The Mystery of Sonar Boy:
Ben Underwood’s echolocation isn’t a hoax, but it’s not an unexplained mystery, either. Ben really can sense nearby objects with reflected sound waves. But so can you.
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Go ahead and try out the skill you never knew you had. First, close your eyes and put on a blindfold, and then ask a friend to move a frying pan forward and backward in front of your face. Now start making noises—any noises you want. You can click your tongue like Sonar Boy, or you can whistle, or you can sing a scale. With a little bit of practice, you’ll be able to tell when the pan is close to you and when it’s not.
Also see, two interesting videos, CBS story and an Ellen show appearance. And read a 2003 BBC article on how the Blind ’see with sound’.
Related: Artificial Corneas - Seeing Machine from MIT
