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Scientific American

October 1, 1998

1 min read

In the Audio Spotlight

A sonar technique allows loudspeakers to deliver focused sound beams

By David Schneider

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This article was originally published with the title “In the Audio Spotlight” in Scientific American Magazine Vol. 279 No. 4 (October 1998), p. 40
doi:10.1038/scientificamerican1098-40

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