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March 23, 2012 05:50 am GMT
Original Link: http://feeds.mashable.com/~r/Mashable/~3/XnWMA0Kxul4/
The $175 Speaker That Lets You Direct Sound Like a Laser Beam
You can already buy a special kind of loudspeaker that directs sound with the precision a flashlight beam. These gadgets can send messages to pe…Original Link: http://feeds.mashable.com/~r/Mashable/~3/XnWMA0Kxul4/
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