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This Document Has Been Superseded
A newer publication replaces it: BSI BS EN ISO 140-4
Measurement of sound insulation in buildings and of building elements -- Field measurements of airborne sound insulation between rooms
FIELD MEASUREMENTS OF AIRBORNE
Applies to sound insulation between a pair of rooms.
Determines the steady state 1/3 octave band filtered white noise level difference and the receiving room equivalent absorption area from which the standardized level difference is derived.
The results can be used to determine whether building elements have met acoustic specifications, e.g. Building Regulations.
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