ISO IEC 23003-2 AMD 1-2015 Information technology - MPEG audio technologies - Part 2 Spatial Audio Object Coding (SAOC) - Amendment 1 SAOC conformance《信息技术 多媒体框.pdf
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1、Information technology MPEG audio technologies Part 2: Spatial Audio Object Coding (SAOC) AMENDMENT 1: SAOC conformance Technologies de linformation Technologies audio MPEG Partie 2: Codage dobjet audio spatial (SAOC) AMENDEMENT 1: Conformit SAOC INTERNATIONAL STANDARD ISO/IEC 23003-2 First edition
2、2010-10-01 Reference number ISO/IEC 23003-2:2010/Amd.1:2015(E) AMENDMENT 1 2015-05-01 ISO/IEC 2015 ii ISO/IEC 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any
3、 form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postal
4、e 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 ISO/IEC 23003-2:2010/Amd.1:2015(E) ISO/IEC 23003-2:2010/Amd.1:2015(E) Foreword ISO (the International Organization for Standardization) and IEC (the International Elec
5、trotechnical 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 technical committees established by the respective organization to deal with particular fields of techn
6、ical 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 part in the work. In the field of information technology, ISO and IEC have established a joint techni
7、cal committee, ISO/IEC JTC 1. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of document should be noted. This document was draft
8、ed in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some 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 pa
9、tent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does no
10、t constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informatio
11、n The committee responsible for this document is ISO/IEC JTC 1, Information technology, SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 2015 All rights reserved iii Information technology MPEG audio technologies Part 2: Spatial Audio Object Coding (SAOC) AMENDMENT 1:
12、SAOC conformance Add Clause 10, Conformance testing: 10 Conformance testing 10.1 Introduction This Clause specifies conformance criteria for both bitstreams and decoders compliant with the SAOC standard as defined in Clauses 1 to 9. This is done to assist implementers and to ensure interoperability.
13、 10.2 T erms and definiti ons The terms and definitions as stated in Clause 3 apply. Furthermore, the following terms and definitions will be used throughout this Clause. Bitstream data encoded according to the SAOC standard conformance test bitstream bitstream used for testing the conformance of an
14、 SAOC 10.3 SAOC conformance testing Subclause 5.5 defines the SAOC profiles and levels. Some conformance criteria apply to SAOC in general, while others are specific to the specific SAOC profile and its levels. Conformance shall be tested for the level of the profile with which a given bitstream or
15、decoder/transcoder claims to comply. 10.4 Bitstreams 10.4.1 Characteristics The SAOC audio object type (AOT) can be used in combination with various AOTs. 10.4.2 T est procedure 10.4.2.1 Introduction An SAOC bitstream shall have the syntax and semantics as specified in Clauses 1 to 9. The present su
16、bclause defines the conformance criteria that shall be fulfilled by a compliant bitstream. These criteria are specified for the syntactic elements of the bitstream and for some parameters decoded from the SAOC bitstream payload. 10.4.2.2 C onfigur ation header ISO/IEC 23003-2:2010/Amd.1:2015(E) ISO
17、2015 All rights reserved 1 ISO/IEC 23003-2:2010/Amd.1:2015(E) 10.4.2.2.1 S A OC SpecificC onfig() bsSamplingFrequencyIndex Shall be in the range 0x00xc or 0xf. For further restrictions, see 10.4.2.5 bsSamplingFrequency For restrictions, see 10.4.2.5 bsLowDelayMode For restrictions, see 10.4.2.5 bsFr
18、eqRes Shall not be encoded with a value of 0. For further restrictions, see 10.4.2.5 bsFrameLength For restrictions, see 10.4.2.5 bsNumObjects For restrictions, see 10.4.2.5 bsRelatedToij No restrictions apply bsTransmitAbsNrg No restrictions apply bsNumDmxChannels For restrictions, see 10.4.2.5 bsT
19、ttDualMode No restrictions apply bsTttBandsLow Shall not be encoded with a value larger than the value of numBands as given by Table 33 bsPdgFlag No restrictions apply bsOneIOC No restrictions apply bsDcuFlag No restrictions apply bsDcuMandatory No restrictions apply bsDcuDynamic No restrictions app
20、ly bsDcuMode No restrictions apply bsDcuParam No restrictions apply 10.4.2.2.2 S A OCExt ensionC onfigData() bsSaocExtType No restrictions apply. Note that in case of values indicated as “Reserved” in Table 43, the parsing function SAOCExtensionConfigData(bsSaocExtTy pe) shall return the value 0, su
21、ch that possibly present data is read as bsFillBits (i.e., skipped) and correct parsing of the bitstream can continue. bsSaocExtLen No restrictions apply bsSaocExtLenAdd No restrictions apply bsSaocExtLenAddAdd No restrictions apply bsFillBits No restrictions apply 10.4.2.2.3 S A OCExt ensionC onfig
22、Data(0) The syntactic element SAOCExtensionConfigData(0) shall not be present in case of LD profile and baseline profile level 1. Furthermore, this syntactic element shall not be present if the helper variable numSlots 2 ISO 2015 All rights reserved ISO/IEC 23003-2:2010/Amd.1:2015(E) has a value tha
23、t is not listed in Table 55 in ISO/IEC 23003-1:2007. Furthermore, if this syntactic element is present, the bitstream shall fulfil the requirements outlined in 6.1.13 in ISO/IEC 23003-1:2007. For further restrictions, see 10.4.2.5. bsDcuFlag2 No restrictions apply bsDcuMode2 No restrictions apply bs
24、DcuParam2 No restrictions apply 10.4.2.2.3.1 R esidualC onfig() bsResidualSamplingFrequencyIndex Shall fulfil the requirements outlined in 6.1.13 and Table 88 in ISO/IEC 23003-1:2007 bsResidualFramesPerSAOCFrame Shall fulfil the requirements outlined in 6.1.13 and Table 87 in ISO/IEC 23003-1:2007 bs
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