IEC 62585:2012 provides information on the corrections required over a range of frequencies in order for a periodic test of a sound level meter to be performed according to IEC 61672-3. These corrections include; corrections for the typical effects of ref
DS/EN 62585:2013 history
2013DS/EN 62585:2013 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter