{"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\/en\/faqs\/usb-problems\/","title":{"rendered":"USB problems"},"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='\/en\/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-jPGxZ4VYnN' 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\tUSB problems\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>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 drop-outs while recording gives such problem. The clock drift itself, coming from a mismatch between player clock and recording clock is compensated by resampling the log sine sweeps thanks to dual chirps at start and end of the audio sequence.<\/p>\n<p>Glitches or drop-outs may be avoided by checking and optimising following parameters :<\/p>\n<ul>\n<li>remember that the max length of a non-damaged cable is about 3m for USB class 1 (so try with another certified cable)<\/li>\n<li>in windows configuration\/system\/advanced parameters : adjust for best performances and activate &#8220;background services&#8221;<\/li>\n<li>USB sharing : change USB port and try tu use a port not shared by other components,<\/li>\n<li>in BIOS, try to modify PCI bridge latency timer (PCIe don&#8217;t have latency timers)<\/li>\n<li>in BIOS, disable CPU throttling<\/li>\n<li>disable unused sound devices<\/li>\n<li>disabled all energy saving options and set power plan to max efficiency<\/li>\n<li>set highest priorities to the recording process<\/li>\n<li>deactivate temporarelly your antivirus<\/li>\n<li>some usefull links :<\/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>And for everything related to audio on computers :<\/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\/en\/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>\n","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\/en\/wp-json\/wp\/v2\/ufaq\/8961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.loudspeakers.audio\/en\/wp-json\/wp\/v2\/ufaq"}],"about":[{"href":"https:\/\/www.loudspeakers.audio\/en\/wp-json\/wp\/v2\/types\/ufaq"}],"author":[{"embeddable":true,"href":"https:\/\/www.loudspeakers.audio\/en\/wp-json\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/www.loudspeakers.audio\/en\/wp-json\/wp\/v2\/media?parent=8961"}],"wp:term":[{"taxonomy":"ufaq-category","embeddable":true,"href":"https:\/\/www.loudspeakers.audio\/en\/wp-json\/wp\/v2\/ufaq-category?post=8961"},{"taxonomy":"ufaq-tag","embeddable":true,"href":"https:\/\/www.loudspeakers.audio\/en\/wp-json\/wp\/v2\/ufaq-tag?post=8961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}