{"id":4636,"date":"2026-08-12T15:46:48","date_gmt":"2026-08-12T13:46:48","guid":{"rendered":"https:\/\/ellistat.com\/?post_type=guide-dutilisateur&#038;p=4636"},"modified":"2026-08-12T15:46:48","modified_gmt":"2026-08-12T13:46:48","slug":"decomposition-de-fourier","status":"publish","type":"guide-dutilisateur","link":"https:\/\/ellistat.com\/es\/guide-dutilisateur\/decomposition-de-fourier\/","title":{"rendered":"Descomposici\u00f3n de Fourier"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Cette page cherche les&nbsp;<strong>p\u00e9riodicit\u00e9s<\/strong>&nbsp;d&rsquo;un signal : ce qui se r\u00e9p\u00e8te \u00e0 intervalle r\u00e9gulier et reste invisible sur une carte de contr\u00f4le.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"686\" src=\"https:\/\/ellistat.com\/wp-content\/uploads\/fourier.png\" alt=\"\" class=\"wp-image-4637\" srcset=\"https:\/\/ellistat.com\/wp-content\/uploads\/fourier.png 964w, https:\/\/ellistat.com\/wp-content\/uploads\/fourier-300x213.png 300w, https:\/\/ellistat.com\/wp-content\/uploads\/fourier-768x547.png 768w, https:\/\/ellistat.com\/wp-content\/uploads\/fourier-18x12.png 18w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Les param\u00e8tres :<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Intervalle d&rsquo;\u00e9chantillonnage<\/strong>\u00a0: la dur\u00e9e entre deux mesures. C&rsquo;est lui qui donne l&rsquo;\u00e9chelle des fr\u00e9quences ; sans lui, les r\u00e9sultats sont en unit\u00e9s arbitraires ;<\/li>\n\n\n\n<li><strong>Fen\u00eatre<\/strong>\u00a0: le fen\u00eatrage appliqu\u00e9 avant transformation, pour limiter les artefacts de bord ;<\/li>\n\n\n\n<li><strong>Bande de fr\u00e9quences (Hz)<\/strong>\u00a0: restreint l&rsquo;analyse \u00e0 une plage ;<\/li>\n\n\n\n<li><strong>Top K<\/strong>\u00a0y\u00a0<strong>Amplitude min<\/strong>\u00a0: ne conserver que les raies les plus fortes.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Les r\u00e9sultats donnent le\u00a0<strong>spectre<\/strong>, la table des\u00a0<strong>raies<\/strong>, fr\u00e9quence et amplitude, le signal\u00a0<strong>reconstruit<\/strong>\u00a0superpos\u00e9 \u00e0 l&rsquo;original, et le\u00a0<strong>r\u00e9sidu<\/strong>. Les raies s&rsquo;exportent.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\ud83d\udca1\u00a0Une raie franche se traduit en cause physique par sa p\u00e9riode : un tour de broche, une rotation de convoyeur, un cycle de r\u00e9gulation thermique, une rel\u00e8ve d&rsquo;\u00e9quipe. C&rsquo;est le r\u00e9sidu qui dit si le mod\u00e8le a capt\u00e9 l&rsquo;essentiel s&rsquo;il reste structur\u00e9, une p\u00e9riodicit\u00e9 a \u00e9t\u00e9 manqu\u00e9e.<\/p>\n<\/blockquote>","protected":false},"featured_media":0,"menu_order":80,"template":"","meta":{"_acf_changed":true},"menu-guide-dutilisateur":[22],"class_list":["post-4636","guide-dutilisateur","type-guide-dutilisateur","status-publish","hentry","menu-guide-dutilisateur-4-statistiques-descriptives"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>D\u00e9composition de Fourier - Ellistat<\/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:\/\/ellistat.com\/es\/guia-del-usuario\/decomposition-de-fourier\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00e9composition de Fourier - Ellistat\" \/>\n<meta property=\"og:description\" content=\"Cette page cherche les&nbsp;p\u00e9riodicit\u00e9s&nbsp;d&rsquo;un signal : ce qui se r\u00e9p\u00e8te \u00e0 intervalle r\u00e9gulier et reste invisible sur une carte de contr\u00f4le. Les param\u00e8tres : Les r\u00e9sultats donnent le\u00a0spectre, la table des\u00a0raies, fr\u00e9quence et amplitude, le signal\u00a0reconstruit\u00a0superpos\u00e9 \u00e0 l&rsquo;original, et le\u00a0r\u00e9sidu. Les raies s&rsquo;exportent. \ud83d\udca1\u00a0Une raie franche se traduit en cause physique par sa p\u00e9riode : [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ellistat.com\/es\/guia-del-usuario\/decomposition-de-fourier\/\" \/>\n<meta property=\"og:site_name\" content=\"Ellistat\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ellistat.com\/wp-content\/uploads\/fourier.png\" \/>\n\t<meta property=\"og:image:width\" content=\"964\" \/>\n\t<meta property=\"og:image:height\" content=\"686\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/\",\"url\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/\",\"name\":\"D\u00e9composition de Fourier - Ellistat\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ellistat.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ellistat.com\\\/wp-content\\\/uploads\\\/fourier.png\",\"datePublished\":\"2026-08-12T13:46:48+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/#primaryimage\",\"url\":\"https:\\\/\\\/ellistat.com\\\/wp-content\\\/uploads\\\/fourier.png\",\"contentUrl\":\"https:\\\/\\\/ellistat.com\\\/wp-content\\\/uploads\\\/fourier.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ellistat.com\\\/guide-dutilisateur\\\/decomposition-de-fourier\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/ellistat.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"D\u00e9composition de Fourier\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ellistat.com\\\/#website\",\"url\":\"https:\\\/\\\/ellistat.com\\\/\",\"name\":\"Ellistat\",\"description\":\"La suite qualit\u00e9 de l&#039;industrie m\u00e9canique\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ellistat.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"D\u00e9composition de Fourier - Ellistat","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ellistat.com\/es\/guia-del-usuario\/decomposition-de-fourier\/","og_locale":"es_ES","og_type":"article","og_title":"D\u00e9composition de Fourier - Ellistat","og_description":"Cette page cherche les&nbsp;p\u00e9riodicit\u00e9s&nbsp;d&rsquo;un signal : ce qui se r\u00e9p\u00e8te \u00e0 intervalle r\u00e9gulier et reste invisible sur une carte de contr\u00f4le. Les param\u00e8tres : Les r\u00e9sultats donnent le\u00a0spectre, la table des\u00a0raies, fr\u00e9quence et amplitude, le signal\u00a0reconstruit\u00a0superpos\u00e9 \u00e0 l&rsquo;original, et le\u00a0r\u00e9sidu. 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