No. 04 of 10 · Sleep Environment Features
Quiet room
Methods to reduce sound pressure
- Type
- Subclass of: insulation (criterion used: sound) · Source · 2026-10-20
- Field
- Unknown
- Equipment
- Unknown
- Format
- Unknown
- Source
- https://commons.wikimedia.org/wiki/File:Consumer_Reports_-_product_testing_-_headphones_in_anechoic_chamber.tif
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