2006 - Volume #30, Issue #2, Page #35
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High-Tech Earplugs Let You Hear People Talk
Here's a new hearing device that blocks big machinery noise yet still lets you hear people clearly.
  The Zwislocki Ear Muffler (ZEM) weighs only a couple of ounces. "It uses principles of sound physics to reduce sound evenly across all frequencies," says Robert DiNardo, co-founder of Sensgard, noting that the hig..........


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2006 - Volume #30, Issue #2