Revised
specifies methods of measurement for the electrical impedance, sensitivity, directional response pattern, dynamic range and external influences of sound system microphones, and also gives recommendations as to characteristics to be specified.
It applies to sound system microphones for all applications for speech and music
WITHDRAWN
IEC 60268-4:1997 ED2
WITHDRAWN
IEC 60268-4:2004 ED3
99.60
Withdrawal effective
Jun 28, 2010
WITHDRAWN
IEC 60268-4:2010 ED4