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SDG

Question 9

Perceptual-based objective methods for voice, audio and visual quality measurements in telecommunication services

(Continuation of Question 9/12 - Perceptual-based objective methods for voice, audio and visual quality measurements in telecommunication services)

Motivation
The work of this Question will focus on objective, perceptual and mainly signal-based methods for evaluating quality parameters in telecommunication scenarios. Primarily, the methods under study should concentrate on user-perceived quality characteristics. Consequently, these methods and algorithms include perceptual approaches. They model results and procedures, which are applicable in subjective tests. So that subjective procedures will get an objective counterpart by using the same scaling and basic procedures.

An example for that is the successful standardization of Recommendations P.862, P.862.1, P.862.2, P.862.3 and the P.863, perceptual based methods those models objectively Listening Only Tests with Absolute Category Rating for the evaluating of the Listening Speech Quality according to Recommendation P.800. A no-reference counterpart of P.862 was approved as P.563.

This Question will extend the objective evaluation of Listening Quality – the main issue up to now – to other quality aspects of voice telephony like talking quality and wideband / super-wideband / fullband speech, including perceptual, signal-based models for objective rating of multi-channel and spatial audio in telecommunication services. Under consideration of new generation telecommunication services, also other media than speech like music and video as well as the prediction of perception of audio-video synchronization should be taken into account.

Furthermore, the evaluation of transmitted noise – especially after processing by noise suppression systems – should be covered by the work of this Question, the same as objective prediction of speech intelligibility. This Question analyses and recommends also methods, metrics and procedures for statistical evaluation, qualification and comparison of objective quality prediction models.

This Question will also continue and finalize the ongoing work on P.ONRA, P.AMD and P.SPELQ.
The following Recommendations, in force at the time of approval of this Question, fall under its responsibility:
P.563, P.862, P.862.1, P.862.2, P.862.3, P.863, P.863.1, P.1401

Question
Study items to be considered include, but are not limited to:
Tasks
Tasks include, but are not limited to: An up-to-date status of work under this Question is contained in the SG12 work programme
http://www.itu.int/ITU-T/workprog/wp_search.aspx?q=9/12 

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