Building`s e.g. office, sound absorption device, has rear wall arranged parallel to surface unit and to limit absorption space which is filled with absorption material e.g. wood, gypsum and cardboard, for absorption of sound waves
摘要
<p>The device has a surface unit (2) provided with multiple recesses (3) and a rear wall (4) arranged parallel to the surface unit. The rear wall limits an absorption space (5) which is filled with an absorption material (6) e.g. wood, gypsum and cardboard, for absorption of sound waves. The recesses are extended between adjacent and opposite side edges of the surface unit and over entire breadth of the surface unit.</p>
