ABSTRACT
Enclosures are sound insulating structures designed for the total containment or exclusion of a sound field. They may also incorporate sound absorbents to further modify the internal sound field. Their primary function will be to provide a form of encapsulation which has a high sound insulating performance around a noise source. Alternatively, they may be required to provide a quiet enclosure within a high intensity sound field. The design of acoustic enclosures will often entail a basic understanding of structural engineering and building technology. They may be permanent structures fabricated from conventional building materials, or small hoods made from specialist
modular sound insulating panels. Large enclosures usually function acoustically in accordance with the standard laws relating to room acoustics and sound insulation and include such applications as engine test cells, mechanical equipment rooms, quiet refuges, etc.
