Sleep glossary
decibel
Updated
In sleep products, decibels appear around volume, earplugs, sound machines, and noise reduction.
Plain-English definition
A decibel is a unit used to describe sound level.
In sleep products, decibels appear around volume, earplugs, sound machines, and noise reduction.
Why it matters
Numbers can help comparisons, but perceived comfort and safe volume still matter.
Buying relevance
Use this term as a practical buying clue, then check the current manufacturer wording, setup guidance, materials, and returns policy. It should not be treated as a medical claim or a guarantee of how a product will work for you.
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