My hum is definitely tinnitus. It can on after an infection and some hearing loss. It drones and reverberates around sound and is absolutely awfully intrusive. Some a/c units seem to have a rhythm or pattern to their noise .Some days are worse than others. I also have high frequency tinnitus which I don’t care about at all as it is constant.
For those who also have humming tinnitus….had anyone been able to live/habituate to it? How long did it take? Any advice? I try to keep at least 40db of sound around me at all times but the booming, pulsing aspect of it is really hard to live with.