Sleep glossary
active noise cancellation
Updated
It can be useful in some contexts, but it may add bulk, battery needs, and settings.
Plain-English definition
Active noise cancellation uses microphones and processing to reduce some external sound.
It can be useful in some contexts, but it may add bulk, battery needs, and settings.
Why it matters
Sleep shoppers should check pillow comfort, volume, battery life, and whether ANC is actually useful for their noise problem.
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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