c3\u00a9rences en ligne concernant des logiciels capables de g\u00c3\u00a9n\u00c3\u00a9rer des fr\u00c3\u00a9quences d&rsquo;ondes. La plupart sont des versions de d\u00c3\u00a9monstrations de logiciels payants, etc.<br \/>\nLa meilleure solution reste selon moi l&rsquo;utilisation du logiciel libre et tr\u00c3\u00a8s performant <a href=\"http:\/\/audacity.sourceforge.net\/?lang=fr\" target=\"_blank\">Audacity<\/a>, destin\u00c3\u00a9 \u00c3\u00a0 l&rsquo;\u00c3\u00a9dition et \u00c3\u00a0 la manipulation de donn\u00c3\u00a9es audio num\u00c3\u00a9riques.<\/p>\n<p>Les utilisations de <a href=\"http:\/\/audacity.sourceforge.net\/?lang=fr\" target=\"_blank\">Audacity<\/a> sont vari\u00c3\u00a9es. Dans ce cas pr\u00c3\u00a9cis, il va nous servir pour g\u00c3\u00a9n\u00c3\u00a9rer diff\u00c3\u00a9rentes fr\u00c3\u00a9quences d&rsquo;ondes sous forme de fichiers audio. Simple.<\/p>\n<p><strong>01. Ouvrir le g\u00c3\u00a9n\u00c3\u00a9rateur de son.<\/strong><\/p>\n<p><img decoding=\"async\" id=\"image2646\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2013\/03\/audacity_sine_wave_01.gif\" alt=\"Audacity\" \/><\/p>\n<p>Barre de navigation > G\u00c3\u00a9n\u00c3\u00a9rer > Son.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p><strong>02. G\u00c3\u00a9n\u00c3\u00a9rer la sinuso\u00c3\u00afde.<\/strong><\/p>\n<p><img decoding=\"async\" id=\"image2647\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2013\/03\/audacity_sine_wave_02.gif\" alt=\"Audacity\" \/><\/p>\n<p>Une fen\u00c3\u00aatre s&rsquo;ouvre : s\u00c3\u00a9lectionner &lsquo;Sinuso\u00c3\u00afde&rsquo;.<br \/>\nFr\u00c3\u00a9quence : choisir une fr\u00c3\u00a9quence en Hz.<br \/>\nAmplitude : l&rsquo;amplitude \u00c3\u00a9gale ici le volume. La valeur &lsquo;1&rsquo; \u00c3\u00a9gale l&rsquo;amplitude maximum. Essayez la valeur &lsquo;0.8&rsquo;.<br \/>\nDur\u00c3\u00a9e : \u00c3\u00a0 vous de voir&#8230;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p><strong>03. Ecouter la sinuso\u00c3\u00afde.<\/strong><\/p>\n<p><img decoding=\"async\" id=\"image2648\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2013\/03\/audacity_sine_wave_03.gif\" alt=\"Audacity\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p><strong>04. Sauver.<\/strong><\/p>\n<p><img decoding=\"async\" id=\"image2649\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2013\/03\/audacity_sine_wave_04.gif\" alt=\"Audacity\" \/><\/p>\n<p>Une fois la sinuso\u00c3\u00afde g\u00c3\u00a9n\u00c3\u00a9r\u00c3\u00a9e, il faut la sauver.<br \/>\nBarre de navigation > Fichier > Exporter.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p><strong>05. Choisir le format.<\/strong><\/p>\n<p><img decoding=\"async\" id=\"image2650\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2013\/03\/audacity_sine_wave_05.gif\" alt=\"Audacity\" \/><\/p>\n<p>Avec Mac OSX, utilisons AIFF ou WAV.<br \/>\nAvec Windows, choisissons WAV.<br \/>\nInutile de compresser en mp3, gardons la puret\u00c3\u00a9 de la sinuso\u00c3\u00aede.<br \/>\nNommer le fichier de mani\u00c3\u00a8re explicite, par exemple : sin_30Hz.aiff<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p>Et voil\u00c3\u00a0 !<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p><strong>Liens.<\/strong><\/p>\n<p>Audacity : T\u00c3\u00a9l\u00c3\u00a9charger Audacity :<br \/>\n<a href=\"http:\/\/audacity.sourceforge.net\/?lang=fr\" target=\"_blank\">http:\/\/audacity.sourceforge.net\/?lang=fr<\/a><\/p>\n<p>Audacity : Information g\u00c3\u00a9n\u00c3\u00a9rales sur wikipedia :<br \/>\n<a href=\"http:\/\/audacity.sourceforge.net\/about\/?lang=fr\" target=\"_blank\">http:\/\/audacity.sourceforge.net\/about\/?lang=fr<\/a><br \/>\n<a href=\"http:\/\/fr.wikipedia.org\/wiki\/Audacity\" target=\"_blank\">http:\/\/fr.wikipedia.org\/wiki\/Audacity<\/a><br \/>\n<a href=\"http:\/\/en.wikipedia.org\/wiki\/Audacity_%28audio_editor%29\" target=\"_blank\">http:\/\/en.wikipedia.org\/wiki\/Audacity_%28audio_editor%29<\/a><\/p>\n<p>Audacity : Informations en fran\u00c3\u00a7ais :<br \/>\n<a href=\"http:\/\/wiki.audacityteam.org\/index.php?title=French_Information\" target=\"_blank\">http:\/\/wiki.audacityteam.org\/index.php?title=French_Information<\/a><\/p>\n<p>Audacity : Informations en fran\u00c3\u00a7ais : Foire aux questions :<br \/>\n<a href=\"http:\/\/manual.audacityteam.org\/man\/FAQ\/fr\" target=\"_blank\">http:\/\/manual.audacityteam.org\/man\/FAQ\/fr<\/a><\/p>\n<p>Audacity sur Flossmanuals :<br \/>\n<a href=\"http:\/\/fr.flossmanuals.net\/audacity\/\" target=\"_blank\">http:\/\/fr.flossmanuals.net\/audacity\/<\/a><\/p>\n<p>Audacity : Autres ressources pour l&rsquo;apprentissage d&rsquo;Audacity :<br \/>\nAudacity &#8211; modifier une piste audio : <a href=\"https:\/\/vimeo.com\/54380274\" target=\"_blank\">https:\/\/vimeo.com\/54380274<\/a><br \/>\nTutoriels Audacity : <a href=\"http:\/\/www.tutoriels-animes.com\/tutoriels-audacity.html\" target=\"_blank\">http:\/\/www.tutoriels-animes.com\/tutoriels-audacity.html<\/a><br \/>\n60 tutoriels Audacity en fran\u00c3\u00a7ais  : <a href=\"http:\/\/leblogaj.over-blog.com\/article-34307343.htm\" target=\"_blank\">http:\/\/leblogaj.over-blog.com\/article-34307343.htm<\/a>l<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"image2451\" src=\"http:\/\/www.multimedialab.be\/blog\/wp-content\/uploads\/2012\/09\/pixel_gris.gif\" alt=\"Grey line\" width=\"482\" height=\"1\" \/><\/p>\n<p>Autres ressources wikipedia concernant le son :<\/p>\n<p>Signal sinuso\u00c3\u00afdal :<br \/>\n<a href=\"http:\/\/fr.wikipedia.org\/wiki\/Signal_sinuso%C3%AFdal\" target=\"_blank\">http:\/\/fr.wikipedia.org\/wiki\/Signal_sinuso%C3%AFdal<\/a><\/p>\n<p>Liste de logiciels libres audio :<br \/>\n<a href=\"http:\/\/en.wikipedia.org\/wiki\/List_of_free_software_for_audio\" target=\"_blank\">http:\/\/en.wikipedia.org\/wiki\/List_of_free_software_for_audio<\/a><\/p>\n<p><a href=\"http:\/\/fr.wikipedia.org\/wiki\/Son_%28physique%29\" target=\"_blank\">http:\/\/fr.wikipedia.org\/wiki\/Son_%28physique%29<\/a><br \/>\n<a href=\"http:\/\/fr.wikipedia.org\/wiki\/Son_num%C3%A9rique_%28musique%29\" target=\"_blank\">http:\/\/fr.wikipedia.org\/wiki\/Son_num%C3%A9rique_%28musique%29<\/a><br \/>\n<a href=\"http:\/\/fr.wikipedia.org\/wiki\/Ordre_de_grandeur_%28fr%C3%A9quence%29\" target=\"_blank\">http:\/\/fr.wikipedia.org\/wiki\/Ordre_de_grandeur_%28fr%C3%A9quence%29<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une utilisation simple mais inhabituelle du logiciel libre Audacity.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55,35,46,18],"tags":[],"class_list":["post-1422","post","type-post","status-publish","format-standard","hentry","category-erg-arts-numeriques","category-logiciels-libres","category-open-courseopen-source","category-son"],"_links":{"self":[{"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1422","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1422"}],"version-history":[{"count":0,"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1422\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1422"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.multimedialab.be\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}