Logarithmic quantities and units
Edition 2013-10

Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics (IEC 60027-2:2019); German version EN IEC 60027-2:2019
Edition 2023-02

Letter symbols to be used in electrical technology - Part 3: Logarithmic quantities (IEC 25/524/CD:2015)
Edition 2015-08

Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units (IEC 60027-3:2002); German version EN 60027-3:2007
Edition 2007-11

Transmissionsystems and twoports; concepts and quantities
Edition 1978-11

Noise level measurement in sound systems
Edition 1983-11

Transmission systems and two-ports; measures for attenuation
Edition 1971-11

Quantities
Edition 1998-12

Electroacoustics - Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique (IEC 61094-3:2016 + COR1:2016); German version EN 61094-3:2016 + AC:2017-01
Edition 2017-04

Methods of measurement for waveguides - Part 4: Attenuation of waveguide and waveguide assemblies (IEC 61580-4:1997); German version EN 61580-4:1998
Edition 1999-07