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Soundproofing

Structures should not only protect from heat and cold; they should also reduce sound transmission, for example between an external sound source and residents indoors.

Good soundproofing is achieved by high density. Where differing component layers alternate, this may be of particular advantage with respect to mechanical vibration and impact sound, e.g. for floating floor screeds.

A distinction is made between

• airborne soundproofing and
• impact soundproofing.

Sound pressure is measured in decibel (dB).

Path of sound when it hits a body (source: Rockfon, adapted)