I use a physical white noise generator by Marpac: https://www.marpac.com/ https://www.marpac.com/ It's essentially a fan inside of a cylindrical thing, but it

I use a physical white noise generator by Marpac: https://www.marpac.com/ https://www.marpac.com/ It's essentially a fan inside of a cylindrical thing, but it doesn't cause any real air movement like an actual fan would. You can adjust the volume and timbre of the sound, too. It probably won't drown out a snoring partner, but I never wake up when a train sounds its horn a few blocks away in the middle of the night. When I traveled without it once, I really missed it as I heard all the traffic noise outside of my hotel.