Don Pearce wrote:

Ever try recording it? That would have settled the matter once and for
all.


No, I didn't. It is entirely possible that nothing whatever would have been
recorded. I don't have an explanation. Just that the Tinnitus explanation
doesn't seem to be the answer, in my case.

I'm wondering about direct excitation of the auditory nerves by....something
electromagnetic. This is just speculation, of course. I didn't do any
measurements. Also, this doesn't explain why others could not hear it.

And no, I have never been abducted by aliens and I don't believe that the
Earth is about to be engulfed by a black hole when they get the LHC going
again :-)