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Technology@lemmy.worldEnglish · 7 months ago

Hearing is be-leafing: Students invent quieter leaf blower

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Hearing is be-leafing: Students invent quieter leaf blower

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Technology@lemmy.worldEnglish · 7 months ago

Patent-pending design by Hopkins undergrads could be available in stores within two years

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7 months ago
No, not the same … in your paragraph you describe an increase of the frequency at a level human hearing do not perceive while the other made cancellation of a given frequency using phase shifting and recombination.

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