The good noises

There are certain noises that always make me clam. These noises come from certain machines. Space heats, fans, air conditioners, rain on the roof, and airplane noise (though not when its too loud). In that order too. Heaters are best for me. I think these are white noises but I'm not sure because the only white noise samples online I've found are of static. I dislike static. Too scratchy. But these noises are always comforting. I like to sleep with a fan on. I do my best thinking when these noises are in the background (late at night too for some reason). It started when I was a kid and my parents got a space heater. In the early cold morning I would go to it and eat breakfast beside it. These noises always seem best when its dark outside (and dimly lit inside). My mind would be filled with the noise. I could think with the noise. Even when I don't actively think I gain a certain kind of focus when I causally listen to it. When I feel down it doesn't comfort me though, it just lets me think through the sad thoughts more. I think it masks the outside world and allows me to be alone with my thoughts. Just me, my thoughts, the dark room, and the noise.