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1 Motivation
Multimedia evolution leads to an increase of the audio signal bandwidth as well as spatial audio in the new generation networks. Beside the existing narrowband and wideband, super-wideband as well as fullband is being developed for the next years. Also, telecommunication is moving from monaural towards binaural as well as immersive audio.
This situation brings new challenges in terms of standardization which need to be covered. The emerging of immersive audio leads to a need of harmonization of the algorithms aiming to calculate loudness ratings and loudness.
The following major deliverables, in force at the time of approval of this Question, fall under its responsibility: P.16, P.32, P.48, P.51, P.52, P.53, P.54, P.55, P.57, P.58, P.61, P.64, P.75, P.76, P.78, P.79, P.350, P.360, P.370, P.380, P.570, P.581, P.700, P-series Suppls 10, 16, 20.
2 Question
Study items to be considered include, but are not limited to:
- What enhancements in existing Recommendations need to be defined to accommodate for the evolution in immersive audio?
- What new Recommendations are required to address changes in user behaviour or user interaction with regards to new measurement methodologies?
- What new measurement setups are required to support extended reality applications (augmented reality, virtual reality, mixed reality) in related devices?
3 Tasks
Tasks include, but are not limited to:
- Examine if the "non-standardise" handset positions used during a conversation could form the basis for a study which potentially could accommodate an extended range of new test position complementary to those specified in P.64.
- Extending the Type 4 Ear Simulator family with Type 4.1 and Type 4.2 Ear Simulator types.
- Improvement of the specifications for acoustic frontends, mainly artificial ears, to better match the measurement needs for immersive audio.
- Investigate different geometries of HATS as alternatives to the current geometry of HATS specified by P.58. The geometries should be considered for certain application. Specifically different geometries of the head and pinnae should be investigated.
- Investigate how to aggregate measurements from multiple test positions into an overall measure of transmission performance. This is intended to address the situation that users are holding and positioning communication devices in many ways.
- Investigate measurement setups for devices that make use of bone conducting technology.
- Investigate measurement setups for wearable devices e.g., smart watches.
- Investigate possible simulation of the human behaviour with regards to movements when using communication devices in real life situations. This is relevant for all types of communication devices e.g., handset, headset and handsfree.
- Investigate the directivity as well as extended frequency range of the artificial mouth, aiming to revise Recommendation P.58 as well as P.51. The investigation should also include performance behind the lip-plane of humans.
- Maintenance of Recommendations that fall under the responsibility of the Question.
An up-to-date status of work under this Question is contained in the SG12 work programme at https://itu.int/ITU-T/workprog/wp_search.aspx?sp=18&q=5/12.
4 Relationships
Recommendations:
- P.1100 series
Questions:
- 4/12, 6/12, 7/12, 10/12
Study groups:
- ITU-T SG21
Other bodies:
- 3GPP SA4, CENELEC, ETSI TC STQ, IEC TC 29, IEEE CEA
WSIS Action Lines:
- C2
Sustainable Development Goals:
- 9
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