lydisolerte

Lydisolerte (lydisolerte in lowercase) is a term used in acoustics to describe spaces, assemblies, or products designed to minimize sound transmission between areas. It covers structures such as walls, floors, ceilings, doors, and enclosures, as well as devices like quiet HVAC covers or consumer electronics housings. The aim is to reduce noise leakage or intrusion.

Etymology: from Norwegian root lyd (sound) and isolere (to isolate); the term translates to sound-isolated or acoustically isolated. It is used in architectural, industrial, and consumer contexts.

Techniques to achieve lydisolerte environments include adding mass, using damping layers, decoupling structures (staggered or double stud walls), sealing gaps with acoustic sealant, creating airtight enclosures, and using resonant absorbers or impedance mismatches. The combination forms a system to reduce airborne and impact noise. Distinguish from interior acoustic treatment, which focuses on absorption inside a space rather than preventing transmission.

Applications and measurement: Common uses include recording studios, control rooms, hotel rooms, apartment buildings, and quiet machinery enclosures, as well as automotive and consumer electronics enclosures. Sound isolation performance is typically quantified by metrics such as STC (Sound Transmission Class) for airborne noise and IIC (Impact Isolation Class) for structure-borne noise, sometimes expressed as RW in European ratings. Real-world results depend on assembly integrity, material quality, and construction practices.