ITU-T Recommendation database

Search by number:

Others:

Study Groups tree view

ITU-T P.863.2 (05/2024)

将ITU-T P.863对电话话音信号降级的多维评估扩展到全频段

ITU-T P.863.2建议书描述了一套用于预测从窄带（300至3 400 Hz）到全频段（20至20 000 Hz）电信场景与总体语音质量相关的劣化感知维度模型。预测的目标是用户对四个感知维度的判断，这些维度是在附件A所述的主观测试中获得的。ITU-T P.863.2建议书描述的模型部分基于ITU-T P.863建议书给出的模型内部参数。ITU-T P.863.2建议书详细介绍了ITU-T P.863建议书未包含的所有模型部件。附件B中还规定了一致性测试程序，以允许用户验证模型的替代实施是否正确。

Citation:	https://handle.itu.int/11.1002/1000/15942
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:	2024-05-29
Provisional name:	P.AMD
Approval process:	AAP
Status:	In force
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1	P.863.2 (07/2022)	Superseded	here	here	here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

Connecting the world and beyond

ITU-T Recommendations

ITU-T P.863.2 (05/2024)