{"id":3216,"date":"2011-02-11T13:17:04","date_gmt":"2011-02-11T18:17:04","guid":{"rendered":"http:\/\/www.tedpublications.com\/fr\/?p=3216"},"modified":"2011-02-11T13:17:04","modified_gmt":"2011-02-11T18:17:04","slug":"bande-passante-audio","status":"publish","type":"post","link":"https:\/\/www.tedpublications.com\/fr\/bande-passante-audio\/","title":{"rendered":"<!--:fr-->Bande passante audio<!--:-->"},"content":{"rendered":"<p><!--:fr--><a name=\"Bande passante audio\"> <span style=\"color: #800000;\"><strong><\/strong><\/span><span style=\"color: #800000;\"><strong>Bande passante audio:<\/strong><\/span> D\u00e9termine la plage de fr\u00e9quence reproduite par un appareil audio.  Celle-ci doit \u00eatre au moins \u00e9gale \u00e0 celle de la sensibilit\u00e9 de l\u2019oreille  humaine dont il est commun\u00e9ment admis qu&rsquo;elle s&rsquo;\u00e9tend 20 Hz \u00e0 20 kHz  (chez l&rsquo;enfant en tout cas !). En fait, la perception des fr\u00e9quences  sonores (variations rapides du niveau de pression acoustique) int\u00e8gre  \u00e9galement la r\u00e9action du squelette humain aux tr\u00e8s basses fr\u00e9quences (en  de\u00e7a de quelques dizaines de Hertz) et probablement celle de l&rsquo;oreille  aux fr\u00e9quences m\u00eame sup\u00e9rieures \u00e0 la limit\u00e9 acad\u00e9mique de 20 kHz, pour  les ph\u00e9nom\u00e8nes dits <strong><em>transitoires<\/em><\/strong> (attaques des notes, bruits percussifs, claquements). Un des reproches  faits au standard CD, a priori satisfaisant sur le papier, est de ne  pouvoir retranscrire ce qui se passe au del\u00e0 de 20 kHz &#8230; D&rsquo;o\u00f9 les  standards <em><strong>haute r\u00e9solution<\/strong><\/em> faisant appel \u00e0 des <\/a><a href=\"http:\/\/www.evmag.fr\/site.php?page=glossaire#Fr%C3%A9quence%20d%27%C3%A9chantillonnage\">fr\u00e9quences d&rsquo;\u00e9chantillonnage<\/a> de 96 ou 192 kHz.<!--:--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bande passante audio: D\u00e9termine la plage de fr\u00e9quence reproduite par un appareil audio. Celle-ci doit \u00eatre au moins \u00e9gale \u00e0 celle de la sensibilit\u00e9 de l\u2019oreille humaine dont il est commun\u00e9ment admis qu&rsquo;elle s&rsquo;\u00e9tend 20 Hz \u00e0 20 kHz (chez l&rsquo;enfant en tout cas !). En fait, la perception des fr\u00e9quences sonores (variations rapides du [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[],"class_list":["post-3216","post","type-post","status-publish","format-standard","hentry","category-reference","entry"],"_links":{"self":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/posts\/3216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/comments?post=3216"}],"version-history":[{"count":0,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/posts\/3216\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/media?parent=3216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/categories?post=3216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/tags?post=3216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}