Elwood "Woody" Norris Soundless Sound SystemIt works by sending a focused beam of sound above the range of human hearing. When it lands on you, it seems like sound is coming from inside your head.
The emitter - an aluminum square - is hooked up by a wire to a CD player. There's no speaker, but when the pad is pointed at you, you will hear the music.
Norris' HyperSonic Sound system has won him an award coveted by inventors - the $500,000 annual Lemelson-MIT Prize. Norris holds 47 U.S. patents, including one for a digital handheld recorder and another for a handsfree headset. He said the digital recorder made him an inventor for life.
"Imagine your wife wants to watch television and you want to read a book, like the intellectual you are. Imagine you are a lifeguard or a coach and you want to yell at someone, he'll be the only one to hear you." he said.