Ordinary residential wall, with two sides of the Etiet board folder sandwich cotton to do, the sound effect? Is it better than a solid brick wall?
Sound insulation depends on how many decibels you want.
The construction team's program does have sound insulation, but non-audio professionals use the materials and technology can not guarantee.
This structure, just in the middle of the keel on both sides of the board plus a layer of quiet treasure sound insulation, sound insulation effect will be much better than ordinary 24cm brick wall, especially in the low-frequency part.
Ette board has a different density and thickness, if you want to sound insulation is good, try to choose the density, thick some of the board;