Hi Anony,

I don't have the humming in my ears ,but I use to and sometimes still do, can hear my heart pounding in my ears as I try to sleep. Of course, my doctor put me on a heart med that stops it most of the time but until he did, I would turn a fan on. It helped to keep from concentrating on the pounding.
You might try some background noise to see if it helps.
Good luck,
Linda