As a performing musician, I'm going to have to call bull about whether a performer can hear a low mic buzz while performing the closing chorus of a very loud song like "Hey Jude," or that a blind man could hear it falling over, especially during "Hey Jude."
With tongue firmly in cheek, I have to ask, who should I believe, you or my lying eyes?
All I can tell you is my personal experience with hearing (mine is super acute), with microphones (I speak and perform), and with a very close friend with blindness. Some people really can hear and sense better than others. And legally blind people often still have “light and shadows” capability, but nothing beyond that.
That said, neither of us knows the truth I’m just saying, it’s possible he is legally blind—profoundly so—but also was able to sense the falling piece of equipment and instinctively make a lucky grab for it.
If you’ve been performing for a long time, has it been with ear protection? Have you noticed any loss of the top register, or conversations against a roomful of noise?