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ITU-T P.863.2 (07/2022)

Extension of ITU-T P.863 for multi-dimensional assessment of degradations in telephony speech signals up to full-band

Recommendation ITU-T P.863.2 describes a set of models for predicting perceptual dimensions of degradations linked to the overall speech quality from narrowband (300 to 3 400 Hz) to fullband (20 to 20 000 Hz) telecommunication scenarios. The predictions target user judgements on four perceptual dimensions, as obtained in a subjective test described in an annex.
The models described in Recommendation ITU-T P.863.2 are partially based on internal parameters of the model given in Recommendation ITU-T P.863. Recommendation ITU-T P.863.2 presents a detailed description of all model parts that are not contained in Recommendation ITU-T P.863. A conformity testing procedure is also specified in an annex to allow a user to validate whether an alternative implementation of the models is correct.

Citation:	https://handle.itu.int/11.1002/1000/15010
Series title:	P series: Telephone transmission quality, telephone installations, local line networks P.800-P.899: Methods for objective and subjective assessment of speech and video quality
Approval date:	2022-07-29
Provisional name:	P.AMD
Approval process:	AAP
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 12
Further details:	Patent statement(s) Development history Associated test signals

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
2	P.863.2 (05/2024)	In force	here	here	here
1	P.863.2 (07/2022)	Superseded	here	here	here


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
P Suppl. 10 (11/1988)	Considerations relating to transmission characteristics for analogue handset telephones	In force	-	here	here
P Suppl. 16 (11/1988)	Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)	In force	-	here	here
P Suppl. 20 (03/1993)	Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses	In force	-	here	here
P Suppl. 23 (02/1998)	ITU-T coded-speech database	In force	here	here	here
P Suppl. 24 (10/2005)	Parameters describing the interaction with spoken dialogue systems	In force	here	here	here
P Suppl. 25 (01/2011)	Parameters describing the interaction with multimodal dialogue systems	In force	here	here	here
P Suppl. 26 (09/2017)	Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality	In force	here	here	here
P Suppl. 27 (01/2017)	Application of ITU-T P.863 and ITU-T P.863.1 for speech processed by blind bandwidth extension approaches	In force	here	here	here
P Suppl. 28 (09/2020)	Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12	In force	here	here	here
P Suppl. 29 (01/2023)	ITU-T P.800 – Use cases	In force	here	here	here
P Suppl. 31 (01/2025)	Subjective quality evaluation of audiovisual communication in videotelephony services	In force	here	here	here

Title	Approved on	Download
Practical procedures for subjective testing	2011	here
Addition to Section 2.3 of the Handbook on Telephonometry	2000	here
Addition to Section 3 of the Handbook on Telephonometry	2000	here
Additions to the Handbook on Telephonometry	1999	here
Telephonometry	1992	here

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ITU-T Recommendations

ITU-T P.863.2 (07/2022)