Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 12: Non-linear PCM bitstreams according to the DRA formats (IEC 61937-12:2010); German version EN 61937-12:2010
Edition 2011-01

Methods of measurement for equipment used in terrestrial radio-relay systems; simulated systems; measurement for f.d.m. transmission; identical with IEC 60487-3-4, edition 1982
Edition 1987-09

Methods of measurement for radio equipment used in satellite earth stations - Part 3: Methods of measurement on combinations of sub-systems; section 4: Measurements for frequency division multiplex (f.d.m.) transmission (IEC 60510-3-4:1992); German version EN 60510-3-4:1994
Edition 1994-09

Ergonomics - Assessment of speech communication (ISO 9921:2003); German version EN ISO 9921:2003
Edition 2004-02

Frame relay services - Part 2: Integrated Services Digital Network (ISDN); frame relay bearer service; service definition; English version ETS 300399-2:1995
Edition 1995-10

Multichannel digital audio tape recorder (DATR), reel-to-reel system, for professional use - Part 3: 24 bit operation for 16-bit media (IEC 61595-3:1999); German version EN 61595-3:1999
Edition 2000-05

Acoustics - Methods for calculating loudness - Part 1: Zwicker method (ISO 532-1:2017, Corrected version 2017-11)
Edition 2022-03

Optical amplifiers - Part 4: Multichannel applications - Performance specification template (IEC 61291-4:2011); German version EN 61291-4:2012
Edition 2012-09

Non-destructive testing - Characterization and verification of ultrasonic test equipment - Part 3: Combined equipment (ISO 22232-3:2020); German version EN ISO 22232-3:2020
Edition 2021-09

Acoustics - Measurement of sound absorption properties of road surfaces in situ - Part 2: Spot method for reflective surfaces (ISO 13472-2:2010)
Edition 2010-12