I use a fan but it doesn't mask the tinnitus. I have high pitched tinnitus and there's just too much variance between the two. The fan does relax me and does mask other sounds but not the tinnitus. I personally use a mp3 from Sound Oasis (the people who make the sound machines) called Summer Night. It's basically cricket sounds but a good one and one that matches my tinnitus. Below is a link where you can sample. Some of their sound machines may come with it already loaded. https://www.soundoasis.com/sounds/nature-sounds/