Hi JC. I have the usual "carpenter pattern" deafness (loss of high frequencies, also loss of consonants, vowells, and complete syllables sometimes) from yrs. of whining circle saws, routers, etc. I count my myself fortunate that I hear "crickets" (rather pleasant) only intermittently or may be I'm only intermittently conscious of it. Would the "noise stimulation" you speak of be available from the sound generators that people use during sleep?

jack