Apr 17, 2015 When I'm trying to sleep I hear a high pitched, ringing noise. I can only hear it if everything else is quiet. I've considered if this is a medical issue.... The sound may keep time with your heartbeat, it may keep pace with your breathing, it may be constant, or it may come and go. Tinnitus is most common in people.... The frequency or pitch can also have some effect, since high-pitched sounds are ... from noise-induced hearing loss may also experience continual ringing in... 21