{"id":851,"date":"2021-02-05T12:58:32","date_gmt":"2021-02-05T11:58:32","guid":{"rendered":"http:\/\/www.glui.de\/wp\/?p=851"},"modified":"2021-02-05T15:10:43","modified_gmt":"2021-02-05T14:10:43","slug":"update-noise-measurement","status":"publish","type":"post","link":"http:\/\/www.glui.de\/wp\/?p=851","title":{"rendered":"Update noise measurement"},"content":{"rendered":"\n

Following a suggestion from “enjon”<\/a> I tried the Room EQ Wizard<\/a> to get a somewhat more meaningful SNR measurement. Here’s the result:<\/p>\n\n\n\n

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

For the moment I’m happy with -116.1dBA, although there’s still a little room for improvement. The low frequency noise could be reduced somewhat, by moving the HP filter cutoff frequency up a notch, closer to the lowest string frequency. <\/p>\n\n\n\n

Of course this still doesn’t compare with professional audio measurement gear but it’s definitely better than my initial simple RMS readout. Alas, I do miss having easy access to an Audio Precision Portable One like back in the days at ZKM.<\/p>\n\n\n\n

Three more update tidbits:<\/p>\n\n\n\n

  1. The guitar is connected via 10m of un-shielded<\/em> (neither per pair nor overall) CAT-5 (Mogami 3367 to be precise). So for the moment I’m quite happy with the robustness of this new A2B link. Will have to see how it behaves under stage conditions.<\/li>
  2. Initial tests were battery-powered. Switching to ordinary 12V supplies resulted in increased noise. So I ended up buying a top-notch supply from Funk Tonstudiotechnik<\/a> – highly recommended gear if you’re willing to invest a bit more.<\/li>
  3. As this was not a measurement with shortened inputs but pickups connected, I had to heavily dampen the strings as well as the guitar itself on the table. Without this it acted like a seismometer where any truck passing by four floors below would introduce significant rumble into the system.<\/li><\/ol>\n\n\n\n

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

    Following a suggestion from “enjon” I tried the Room EQ Wizard to get a somewhat more meaningful SNR measurement. Here’s the result: For the moment I’m happy with -116.1dBA, although there’s still a little room for improvement. The low frequency noise could be reduced somewhat, by moving the HP filter cutoff frequency up a notch, … Continue reading Update noise measurement<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[229],"tags":[],"_links":{"self":[{"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=\/wp\/v2\/posts\/851"}],"collection":[{"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=851"}],"version-history":[{"count":11,"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=\/wp\/v2\/posts\/851\/revisions"}],"predecessor-version":[{"id":868,"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=\/wp\/v2\/posts\/851\/revisions\/868"}],"wp:attachment":[{"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=851"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.glui.de\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}