Ok, this will be the weirdest post ever but I only post here because of the chances someone screwing around with a white noise generator has experienc ed the same thing.
I use one to sleep with and have for years off and on, when my air cleaner acts up. I normally use the air cleaner.
So I know that RF can work it's way into one if your close to a transmitter BUT the other night, I very vividly heard a low male voice that repeatedly was singing a short maybe 6 or 7 seconds long, faint sounding melody that was unintelligible but constant -- over and over again in a perfect cycle. The same melody over and over again. Got up, turned off the generator and i t stopped. (And fixed my damn air cleaner).
??
Now no radio transmission is going to do that.
Pareidolia is was not. (Yes -- I looked that up). It was very real and I wa s NOT asleep or nearing sleep. I have insomnia often.
I can hear the comments now but seriously, anybody else?