IEC 61672-1 : 2010现行

Provides electroacoustical performance specifications for three kinds of sound measuring instruments: a) a time-weighting sound level meter that measures exponential-time-weighted, frequency weighted sound levels; b) an integrating-averaging sound level meter that measures time-averaged, frequency weighted sound levels; and c) an integrating sound level meter that measures frequency-weighted sound exposure levels.

NEN EN IEC 61672-1 : 2014 - Identical

BIS IS 15575-1 : 2016 - Identical

SANS 61672-1 : 1ED 2003 - Identical

DIN EN 61672-1 : 2014 - Identical

BS EN 61672-1 : 2013 - Identical

CEI EN 61672-1 : 2014 - Identical

PN EN 61672-1 : 2014 - Identical

DS EN 61672-1 : 2014 - Identical

I.S. EN 61672-1:2013 - Identical