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Re: Ultrasonic Hearing (via bone conduction!)




I believe the slowly-becoming-public sound technology, hypersonic sound, makes use of ultrasonic sound to transmit frequencies via bone conduction. This allows sound to be directed as a lasar. Very interesting. in any case it will some day be all around us (battery racks, soda machines, cars, mcdonalds, ad infinitum) 

http://www.ideas21.co.uk/248