# ISO/IEC 23003-3:2012 — Withdrawn and superseded ISO standards

For ISO/IEC 23003-3:2012, item title is Information technology — MPEG audio technologies — Part 3: Unified speech and audio coding; status code is 9599; successor is ISO/IEC 23003-3:2020; withdrawn / published date is 2012-03-23, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 23003-3:2012 _(verified: appears in the quote below)_
- **Item title:** Information technology — MPEG audio technologies — Part 3: Unified speech and audio coding _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 23003-3:2020
- **Withdrawn / published date:** 2012-03-23 _(verified: appears in the quote below)_

## What the source says

> 57464,IS,,ISO/IEC 23003-3:2012,Information technology — MPEG audio technologies — Part 3: Unified speech and audio coding,Technologies de l'information — Technologies audio MPEG — Partie 3: Discours unifié et codage audio,2012-03-23,1,['35.040.40'],ISO/IEC JTC 1/SC 29,9599,,[76385],['en'],278,"<p>ISO/IEC 23003-3:2012 specifies a unified speech and audio codec which is capable of coding signals having an arbitrary mix of speech and audio content. The codec has a performance comparable to or better than the best known coding technology that might be tailored specifically to coding of either speech or general audio content. The codec supports single and multi-channel coding at high bitrates and

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).