A horizontal line in my Spectral view-above 18k hz

[Matt29715684kyse]

I have never had this problem before, and to my knowledge nothing has changed in my recording enviroment technically or sound wise. Is this a software problem or user error? How would one go about not having this not show up in every recording? I've restarted ect. & made sure adobe is up to date. Any help would be appreciated. Thanks in advance!

[SteveG_AudioMasters_ · Accepted solution]

Things we can tell: It's at about 21kHz, and if that's a mic you are recording, its phase appears to be reversed (the excess negative excursions are the clue to that). Also, your line is effectively modulated (not constant), and that's possibly a larger clue.

What causes most of these artifacts is the oscillators in screen displays - that would primarily be things like iPads, etc and also possibly mobile phones. It's getting them into any sort of proximity to a mic that does it - the business end of a mic is remarkably susceptible to this, and generally these emissions aren't very well controlled. So for a start, does this ring any bells, or make any sort of sense?

[Matt29715684kyse]

Thank you it did! It was an electronic interference like you suggested. I removed lots of items from my workspace. It turned out to be LED lights I use.