(Continuation of Question 5/12) Motivation
Multimedia evolution leads to an increase of the audio signal bandwidth in
the New Generation Networks. Beside the existing NarrowBand and WideBand, a
FullBand is being developped for next years.
This situation brings new challenges in terms of standardization which need
to be covered during the next study period.
The extension of the bandwidth also leads to a need of the harmonization of the
algorithms aiming to calculate Loudness Ratings for all wide-bands from
NarrowBand to Full Band audio signals.
The following Recommendations, 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.360, P.380, P.Sup20
Question
Study items to be considered include, but are not limited to:
- What enhancements in the existing Recommendations P.57, P.58, P.51 and P.79
need to be defined in order to accommodate for the evolution in the frequency
range of audio transmissions?
- Considerations on how to help measure and mitigate climate change.
Tasks
Tasks include, but are not limited to:
- Development of an algorithm aiming to calculate Loudness Ratings for all
wide-bands from NarrowBand to Full Band audio signals aiming to revise
Recommendation P.79.
- Improvement of the acoustic frontends, mainly artificial ears, in order to
better match this extended frequency range, aiming to revise Recommendation P.57
and P.58.
- Investigation of the directivity of the artificial mouth, aiming to revise
Recommendation P.51.
- Development of artificial noise-fields in laboratory conditions. This task
could be a joint activity with Question 6/12.
- Clarification of the applicability of ERP/DRP and free field/diffuse field
corrections.
An up-to-date status of work under this Question is contained in the SG 12
Work Programme
http://www.itu.int/ITU-T/workprog/wp_search.aspx?isn_sp=545&isn_sg=551
Relationships
Recommendations: P.300 series
Questions: 3/12, 4/12 and 6/12
Standardization bodies: IEEE / TIA, ETSI, IEC TC 29, 3GPP |