As discussed previously, effective treatments exist for abating noise generated by a source, along a particular path, or in the receiver space. Different treatments may be needed to reduce airborne sources, structure-borne sources, airborne paths, structure-borne paths, HVAC induced noise, etc. Each treatment type depends on an understanding of the prevailing airborne or structure-borne noise components. Generic treatments used to abate shipboard noise are discussed in the following sections.