{"id":321,"date":"2024-06-08T15:36:29","date_gmt":"2024-06-08T13:36:29","guid":{"rendered":"https:\/\/math.univ-lyon1.fr\/perso\/?page_id=321"},"modified":"2024-09-13T11:32:09","modified_gmt":"2024-09-13T09:32:09","slug":"modulations","status":"publish","type":"page","link":"https:\/\/math.univ-lyon1.fr\/perso\/sylvie-benzoni-gavage\/modulations\/","title":{"rendered":"Modulations"},"content":{"rendered":"\n

Modulations d\u2019ondes<\/h2>\n\n\n\n
\n
Sylvie Benzoni-Gavage<\/a><\/div>\n<\/div>\n\n\n\n

Lorsque nous \u00e9coutions la radio sur un poste \u00ab\u00a0classique\u00a0\u00bb, nous avions le choix entre la radio AM<\/a> et la radio FM<\/a>. Ces sigles signifient respectivement \u00ab\u00a0amplitude modulation\u00a0\u00bb et \u00ab\u00a0frequency modulation\u00a0\u00bb pour les ondes radio. Visuellement ces deux types de modulation ressemblent aux sch\u00e9mas ci-dessous.<\/p>\n\n\n\n

\n
\"\"
Modulation d\u2019amplitude<\/figcaption><\/figure>\n\n\n\n
\"\"
Modulation de fr\u00e9quence<\/figcaption><\/figure>\n<\/div>\n\n\n\n

Vous trouverez un article de vulgarisation (un peu touffu quand m\u00eame) en anglais concernant les modulations d\u2019ondes en g\u00e9n\u00e9ral (pas n\u00e9cessairement des ondes radio) ici :<\/p>\n\n\n\n

Waves and their modulations<\/em><\/a><\/p>\n\n\n\n

NB<\/strong> Tout plein d\u2019ondes sont pr\u00e9sent\u00e9es en m\u00eame temps que leur spectre dans la<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

mus\u00e9e des math\u00e9matiques concoct\u00e9 par l\u2019Institut Henri Poincar\u00e9<\/a>, dans la partie intitul\u00e9e \u00ab Spectres et ondes \u00bb de l\u2019espace MOD\u00c9LISER<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Modulations d\u2019ondes Lorsque nous \u00e9coutions la radio sur un poste \u00ab\u00a0classique\u00a0\u00bb, nous avions le choix entre la radio AM et la radio FM. Ces sigles signifient respectivement \u00ab\u00a0amplitude modulation\u00a0\u00bb et \u00ab\u00a0frequency modulation\u00a0\u00bb pour les ondes radio. Visuellement ces deux types de modulation ressemblent aux sch\u00e9mas ci-dessous. Vous trouverez un article de vulgarisation (un peu touffu […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":9,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-321","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/pages\/321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/comments?post=321"}],"version-history":[{"count":8,"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/pages\/321\/revisions"}],"predecessor-version":[{"id":459,"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/pages\/321\/revisions\/459"}],"up":[{"embeddable":true,"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/pages\/9"}],"wp:attachment":[{"href":"https:\/\/math.univ-lyon1.fr\/perso\/wp-json\/wp\/v2\/media?parent=321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}