its like a high pitched constant ringing...like ringing in your ear, but high pitched...

thing is, with noise pitch, the older you get you cant hear the hight pitches (hence my being able to hear it and DH not being able to) and how you can get phone ringtones that only teenagers can hear but their parents can't (because of the pitch it is). so I was just thinking if at my age I could hear it, how loud would it be for a baby

yea SS - those are the places the chemist here suggested, they even said 'heres a crazy thought, try the candle shop - dusk'