Hey, I’m assuming that This has something to with the speed audacity writes to disk? Its kind of a cool sound, and I’m hoping its distinct enough that listening to the file will give someone a good idea. I used different inputs and recording options, all do this. This one was just with my laptop’s built in microphone. This is the first time I’ve used any recording software on my computer. It’s fairly new, but has acquired some physical wear.
That’s probably Windows Enhanced Services thinking your guitar is air conditioner noise.