Sleep glossary
passive noise reduction
Updated
Earplugs, earbud tips, and over-ear seals can all reduce some noise passively.
Plain-English definition
Passive noise reduction comes from physical blocking or sealing rather than electronic cancellation.
Earplugs, earbud tips, and over-ear seals can all reduce some noise passively.
Why it matters
For sleep, passive comfort may matter more than headline technology.
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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