Okay, so this is a phenomena that I have just begun experiencing only a few months ago. It doesn't occur all of the time, only on the rare occasion, maybe once every week or so and always while I'm sitting at the computer.
In my left ear, there will be a strange electronic sound, almost digital in nature if I can describe it that way. The sound is not coming from the computer, not in the usual manner anyway, but definitely from inside my ear. In description, the best I can come up with is the synthesized sound of high-pitched dentists drill, moving up and down a couple of octaves, and lasting only about a second.
Has anyone experiencing anything remotely similar to this? I experience all sorts of 'unusual' phenomena on a normal basis, but this is unique, and I'm certain it's linked to the computer.