I have a white noise machine that doesn’t work for some reason, but I can’t remember off the top of my head what brand it is. If you have internet access, I suggest Youtubing white noise. There are a lot of options, with just plain white noise, nature sounds, rain, you name it. I’ve found different pitches, so hopefully you can find one you like. I’m sorry I can’t give you a recommendation for an actual white noise machine, but I hope this helps you.