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1、 Reference number ISO/IEC 23003-1:2007/Amd. 2:2008(E) ISO/IEC 2008 INTERNATIONAL STANDARD ISO/IEC 23003-1 First edition 2007-02-15 AMENDMENT 2 2008-08-15 Information technology MPEG audio technologies Part 1: MPEG Surround AMENDMENT 2: Reference software Technologies de linformation Technologies aud
2、io MPEG Partie 1: Ambiance MPEG AMENDEMENT 2: Logiciel de rfrence Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,
3、- ISO/IEC 23003-1:2007/Amd. 2:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing t
4、he editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file
5、can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretar
6、iat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writ
7、ing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2008 All rights reserved Copyr
8、ight International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 23003-1:2007/Amd. 2:2008(E) ISO/IEC 2008 All rights reserved
9、iii Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through te
10、chnical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take
11、part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare In
12、ternational Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that so
13、me of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 2 to ISO/IEC 23003-1:2007 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology Subcommittee SC 29, Co
14、ding of audio, picture, multimedia and hypermedia information. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- C
15、opyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 23003-1:2007/Amd. 2:2008(E) ISO/IEC 2008 All rights reser
16、ved 1 Information technology MPEG audio technologies Part 1: MPEG Surround AMENDMENT 2: Reference software After Clause 8, add a new clause, Reference software, as given below: 9 Reference software 9.1 Reference software structure 9.1.1 Introduction This clause contains simulation software for MPEG
17、Surround as defined in clauses 1 to 7 and Annexes A to J of ISO/IEC 23003-1. This software has been derived from verification models used in the process of developing the standard. Reference software is normative in the sense that it correctly implements the MPEG Surround decoding processes describe
18、d in ISO/IEC 23003-1. Complying ISO/IEC 23003-1 implementations are not expected to follow the algorithms or the programming techniques used by the reference software. Although the decoding software is considered normative, it cannot add anything to the textual technical description of MPEG Surround
19、 included in ISO/IEC 23003-1. The software contained in this clause 9 and in Annex K is divided into three categories: a) Bitstream decoding software is catalogued in subclause 9.2. This software accepts bitstreams encoded according to the normative specification in ISO/IEC 23003-1 and decodes the s
20、treams into the audio signals associated with each bitstream. While this software appears in the normative part of this specification, attention is drawn to the fact that the implementation techniques used in this software are not considered normative several different implementations could produce
21、the same result but the software is considered normative in that it correctly implements the MPEG Surround decoding processes described in ISO/IEC 23003-1. b) Bitstream encoding software is catalogued in Annex K.1 (informative). This software creates bitstreams from associated audio signals. The enc
22、oders are provided as a means to obtain bitstreams with the normative syntax described in ISO/IEC 23003-1. The techniques used for encoding are not specified by this specification, and the quality and complexity of these encoders has not been optimized. c) Utility software is catalogued in Annex K.2
23、 (informative). This software was found useful by the developers of the standard, but may not conform to the normative specifications given in ISO/IEC 23003- 1. File locations given in this document are expressed relative to this documents location in the source tree. Copyright International Organiz
24、ation for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 23003-1:2007/Amd. 2:2008(E) 2 ISO/IEC 2008 All rights reserved 9.1.2 Copyright disclaim
25、er for software modules Each source code module in this specification contains a copyright disclaimer which shall not be removed from the source code module. The generic version of this disclaimer is provided below. Software Copyright Licencing Disclaimer for MPEG Standards This software module was
26、originally developed by () and edited by (), (), in the course of development of the for reference purposes and its performance may not have been optimized. This software module is an implementation of one or more tools as specified by the . ISO/IEC gives You a royalty-free, worldwide, non-exclusive
27、, copyright license to copy, distribute, and make derivative works of this software module or modifications thereof for use in implementations of the in products that satisfy conformance criteria (if any). Those intending to use this software module in products are advised that its use may infringe
28、existing patents. ISO/IEC have no liability for use of this software module or modifications thereof. Copyright is not released for products that do not conform to audiovisual and image-coding related ITU Recommendations and/or ISO/IEC International Standards. Assurance that the originally developed
29、 software module can be used (1) in the once the has been adopted; and (2) to develop the : grants ISO/IEC all rights necessary to include the originally developed software module or modifications thereof in the and to permit ISO/IEC to offer You a royalty-free, worldwide, non-exclusive, copyright l
30、icense to copy, distribute, and make derivative works for use in implementations of the in products that satisfy conformance criteria (if any), and to the extent that such originally developed software module or portions of it are included in the . To the extent that owns patent rights that would be
31、 required to make, use, or sell the originally developed software module or portions thereof included in the in a conforming product, will assure the ISO/IEC that it is willing to negotiate licenses under reasonable and non-discriminatory terms and conditions with applicants throughout the world. IS
32、O/IEC gives You a free license to this software module or modifications thereof for the sole purpose of developing the retains full right to modify and use the code for its own purpose, assign or donate the code to a third party and to inhibit third parties from using the code for products that do n
33、ot conform to MPEG-related ITU Recommendations and/or ISO/IEC International Standards. This copyright notice must be included in all copies or derivative works. Copyright (c) ISO/IEC 200_. NB1 In the text should be replaced with the appropriate International Standard, e.g. ISO/IEC 14496-1 NB2 = Firs
34、t Name, = Last name, = Company Name NB3 Sentences in italic not required in statement when the original developer does not wish to be identified NB4 Sentences in bold not required in statement when the original developer allows unrestricted use of this software NB5 Sentences underlined should be rem
35、oved when the is published NB6 Reference to “ITU Recommendation“ may be omitted when the module is deemed not to be relevant for ITU Recommendations Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/200
36、8 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 23003-1:2007/Amd. 2:2008(E) ISO/IEC 2008 All rights reserved 3 9.2 Bitstream decoding software 9.2.1 Introduction The provided bitstream decoding software is a normative reference implementation of the respe
37、ctive specification. 9.2.2 MPEG Surround decoding software Location Content mp4spatialdec MPEG Surround decoder mp4mcDec MPEG Surround decoder integrated with HE- AAC downmix decoder After Annex J, add a new informative annex, as follows: Annex K (informative) Reference software K.1 Bitstream encodi
38、ng software K.1.1 Introduction For the bitstream encoding software provided here, attention is called to the fact that these encoders are provided for the purpose of creating bitstreams with normative syntax. The performance of these encoders should not be taken as indicative of that which can be ob
39、tained from implementations where quality and computational optimization are given priority. The techniques used for encoding are not specified by this specification. K.1.2 MPEG Surround encoding software Location Content mp4spatialenc MPEG Surround encoder K.2 Additional utility software K.2.1 Intr
40、oduction Software that appears in this Annex has proven to be useful to the developers of the standard but is not a normative reference implementation. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/
41、2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 23003-1:2007/Amd. 2:2008(E) 4 ISO/IEC 2008 All rights reserved K.2.2 MPEG Surround utility software Location Content conf_mps Tools for MPEG Surround conformance mp12_mps Tools for extracting MPEG Surroun
42、d data embedded in MPEG-1/2 Layer I/II/III bitstreams K.3 Providers of reference software The following organizations have contributed software: Agere Systems Coding Technologies Fraunhofer IIS Philips Panasonic LG Electronics Copyright International Organization for Standardization Provided by IHS
43、under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Res
44、ale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 23003-1:2007/Amd. 2:2008(E) ICS 35.040 Price based on 4 pages ISO/IEC 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 10/25/2008 04:56:19 MDTNo reproduction or networking permitted without license from IHS -,-,-