> I've been sleeping with exponentially-smoothed brown noise for years. I use a raspberry pi with its hardware random number generator because with pseudorandom

> I've been sleeping with exponentially-smoothed brown noise for years. I use a raspberry pi with its hardware random number generator because with pseudorandom numbers or compressed samples I hear all sorts of artifacts - no doubt at least partially psychological, but psychology matters when you're trying to get to sleep. Uncompressed samples are fine and can be looped without a gap, but that's less fun. Well, there have certainly been a plenty of bad RNGs in use. > because sampling thermal noise (which is brown) It's not. You need a filter to get pink/brown noise out of it