EN 61265:1995
電聲學.航空噪聲測量儀器.在運輸機噪聲鑒定中測量三分之一帶寬倍頻聲壓級裝置的性能要求(IEC 1265-1995)
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