DIN EN 61265:1999 电声学.飞行器噪音测量仪器.运输类飞机噪音审定时测量三分之一倍频程声压水平使用的系统性能要求
Electroacoustics - Instruments for measurement of aircraft noise - Performance requirements for systems to measure one-third-octave band sound pressure levels in noise certification of transport-category aeroplanes (IEC 61265:1995); German version EN 6126