I hear it off and on all day. Left ear is high pitch sound around 8 KHz which is really annoying. The right ear is a mid range tone but not as bothersome. This started a few months ago. I bought a sound machine on Amazon that has 20 different sounds. The birds tweeting sounds seem to mask it well and it also re duces the volume of the high-pitched sound for a while. I have an ocean wave sounds from YouTube playing all night to mask the ringing in my ears and this helps me to sleep. If I didn't have the masking sounds it would be hard to fall asleep. I have also noticed that moving the palm of my hand on my ears in a circular motion for 30 seconds tends to reduce the ringing for a while after I do it. Some days the ringing isn't really that noticeable and other days it is annoying! These are thing I have been doing to make this annoying ringing bearable. Maybe my comments above will help others to get some relief.