[GaryBulguihb]

I always thought this was normal and so never mentioned it to the doc or anything, but after a casual conversation I'm wondering if I'm alone.

I can hear flashing lights, and anything that strobes, including animated .gif images with low framerate.

The pitch of the sound depends upon the color, brightness and frequency of the light. For instance, the red flashing lights on distance radio towers sound like a slow "wooooummp.....wooooummp" whereas a distance car turn signal is more "phomp, phomp, phomp."

A low-framerate gif may sound like "Chog, chog, chog" as each successive frame passes.

/me offers bat, point at head.