I found the SierraTeck) Motion Activated Audio Player on Amazon for $49.99. Then one day I stumbled upon a product that I thought might do the trick: a motion-controlled sound player. I thought there had to be a better solution, but amazingly, no one on the Internet had any great ideas. I didn’t want a bunch of drapes hanging in it. I hung drapes on the walls and door, which actually did help somewhat, but it was impractical and cluttered up my tiny bathroom. Next, I did some experiments to try to dampen and isolate the sound. It could be a lot of work and it might not even solve the problem! My first instinct was to install a bathroom fan to mask the noise, but that seemed like a big hassle, and furthermore, many modern fans are pretty quiet. Not good in Southern California which is going through a drought. Or sometimes, guests would flush first, do their thing, then flush again. So, to mask the sound, I’d turn on the TV. It’s embarrassing for the person using the bathroom and awkward for everyone else. Whenever someone uses the toilet, everyone can hear the person doing their thing. It’s a common problem: you have a bathroom with thin walls and/or a flimsy door adjacent to a living room or other common area. Here’s one effective way to mask private noises when people use your bathroom

How to get rid of white noise