CEN/TC 211

Registration number (WIID)Project No.TitleStatus
9730EN 21680-1:1991Acoustics - Test code for the measurement of airborne noise emitted by rotating electrical machinery - Part 1: Engineering methods for free-field conditions over a reflecting plane (ISO 1680-1:1986)Atcelts
9729EN 28798:1991Acoustics - Reference levels for narrow-band masking noise (ISO 8798:1987)Atcelts
9727EN 27029:1991Acoustics - Threshold of hearing by air conduction as a function of age and sex for otologically normal persons (ISO 7029:1984)Atcelts
9824EN ISO 11688-1:1998/AC:1998Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1: Planning (ISO/TR 11688-1:1995)Atcelts
9770EN ISO 4869-4:2000Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs (ISO/TR 4869-4:1998)Atcelts
9789EN ISO 3741:1999Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms (ISO 3741:1999)Atcelts
9743EN 25135:1991Acoustics - Determination of sound power levels of noise from air terminal devices, high/low velocity/pressure assemblies, dampers and valves by measurement in a reverberation room (ISO 5135:1984)Atcelts
32569EN ISO 3746:2009Acoustics - Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:1995, including Cor 1:1995)Atcelts
21073EN ISO 3741:1999/AC:2002Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms (ISO 3741:1999)Atcelts
9779EN ISO 9614-3:2002Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)Atcelts
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