ISO/IEC 23003-1:2007/COR4:2012 is a corrigendum to the MPEG audio technologies document for MPEG Surround, identifying a technical correction linked to the parent reference. For teams using ISO/IEC 23003-1:2007/COR4:2012 in engineering documentation, test planning, or procurement review, the corrigendum helps ensure the corrected text is applied consistently in technical assessment and compliance workflows. It is relevant where accurate interpretation of the MPEG Surround specification supports documented evaluation and controlled implementation decisions.

ISO/IEC 23003-1:2007/COR4:2012 standard overview

As a Technical Corrigendum to Part 1 of ISO/IEC 23003, this document serves as a supporting corrective reference rather than a standalone technical specification. It is tied to Information technology - MPEG audio technologies - Part 1: MPEG Surround - Technical Corrigendum 4, and is intended to clarify or correct the parent text for more reliable use in engineering and conformity assessment activities. In practice, it may be consulted during technical review, verification activities, and document control to maintain alignment with the corrected wording.

Applications of ISO/IEC 23003-1:2007/COR4:2012

Organizations working with MPEG Surround implementations may use ISO/IEC 23003-1:2007/COR4:2012 when reviewing product documentation, validating decoder or encoder behavior, or checking whether test material and engineering specifications reflect the corrected text. It can support laboratory evaluation, system integration, and procurement checks where the parent document is referenced in compliance workflows. The corrigendum is also useful for quality workflows that depend on operational consistency between design records, verification results, and technical compliance files.

Why ISO/IEC 23003-1:2007/COR4:2012 matters

Corrective documents such as ISO/IEC 23003-1:2007/COR4:2012 matter because small wording changes can affect interpretation, test execution, and conformity assessment outcomes. Using the corrected reference can reduce risk during technical validation, especially where product evaluation depends on precise alignment with MPEG Surround requirements. For procurement and compliance teams, it provides a clearer basis for reviewing engineering documentation, confirming implementation assumptions, and supporting repeatable assessment across development and acceptance workflows.

• Corrigendum linked to ISO/IEC 23003, not a standalone primary standard
• Supports corrected interpretation of MPEG Surround technical text
• Useful for verification, laboratory evaluation, and controlled document review
• Helps maintain consistency in compliance preparation and technical validation