ITU-T SERIES P SUPP 26-2017 Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality (Study Group 12).pdf
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1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T Series P TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 26 (09/2017) SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Scenarios for the subjective evaluation of audio and au
2、diovisual multiparty telemeeting quality ITU-T P-series Recommendations Supplement 26 ITU-T P-SERIES RECOMMENDATIONS TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Vocabulary and effects of transmission parameters on customer opinion of transmission quality Series P.10
3、Voice terminal characteristics Series P.30 P.300 Reference systems Series P.40 Objective measuring apparatus Series P.50 P.500 Objective electro-acoustical measurements Series P.60 Measurements related to speech loudness Series P.70 Methods for objective and subjective assessment of speech quality S
4、eries P.80 Methods for objective and subjective assessment of speech and video quality Series P.800 Audiovisual quality in multimedia services Series P.900 Transmission performance and QoS aspects of IP end-points Series P.1000 Communications involving vehicles Series P.1100 Models and tools for qua
5、lity assessment of streamed media Series P.1200 Telemeeting assessment Series P.1300 Statistical analysis, evaluation and reporting guidelines of quality measurements Series P.1400 Methods for objective and subjective assessment of quality of services other than speech and video Series P.1500 For fu
6、rther details, please refer to the list of ITU-T Recommendations. P series Supplement 26 (09/2017) i Supplement 26 to ITU-T P-series Recommendations Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality Summary Supplement 26 to ITU-T P-series of Recommendati
7、ons concerns subjective quality assessment of telemeeting systems that provide audio-only or audio-visual communication for multiple parties. The term multiple parties refers to more than two meeting participants who can be located at two, or more than two locations. Evaluation of these systems can
8、focus on audio-only, video-only or audio-visual quality aspects and non-interactive or conversational quality can be assessed. This Supplement provides example test scenarios that can be used to conduct conversation tests for multiparty audio-only telemeetings. History Edition Recommendation Approva
9、l Study Group Unique ID* 1.0 ITU-T P Suppl. 26 2012-06-07 12 11.1002/1000/11720 2.0 ITU-T P Suppl. 26 2017-09-28 12 11.1002/1000/13392 Keywords Audio-only, conversation test scenarios, multiparty. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web bro
10、wser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii P series Supplement 26 (09/2017) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communic
11、ation technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The W
12、orld Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1.
13、In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recogn
14、ized operating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the publication is achieved when all of these mandatory provisions are met. The words “shal
15、l“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the publication is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practic
16、e or implementation of this publication may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the publication development pro
17、cess. As of the date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urg
18、ed to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. P series Supplement 26 (09/2017) iii Table of Contents Page 1 Scope . 1 2 Referenc
19、es . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 1 4 Abbreviations and acronyms 1 5 Conventions 2 6 Three-party conversation test scenarios 2 7 German examples of three-party conversation test scenarios . 3 7.1 Symbole 3 7.2 Trainings-Szenario . 4 7.3 T
20、est-Szenarien 8 8 English examples of three-party conversation test scenarios . 48 8.1 Symbols 48 8.2 Training Scenario . 49 9 French examples of three-party conversation test scenarios 93 9.1 Symboles 93 9.2 Scnario dentrainement 94 9.3 Scnarios de test . 98 Bibliography. 138 P series Supplement 26
21、 (09/2017) 1 Supplement 26 to ITU-T P-series Recommendations Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality 1 Scope This Supplement concerns subjective quality assessment of telemeeting systems that provide communication between multiple parties at di
22、stant locations. As multiparty telemeetings can differ in a large number of aspects, the assessment of such systems requires proper selection and control of the considered aspects and a precise description when reporting results. Recommendation ITU-T P.1301 provides guidelines to select and, if nece
23、ssary, adapt existing methods for subjective evaluation of multiparty telemeetings. Concerning the evaluation of conversational quality of multiparty telemeetings, ITU-T P.1301 also provides descriptions of conversation tasks. This Supplement complements these with example scenarios for conversation
24、 test scenarios for three parties. 2 References ITU-T P.1301 Recommendation ITU-T P.1301 (2017), Subjective quality evaluation of audio and audiovisual multiparty telemeetings. 3 Definitions 3.1 Terms defined elsewhere None. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms
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