ITU-T P 862 3 CORR 1-2011 Application guide for objective quality measurement based on Recommendations P 862 P 862 1 and P 862 2 Corrigendum 1 (Study Group 12)《基于推荐性规范P 862 P 862 1.pdf
《ITU-T P 862 3 CORR 1-2011 Application guide for objective quality measurement based on Recommendations P 862 P 862 1 and P 862 2 Corrigendum 1 (Study Group 12)《基于推荐性规范P 862 P 862 1.pdf》由会员分享,可在线阅读,更多相关《ITU-T P 862 3 CORR 1-2011 Application guide for objective quality measurement based on Recommendations P 862 P 862 1 and P 862 2 Corrigendum 1 (Study Group 12)《基于推荐性规范P 862 P 862 1.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、 International Telecommunication Union ITU-T P.862.3TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Corrigendum 1(11/2011) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Methods for objective and subjective assessment of speech quality Application guide for objective quality mea
2、surement based on Recommendations P.862, P.862.1 and P.862.2 Corrigendum 1 Recommendation ITU-T P.862.3 (2007) Corrigendum 1 ITU-T P-SERIES RECOMMENDATIONS TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Vocabulary and effects of transmission parameters on customer opinion of transmission
3、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 Methods for objective and subjective assessment
4、 of speech quality Series P.80P.800Audiovisual 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 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T P.862.
5、3 (2007)/Cor.1 (11/2011) i Recommendation ITU-T P.862.3 Application guide for objective quality measurement based on Recommendations P.862, P.862.1 and P.862.2 Corrigendum 1 History Edition Recommendation Approval Study Group 1.0 ITU-T P.862.3 2005-11-29 12 2.0 ITU-T P.862.3 2007-11-13 12 2.1 ITU-T
6、P.862.3 (2007) Cor. 1 2011-11-09 12 ii Rec. ITU-T P.862.3 (2007)/Cor.1 (11/2011) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standard
7、ization 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 World Telecommunication Standardization Assembly (WTSA), which
8、 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. In some areas of information technology which fall within ITU
9、-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation
10、 is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “mus
11、t“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation ma
12、y 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 Recommendation development process. As of the date of approval of thi
13、s Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent data
14、base at http:/www.itu.int/ITU-T/ipr/. ITU 2012 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T P.862.3 (2007)/Cor.1 (11/2011) 1 Recommendation ITU-T P.862.3 Application guide for objective quality me
15、asurement based on Recommendations P.862, P.862.1 and P.862.2 Corrigendum 1 Table I.3 in Appendix I of Recommendation ITU-T P.862.3 (2007) contains an error. The abbreviation FR should read as EFR, HR as FR and EFR as HR. The table below contains the required changes as revision marks: Table I.3 The
16、 P.862 reference values for GSM standardized codecs Language File name AMR FREFR HRFR EFRHR 12.2 kbit/s 10.2 kbit/s7.95 kbit/s7.4 kbit/s6.7 kbit/s5.9 kbit/s5.15 kbit/s4.75 kbit/s American English Female 1 (0.00-7.97 s).wav 3.87 3.75 3.60 3.61 3.52 3.43 3.33 3.18 3.94 3.03 3.20 Female 2 (0.00-8.06 s)
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