{"id":8961,"date":"2021-12-21T12:16:05","date_gmt":"2021-12-21T10:16:05","guid":{"rendered":"https:\/\/www.loudspeakers.audio\/?post_type=ufaq&#038;p=8961"},"modified":"2022-03-02T10:27:44","modified_gmt":"2022-03-02T08:27:44","slug":"usb-problems","status":"publish","type":"ufaq","link":"https:\/\/www.loudspeakers.audio\/fr\/faqs\/usb-problems\/","title":{"rendered":"Probl\u00e8mes d'USB"},"content":{"rendered":"<style>.ewd-ufaq-post-margin-symbol { color: #4055a9 !important; }.ewd-ufaq-post-margin-symbol { border-color: #53037d !important; }.ewd-ufaq-faq-display-style-block.ewd-ufaq-post-active, .ewd-ufaq-faq-display-style-block.ewd-ufaq-post-active a,.ewd-ufaq-faq-display-style-block:hover, .ewd-ufaq-faq-display-style-block:hover a, .ewd-ufaq-faq-display-style-block:hover h5 { background-color: #617ffe !important; }.ewd-ufaq-faq-display-style-border_block.ewd-ufaq-post-active, .ewd-ufaq-faq-display-style-border_block:hover, .ewd-ufaq-faq-display-style-border_block:hover h5 { background-color: #617ffe !important; }.ewd-ufaq-faq-display-style-border_block .ewd-ufaq-faq-body { border-color: #617ffe !important; }.ewd-ufaq-faq-display-style-border_block .comment-reply-title, .ewd-ufaq-faq-display-style-border_block:hover .comment-reply-title { background-color: transparent !important; }.ewd-ufaq-faq-display-style-block:hover .ewd-ufaq-post-margin-symbol, .ewd-ufaq-category-post-margin-symbol, .ewd-ufaq-faq-display-style-block:hover h5 { color: #4055a9 !important; }.ewd-ufaq-faq-display-style-border_block:hover .ewd-ufaq-post-margin-symbol, .ewd-ufaq-category-post-margin-symbol, .ewd-ufaq-faq-display-style-border_block:hover h5 { color: #4055a9 !important; }.ewd-ufaq-faq-header-title a { color: #7b2c2c !important; }div.ewd-ufaq-faq-title h5 { color: #4055a9 !important; }div.ewd-ufaq-faq-post p { color: #000000 !important; }div.ewd-ufaq-faq-category-title h3 { color: #2b1010 !important; }div.ewd-ufaq-faq-categories, div.ewd-ufaq-faq-tags { color: #9b4c4c !important; }div.ewd-ufaq-faq-categories, div.ewd-ufaq-faq-tags { margin: 30 !important; }<\/style><div  class=\"ewd-ufaq-faq-list ewd-ufaq-page-type-infinite_scroll ewd-ufaq-category-tabs-\" id='ewd-ufaq-faq-list'>\n\n\t<input type='hidden' name='show_on_load' value='' id='ewd-ufaq-show-on-load' \/>\n<input type='hidden' name='include_category' value='' id='ewd-ufaq-include-category' \/>\n<input type='hidden' name='exclude_category' value='' id='ewd-ufaq-exclude-category' \/>\n<input type='hidden' name='orderby' value='set_order' id='ewd-ufaq-orderby' \/>\n<input type='hidden' name='order' value='asc' id='ewd-ufaq-order' \/>\n<input type='hidden' name='post_count' value='-1' id='ewd-ufaq-post-count' \/>\n<input type='hidden' name='current_url' value='\/fr\/wp-json\/wp\/v2\/ufaq\/8961' id='ewd-ufaq-current-url' \/>\n\t\n\t\n\t<div class='ewd-ufaq-faqs'>\n\n\t\t<div  class=\"ewd-ufaq-faq-div ewd-ufaq-faq-column-count-two ewd-ufaq-faq-responsive-columns-1 ewd-ufaq-faq-display-style-minimalist ewd-ufaq-can-be-toggled\" id='ewd-ufaq-post-8961-gcagrrZ3Pw' data-post_id='8961'>\n\n\t\t\n\t<div class='ewd-ufaq-faq-title ewd-ufaq-faq-toggle'>\n\t\n\t<a class='ewd-ufaq-post-margin'  href='#' role=\"button\">\n\n\t\t<div class='ewd-ufaq-post-margin-symbol ewd-ufaq-square'>\n\t\t\t<span >B<\/span>\n\t\t<\/div>\n\n\t\t<div class='ewd-ufaq-faq-title-text'>\n\n\t\t\t<h5>\n\t\t\t\tProbl\u00e8mes d'USB\t\t\t<\/h5>\n\n\t\t<\/div>\n\n\t\t<div class='ewd-ufaq-clear'><\/div>\n\n\t<\/a>\n\t\n<\/div>\n\t\n\t<div class='ewd-ufaq-faq-body' >\n\n\t\t\n\t\t\t\n\t\t\n\t\t\t\n\t\t\n\t\t\t<div class='ewd-ufaq-post-margin ewd-ufaq-faq-post'>\n\t<p>En utilisant un microphone usb comme l'UMIK de MiniDSP, vous pouvez rencontrer un souci avec l'affichage de la r\u00e9ponse impulsionnelle : l'impulsion elle-m\u00eame n'est pas propre et on retrouve de nombreux pics rapproch\u00e9s. Ceci peut \u00eatre du \u00e0 des probl\u00e8mes d'instabilit\u00e9s ou de coupure tr\u00e8s courtes pendant l'enregistrement. Le d\u00e9calage \u00e9ventuel entre l'horloge du lecteur et celle de l'enregistreur est automatiquement compens\u00e9 par resampling des s\u00e9quences enregistr\u00e9es.<\/p>\n<p>Les craquements ou coupures peuvent \u00eatre diminu\u00e9s ou supprim\u00e9s en optimisant certains param\u00e8tres :<\/p>\n<ul>\n<li>d'abord la longueur maximale d'un c\u00e2ble USB classe 1 est de 3m (c\u00e2ble en parfait \u00e9tat), essayer avec un autre c\u00e2ble certifi\u00e9<\/li>\n<li>pour Windows, dans configuration\/systeme\/param\u00e8tres avanc\u00e9s, ajuster pour les meilleures performances et favoriser les \"services d'arri\u00e8re plan\"<\/li>\n<li>\u00e9viter d'utiliser des ports USB partag\u00e9s par d'autres composants de l'ordinateur<\/li>\n<li>dans le BIOS, essayer de r\u00e9duire la valeur PCI bridge latency timer (pas possible en PCIe)<\/li>\n<li>dans le BIOS, d\u00e9sactiver CPU throttling<\/li>\n<li>d\u00e9sactiver les \u00e9quipements audio non utilis\u00e9s<\/li>\n<li>d\u00e9sactiver toutes les options d'\u00e9conomie d'\u00e9nergie et configurer en performances \u00e9lev\u00e9es<\/li>\n<li>donner la plus haute priorit\u00e9 au logiciel d'enregistrement<\/li>\n<li>d\u00e9sactiver temporairement l'anti-virus<\/li>\n<li>quelques liens utiles :<\/li>\n<\/ul>\n<p><span style=\"color: #0000ff\"><a style=\"color: #0000ff\" href=\"https:\/\/wiki.audacityteam.org\/wiki\/Managing_Computer_Resources_and_Drivers\" target=\"_blank\" rel=\"noopener\">Optimise Audacity and computer<\/a><\/span><\/p>\n<p><span style=\"color: #0000ff\"><a style=\"color: #0000ff\" href=\"https:\/\/www.cantabilesoftware.com\/glitchfree\/\" target=\"_blank\" rel=\"noopener\">Glitchfree<\/a><\/span><\/p>\n<p><a href=\"https:\/\/support.focusrite.com\/hc\/en-gb\/articles\/207355205-Optimising-your-PC-for-Audio-on-Windows-10\" target=\"_blank\" rel=\"noopener\">Optimising-your-PC-for-Audio-on-Windows-10<\/a><\/p>\n<p><a href=\"https:\/\/support.serato.com\/hc\/en-us\/articles\/203057850-PC-Optimization-Guide-for-Windows-8\" target=\"_blank\" rel=\"noopener\">PC-Optimization-Guide-for-Windows-8<\/a><\/p>\n<p><a href=\"https:\/\/support.serato.com\/hc\/en-us\/articles\/202310764-Troubleshoot-USB-dropouts-audio-glitches-Windows-\" target=\"_blank\" rel=\"noopener\">Troubleshoot-USB-dropouts-audio-glitches-Windows<\/a><\/p>\n<p><a href=\"https:\/\/support.serato.com\/hc\/en-us\/articles\/202552390-Troubleshoot-USB-dropouts-audio-glitches-Mac-\" target=\"_blank\" rel=\"noopener\">Troubleshoot-USB-dropouts-audio-glitches-Mac<\/a><\/p>\n<p><a href=\"https:\/\/www.resplendence.com\/latencymon\" target=\"_blank\" rel=\"noopener\">Test USB latency<\/a><\/p>\n<p><a href=\"https:\/\/www.aes.org\/e-lib\/browse.cfm?elib=15592\" target=\"_blank\" rel=\"noopener\">AES paper 8169 : Impulse response measurements in the presence of clock drift<\/a><\/p>\n<p>Et un site d\u00e9di\u00e9 \u00e0 l'audio sur ordinateur :<\/p>\n<p><span style=\"color: #0000ff\"><a style=\"color: #0000ff\" href=\"https:\/\/www.thewelltemperedcomputer.com\/index.html\" target=\"_blank\" rel=\"noopener\">The well tempered computer<\/a><\/span><\/p>\n<\/div>\n\t\t\n\t\t\t<div class='ewd-ufaq-permalink'>\n\t\n\t<a href=\"https:\/\/www.loudspeakers.audio\/fr\/faqs\/usb-problems\/single-faq\/usb-problems\/\">\n\t\t\n\t\tPermalink\t\t\t\n\t<\/a>\n\n<\/div>\n\t\t\n\t\t\t\n\t\t\n\t\t\t\n\t\t\n\t\t\t<div class='ewd-ufaq-faq-custom-fields'>\n\n\t\n<\/div>\n\t\t\n\t\t\t\n\t\t\n\t\t\t\n\t\t\n\t\t\t\n\t\t\n\t<\/div>\n\n<\/div>\n\t<\/div>\n\n\t\n<\/div>","protected":false},"excerpt":{"rendered":"<p>B USB problems If you use a USB microphone such as the MiniDSP Umik, you may find a problem with your measured impulse response : the impulse itself is not clean and shows many peaks together instead of just one. This may come from USB problems : gliches or short &hellip;<\/p>","protected":false},"author":1,"featured_media":0,"template":"","ufaq-category":[188],"ufaq-tag":[],"class_list":["post-8961","ufaq","type-ufaq","status-publish","hentry","ufaq-category-3-how-to-record"],"_links":{"self":[{"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/ufaq\/8961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/ufaq"}],"about":[{"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/types\/ufaq"}],"author":[{"embeddable":true,"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/media?parent=8961"}],"wp:term":[{"taxonomy":"ufaq-category","embeddable":true,"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/ufaq-category?post=8961"},{"taxonomy":"ufaq-tag","embeddable":true,"href":"https:\/\/www.loudspeakers.audio\/fr\/wp-json\/wp\/v2\/ufaq-tag?post=8961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}