ABSTRACT
In many situations it is necessary to place an enclosure around a noise source or place a barrier between the noise source and the observer. To understand how to design an enclosure, it is necessary to understand sound transmission through enclosure walls and this is where this chapter will begin. Following the discussion of sound transmission through single and double walls, enclosure and barrier design is considered. Pipe lagging is discussed in Bies and Hansen (2003) and will not be considered here.
