| 摘要 |
<p>A composite wallboard (300) (and system when attached to an existing wall) is disclosed. The composite wallboard has a plasterboard layer (308), an insulation layer (306) and a perforated board layer 302. It is preferred that the perforated board layer be attached to an existing wall (102). The insulation layer attaches the plasterboard layer to the perforated board layer while at the same time decoupling these two. Where the composite wallboard is attached to a typical stud wall, Helmholtz resonators (600) can be defined. This increases the low frequency sound absorption of a wall system (400) that uses the composite wallboard. Installing a wall system that includes the composite wallboard is a single-step process, which saves a great deal of labor relative to the use of resilient channel.</p> |
