BS EN ISO 140-4:1998现行
Acoustics. Measurement of sound insulation in buildings and of building elements. Field measurements of airborne sound insulation between rooms
出版：British Standards Institution
专家解读视频
Applies to sound insulation within a pair of rooms. Determines the steady state (sup)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.
© British Standards Institution 2013
ISO 140-4:1998 - Identical
SS EN ISO 140-4 Ed. 1 (1999) - Identical
UNI EN ISO 140-4:2000 - Identical
UNE EN ISO 140-4:1999 - Identical
NS EN ISO 140-4 Ed. 1 (1999) - Identical
I.S. EN ISO 140-4:1999 - Identical
NBN EN ISO 140-4:1998 - Identical
NF EN ISO 140-4:1998 - Identical
ONORM EN ISO 140-4:1999 - Identical
DIN EN ISO 140-4 (1998-12) - Identical
NEN EN ISO 140-4:1998 - Identical
SN EN ISO 140-4:1998 - Identical
