Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction under direct sound field; German version EN 16272-4:2016— 40 стр.
Electroacoustic - Equipment for the measurement of real-ear acoustical characterics of hearing aids (IEC 61669:2001); German version EN 61669:2001— 21 стр.
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 61265:1995— 11 стр.
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound reflection under direct sound field conditions; German version EN 1793-5:2016— 66 стр.
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound reflection under direct sound field conditions; German version EN 1793-5:2016+AC:2018— 65 стр.
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 6: Intrinsic characteristics - In situ values of airborne sound insulation under direct sound field conditions; German version EN 1793-6:2018— 50 стр.
