# ISO/IEC 23003-4:2020/Amd 2:2023 — Withdrawn and superseded ISO standards

For ISO/IEC 23003-4:2020/Amd 2:2023, item title is Information technology — MPEG audio technologies — Part 4: Dynamic range control — Amendment 2: Loudness leveling; status code is 9599; successor is ISO/IEC 23003-4:2025; withdrawn / published date is 2023-10-16, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 23003-4:2020/Amd 2:2023 _(verified: appears in the quote below)_
- **Item title:** Information technology — MPEG audio technologies — Part 4: Dynamic range control — Amendment 2: Loudness leveling _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 23003-4:2025
- **Withdrawn / published date:** 2023-10-16 _(verified: appears in the quote below)_

## What the source says

> 85290,IS,Amd,ISO/IEC 23003-4:2020/Amd 2:2023,Information technology — MPEG audio technologies — Part 4: Dynamic range control — Amendment 2: Loudness leveling,Technologies de l'information — Technologies audio MPEG — Partie 4: Contrôle de gamme dynamique — Amendement 2: Égalisation de l’intensité sonore,2023-10-16,2,['35.040.40'],ISO/IEC JTC 1/SC 29,9599,,[89036],['en'],14,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).