"I hear bats" - Astounding! 8]
It would be very interesting to get a hearing test done. One which provides you with a chart of frequency against intensity perceivable. I'd check that they are equipped to go over 20kHz first.
"I hear bats" - Astounding! 8]
It would be very interesting to get a hearing test done. One which provides you with a chart of frequency against intensity perceivable. I'd check that they are equipped to go over 20kHz first.