A/342 Part 1, “Audio Common Elements”Approved: 14 April 2026

This document specifies the common framework for ATSC 3.0 Audio. It is intended to be used in conjunction with the specific audio technologies described in subsequent parts of this Standard. The ATSC 3.0 audio system provides immersive and personalizable sound for television. It is not compatible with the audio system used in ATSC 1.0 service.

Download current version: A/342:2026-04 Part 1, “Audio Common Elements”, 14 April 2026. This version of the Standard is normatively referenced in A/300:2026-04.

Previous Versions

There are multiple versions of this document. Please be sure to download the desired version. For amendments, the text includes a list of changes, the rationale for the changes, and compatibility considerations. The following documents are listed by date, with the most recent first.

2025

Download A/342:2025-07 Part 1, “Audio Common Elements”, 17 July 2025. This version of the Standard is normatively referenced in A/300:2025-07.

2024

Download A/342:2024-04 Part 1, “Audio Common Elements”, 3 April 2024. This version of the Standard is normatively referenced in A/300:2024-04.

2023

Download A/342:2023-03 Part 1, “Audio Common Elements”, 28 March 2023. This version of the Standard is normatively referenced in A/300:2023-03.

2022

Download A/342:2022-03 Part 1, “Audio Common Elements”, 31 March 2022. This version of the Standard is normatively referenced in A/300:2022-04.

2021

Download A/342:2021 Part 1, “Audio Common Elements”, approved 9 March 2021. This version of the Standard is normatively referenced in A/300:2021.

2017

Download A/342:2017 Part 1, “Audio Common Elements”, approved 24 January 2017. This version of the Standard is normatively referenced in A/300:2019 and A/300:2020.