I was just trying to describe this sound to a friend, and you captured the most incredible specimen! This is interference between the video card and the sound card in your computer. The video card is emitting electrical signals that should probably be contained, and the sound card isn't completely shielded, so the video card effort ends up in the audio signal. Beautiful and haunting.
Unbelievably beautiful. Takes me back to my early years spent in the land of ferocious winters and time in the wintry mountains in the middle of nowhere. Love it, love it, love it. Could listen to it forever. So purifying and revitalizing. How I envy the dessert monks. Cannot thank you enough. The ultimate beauty.