Name: Hypersonic sound and other inventions
Uploaded: 2009-01-26T01:00:00Z
Duration: 13 min 29 s
Description: Woody Norris shows off two of his inventions that use sound in new ways, including the Long Range Acoustic Device, or LRAD. He talks about his untraditional approach to inventing and education, because, as he puts it: "Almost nothing has been invented yet." So -- what's next?

Woody Norris shows off two of his inventions that use sound in new ways, including the Long Range Acoustic Device, or LRAD. He talks about his untraditional approach to inventing and education, because, as he puts it: "Almost nothing has been invented yet." So -- what's next?

Hypersonic sound and other inventions

Hypersonic sound technology focuses audio as precisely as a laser focuses light. Instead of sound spilling in every direction, it can now be delivered to a single spot or person, even in a crowded space. In one demonstration, a waterfall recording was audible only when the beam was aimed directly at someone's head. This breakthrough opens up possibilities from private TV audio in supermarkets to military communication over great distances.