The volume varies depending on the material
Dec 19, 2018

The sound insulation of a single layer of uniform dense wall plate obeys the "law of sound insulation quality " of architectural acoustics, that is, the amount of sound insulation is proportional to the weight of the unit area of the component, and the surface density increases every times, and the volume is increased by about 4~5db.

When sound waves are projected on the wall plate, the heavy wall is not easy to excite vibration than the light wall, and the low frequency ratio is easy to excite vibration, so the heavy wall is better soundproof than the light wall, and the high frequency is better than the low frequency soundproofing. The surface density of lightweight partitions is limited, in order to improve their soundproofing, the application of double-layer or multi-layer composite structure.

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