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#1 Federal
What's a Decibel?
- Organization: Department of Transportation
- Updated: 2020-11-17
dBs measure sound. Every day the sounds we hear usually fall between 0dB (the faintest detectable noise) and 120dB (a thunderclap). dBs are special units used to represent significant differences...

Search relevance: 1.00 | Views last month: 0 | Published on: 2026-02-05

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What's a Decibel?