IEC 60268-4 : 5.0已作废
SOUND SYSTEM EQUIPMENT - PART 4: MICROPHONES
出版：International Electrotechnical Committee
专家解读视频
Defines methods of measurement for the electrical impedance, sensitivity, directional response pattern, dynamic range and external influences of sound system microphones, and also details the characteristics to be specified by the manufacturer.
NEN EN IEC 60268-4 : 2014 - Identical
UNE EN 60268-4 : 2014 - Identical
DIN EN 60268-4 : 2016 - Identical
PN EN 60268-4 : 2014 - Identical
BIS IS 15596-4 : 2016 - Identical
CEI EN 60268-4 : 2015 - Identical
DS EN 60268-4 : 2014 - Identical
BS EN 60268-4 : 2014 - Identical
SAC GB/T 12060-4 : 2012 - Identical
