Abstract
Background sound is generally recognized as an important consideration in achieving acoustical privacy for open plan as well as enclosed offices. Too often in the design of multifamily structures little systematic attention is given to the background sound levels that will actually exist in the completed dwelling spaces and therefore the ultimate acoustical privacy that will be experienced by the occupants. A number of recent case histories have been examined in terms of the sound isolation rating (NIC or STC) and background sound level (dBA) versus satisfaction. This effort suggests criteria in terms of both STC and background sound levels are necessary to adequately predict occupant satisfaction.
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