The oddest thing is I get this crazy high pitched pulsating spike whenever I go into my bedroom. It only pulsates or goes to the high of a pitch in my bedroom. Nobody of course hears anything odd. I got a sound meter and the sound level is the same as other rooms. fan, sound machine, nothing works, in this room its can't be masked or habituated. Other rooms there could be an hour or two of habituation but in this room it a pulsating "10" every minute I'm in there, no matter what. I'll wake up like that too? what could be going on?