ITU-T P 806 AMD 1-2015 A subjective quality test methodology using multiple rating scales Amendment 1 New Appendix III C ITU-T P 806 test instructions in Chinese Mandarin (Study Gr.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 P.806 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1 (05/2015) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Methods for objective and subjective assessment of speech quality A subjective
2、quality test methodology using multiple rating scales Amendment 1: New Appendix III ITU-T P.806 test instructions in Chinese Mandarin Recommendation ITU-T P.806 Amendment 1 ITU-T P-SERIES RECOMMENDATIONS TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Vocabulary and effects of transmission
3、 parameters on customer opinion of transmission quality Series P.10 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
4、 Methods for objective and subjective assessment of speech quality Series P.80 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 quality assessment
5、 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 voice services Series P.1500 For further details, pl
6、ease refer to the list of ITU-T Recommendations. Rec. ITU-T P.806/Amd.1 (05/2015) i Recommendation ITU-T P.806 A subjective quality test methodology using multiple rating scales Amendment 1 New Appendix III ITU-T P.806 test instructions in Chinese Mandarin Summary Amendment 1 to Recommendation ITU-T
7、 P.806 (02/2014) introduces Appendix III. It includes ITU-T P.806 test instructions in Chinese Mandarin. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T P.806 2014-02-13 12 11.1002/1000/12125 1.1 ITU-T P.806 (2014) Amd.1 2015-05-14 12 11.1002/1000/12525 _ * To access the Rec
8、ommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T P.806/Amd.1 (05/2015) FOREWORD The International Telecommunication Union (ITU) is the United Nat
9、ions specialized agency in the field of telecommunications, information and communication 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
10、 on them with a view to standardizing telecommunications on a worldwide basis. The World 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 o
11、f ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. 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 Recommendation, the expression “Administration“ i
12、s used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance wit
13、h the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ 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 Recommendation is require
14、d of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual
15、 Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. Howeve
16、r, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prio
17、r written permission of ITU. Rec. ITU-T P.806/Amd.1 (05/2015) 1 Recommendation ITU-T P.806 A subjective quality test methodology using multiple rating scales Amendment 1 New Appendix III ITU-T P.806 test instructions in Chinese Mandarin 1) Appendix III Introduce Appendix III, as shown below, after A
18、ppendix II. Appendix III ITU-T P.806 test instructions in Chinese Mandarin (This appendix does not form an integral part of this Recommendation.) The instruction presented below is a translation of Table 6.1 Table III.1 ITU-T P.806 主 观测试方法 使用的 评价标 度 ITU-T P.806 感知 质量标度 感知 质量标度 描述 标度 描述符 语音 - 飘 忽 语音信
19、号 的 缓慢 失真 抖 动,飘动,飘忽,断断续续,中断 语音 - 刺耳 语音信号 的快速失真 粗 糙 ,刺耳 语音 - 沉 闷 语音信号 的低 频部分 被声染色 低沉, 迟钝, 闷 声,模糊 语音 - 遥 远 语音信号 的高 频部分 被声染色 遥 远,细声,单薄,稀疏 噪音 - 强 度 背景噪音的 强度 背景噪音:嘶嘶声, 匆 促, 湍 急 , 冲击,咆哮,喧嚣,轰隆隆 噪音 - 变 化 背景噪音随(随 时间)变化 背景噪音: 嘈杂,变化,断续,中断 整体 标度 描述 响度 整体响度,包括 语音信号以及背景噪音。 整体 整体 质量,包括语音信号以及背景噪音。 The instruction p
20、resented below is a translation of Table 6.2 2 Rec. ITU-T P.806/Amd.1 (05/2015) Table III.2 感知 质量 等 级所用的量值估计 您会如何形容此 样本所展现的质量数量 ? 压倒性 的 5.0 显而易见 的 4.0 比 较明显 3.0 有些明 显 2.0 刚好觉察 到 1.0 无法 觉 察 0.0 The instruction presented below is a translation of Table 6.3 Table III.3 展示了 响度和整体 质量所用的刻度。 两个刻度均为分类评价法,都是
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