{"id":4866,"date":"2013-09-14T10:03:36","date_gmt":"2013-09-14T17:03:36","guid":{"rendered":"http:\/\/crimeandtheforcesofevil.com\/blog\/?p=4866"},"modified":"2016-10-05T17:50:00","modified_gmt":"2016-10-06T00:50:00","slug":"what-the-hell-is-this-noise","status":"publish","type":"post","link":"https:\/\/crimeandtheforcesofevil.com\/blog\/2013\/09\/14\/what-the-hell-is-this-noise\/","title":{"rendered":"what the hell is this noise"},"content":{"rendered":"

Let’s play everybody’s favourite new game, “what the hell is this noise?”!<\/p>\n

It’s captured on a live mic in a quiet recording studio; the sound is not audible in the room itself. I’m really curious if it sounds familiar to anyone, and reminds them of anything other than<\/em> ground loop:<\/p>\n

what-is-it-noise.mp3<\/a><\/p>\n

This was picked up on AKG200 microphones, across multiple mics (All AKG200s) and cables, so it’s not am individual microphone or cable problem.<\/p>\n

It starts at about 450hz and goes all the way through the floor. There’s something to amplify throughout that signal range. I put a sweep equaliser and found tones to boost throughout that range. Nothing above that, though.<\/p>\n

I realise it sounds like a ground loop, but it’s not; I chased the 60hz question for a while, but it’s far wider than that. I have a workaround that reduces it to inaudibility that involves changing nothing<\/em> connected to any<\/em> of the equipment – at least, as long as I’m recording other people. That would not be true for a ground loop.<\/p>\n

I posted about this<\/a> a couple of places last night; the link goes to the Facebook link that got a bunch of comments.<\/p>\n

Also, if I change out the mic to an Octava 012, it goes away. Also, a Shure SM57. No cable change fixes any part of it.<\/p>\n

Whatcha got?<\/p>\n","protected":false},"excerpt":{"rendered":"

Let’s play everybody’s favourite new game, “what the hell is this noise?”! It’s captured on a live mic in a quiet recording studio; the sound is not audible in the room itself. I’m really curious if it sounds familiar to anyone, and reminds them of anything other than ground loop: what-is-it-noise.mp3 This was picked up [&hellip<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-4866","post","type-post","status-publish","format-standard","hentry","category-studio"],"_links":{"self":[{"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/posts\/4866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/comments?post=4866"}],"version-history":[{"count":1,"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/posts\/4866\/revisions"}],"predecessor-version":[{"id":9771,"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/posts\/4866\/revisions\/9771"}],"wp:attachment":[{"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/media?parent=4866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/categories?post=4866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crimeandtheforcesofevil.com\/blog\/wp-json\/wp\/v2\/tags?post=4866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}