Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index (IEC 60268-16:2020); German version EN IEC 60268-16:2020
Edition 2021-10

Non-broadcast video tape recorders - Methods of measurement - Part 1: General video (NTSC/PAL) and audio (longitudinal) characteristics (IEC 61041-1:1990); German version EN 61041-1:1995
Edition 1996-06

Recommended methods of measurement on receivers for television broadcast transmissions; part 6: measurement under conditions different from broadcast signal standards; identical with IEC 60107-6:1989; german version HD 567.6 S1:1990
Edition 1991-12

Methods of measurement for radio equipment used in satellite earth stations - Part 2: Measurements for sub-systems; section 5: Frequency demodulators (IEC 60510-2-6:1992); German version EN 60510-2-6:1994
Edition 1994-09

Distortion test record St 33 and St 45 (33¹/₃ or 45 rev/min; stereo)
Edition 1969-02

Non-destructive testing - Radioscopic testing - Part 2: Check of long term stability of imaging devices; German version EN 13068-2:1999
Edition 2000-02

Methods of measurement for radio transmitters; part 3: wanted and unwanted modulation
Edition 1982-11

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

Communication systems for meters - Part 8: Adaptation layer; German version EN 13757-8:2023
Edition 2025-01

Non-destructive testing - Image quality of radiographs - Part 5: Determination of the image unsharpness and basic spatial resolution value using duplex wire-type image quality indicators (ISO 19232-5:2018); German version EN ISO 19232-5:2018
Edition 2018-12