Abstract
The prediction of noise levels in living and working spaces is of considerable importance in the architectural design of buildings. Two charts have been developed which simplify the tedious process of calculating the level of noise entering a room through walls, floor, and ceiling from both interior and exterior sources. The use of published transmission loss and sound-absorption data with the charts and some simple data forms allow the rapid estimation of interior noise levels without resort to slide rule or log tables. Accuracy is commensurate with one's ability to determine criteria for background noise in the spaces under consideration.
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