ITU-R BS.2168 (02/2025)

Recommendation ITU-R BS.2168-0
Policy on Intellectual Property Right (IPR)
Annex 1 Advanced sound system: ADM and S-ADM profile for emission
1 Introduction
2 Profile on the audioFormatExtended element
2.1 Requirements on the audioFormatExtended element
2.1.1 General requirements
2.1.2 audioFormatExtended attribute and sub-element requirements
2.1.3 audioProgramme attribute and sub-element requirements
2.1.4 audioContent attribute and sub-element requirements
2.1.5 audioObject attribute and sub-element requirements
2.1.6 audioPackFormat attribute and sub-element requirements
2.1.7 audioChannelFormat attribute and sub-element requirements
2.1.8 audioBlockFormat attribute and sub-element requirements
2.1.9 audioTrackUID attribute and sub-element requirements
2.1.10 profileList sub-element requirements
2.2 Use of IDs
2.2.1 audioProgramme, audioObject, alternativeValueSet
2.2.2 audioContent
2.2.3 audioPackFormat, audioChannelFormat, audioBlockFormat
2.2.4 audioTrackUID
2.3 Profile Levels
2.3.1 Level 0
2.3.2 Level 1
2.3.3 Level 2
2.3.4 Calculating MAX_GROUP_COMP
2.3.5 Calculating MAX_TRACK_NON_COMP
2.3.6 Calculating MAX_GROUP_INDEP limits
2.4 Downmix matrices
3 Location of audioFormatExtended element when S-ADM is not used
4 Profile recommendations on the frame element in S-ADM
4.1 Requirements on the frame element
4.1.1 General requirements
4.1.2 frame attribute and sub-element requirements
4.1.3 frameHeader attribute and sub-element requirements
4.1.4 frameFormat attribute and sub-element requirements
4.1.5 transportTrackFormat attribute and sub-element requirements
4.1.6 audioTrack attribute and sub-element requirements
4.1.7 profileList attribute and sub-element requirements
5 Bibliography
Attachment 1 to Annex 1 (informative)
1 Topology options

This Recommendation specifies requirements, recommendations, and constraints for the use of Audio definition model (ADM) (Recommendation ITU-R BS.2076) and serial representation of audio definition model (S-ADM) (Recommendation ITU-R BS.2125) metadata.