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Abstract

This report assembles data on the sound power levels of various sources of interference, including studios and other technical areas, and on the permissible levels of noise in all parts of a studio centre. From these data, curves showing the required attenuation between sound sources and all types of broadcasting area are derived. As the shapes of the curves thus obtained do not in general agree with those realised by normal building practice, other curves are also drawn corresponding more closely in form with single- or double-layer partitions which provide equal or greater level reductions at all frequencies. The results are summarized in a design chart.

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