By Mark Jewell

Associated Press

BOSTON -- Elwood ``Woody`` Norris doesn`t let conventional thinking stand in the way of his inventions.

To cut down on manmade sound straying beyond its intended audience, Norris developed a way to create a focused beam of sound waves, sort of like focusing a beam of light.

To put flight within reach of people lacking time and money to invest in pilot training, Norris helped create a simple-to-fly, ultralight helicopter.

Those ideas and others have earned Norris 47 U.S. patents over four decades in fields including engineering and medicine -- not bad for a guy who started taking apart radios at age 8 but never earned a college degree.

At age 63, Norris has earned what he calls ``the Nobel Prize of inventing``: the $500,000 annual Lemelson-MIT Prize, the largest single cash award for invention in the United States. Norris` prize is to be announced by the Massachusetts Institute of Technology on Monday and bestowed Thursday in Portland, Ore.

``I`m interested in everything,`` Norris, who subscribes to 35 magazines on topics scientific and otherwise, told The Associated Press.

But the Poway, Calif., resident and father of 11 children -- ranging in age from 13 to 38 -- says he`s ``not Thomas Edison.``

``That guy used to work and not sleep. I`m the laziest inventor you ever met,`` he said. ``My inventing is in my head -- I don`t have to be in the lab working and sweating.``

His sound-focusing invention, known as HyperSonic Sound, starts by generating ultrasonic -- above the range of human hearing -- sound waves, which can be focused in a tight beam rather than spreading out in all directions.

As these high-frequency sound waves pass through the air, they generate lower frequency sounds that people can hear. By stepping into the ``beam,`` a person can hear sound that someone standing a foot or more away can`t detect.

``It`s going to quiet everything down,`` Norris said. ``If you don`t want to be bothered by it, you step to one side, and you don`t hear it.``

San Diego-based American Technology Corp., which Norris founded in 1980, is working on commercial applications with automobile companies, supermarket chains, museums, airports and the Department of Defense.

In cars, the technology could allow parents to listen to their favorite music in the front seats while kids in back choose their own. An airport terminal message could be beamed only to travelers in a specific area.