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May 2004

The Sound War

Focused beams of sound could direct music or speech to a single person in a crowd. Two inventors have staked competing claims to a potential audio revolution.

By Evan I. Schwartz

History is replete with rival inventors battling one another to bring breakthrough creations to market: Howe and Singer over the sewing machine, Bell and Gray over the telephone, Edison and Swan over the light bulb. In many cases, the winner went on to become a household name and captain of industry, while the loser was essentially forgotten.

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