Reference number
ISO/IEC 14496-26:2010(E)
©
ISO/IEC 2010
INTERNATIONAL
STANDARD
ISO/IEC
14496-26
First edition
2010-05-01
Information technology — Coding of
audio-visual objects —
Part 26:
Audio conformance
Technologies de l'information — Codage des objets audiovisuels —
Partie 26: Conformité audio
ISO/IEC 14496-26:2010(E)
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ii
© ISO/IEC 2010 – All rights reserved
ISO/IEC 14496-26:2010(E)
© ISO/IEC 2010 – All rights reserved iii
Contents Page
Foreword .............................................................................................................................................................v
Introduction.......................................................................................................................................................vii
1 Scope ......................................................................................................................................................1
2 Normative references............................................................................................................................1
3 Terms and definitions ...........................................................................................................................2
4 Conformance Points .............................................................................................................................2
5 Profiles....................................................................................................................................................4
6 Conformance data .................................................................................................................................4
6.1 File name conventions..........................................................................................................................4
6.2 Content ...................................................................................................................................................6
7 Audio Object Types...............................................................................................................................7
7.1 General ...................................................................................................................................................7
7.2 Null ........................................................................................................................................................14
7.3 AAC-based scalable configurations..................................................................................................14
7.4 AAC (main, LC, ER LC, SSR, LTP, ER LTP, ER LD, scalable, ER scalable)...................................15
7.5 TwinVQ and ER_TwinVQ ....................................................................................................................40
7.6 ER BSAC...............................................................................................................................................44
7.7 CELP .....................................................................................................................................................52
7.8 ER CELP ...............................................................................................................................................56
7.9 HVXC.....................................................................................................................................................61
7.10 ER HVXC...............................................................................................................................................71
7.11 ER HILN and ER Parametric ...............................................................................................................74
7.12 TTSI.......................................................................................................................................................89
7.13 General MIDI.........................................................................................................................................91
7.14 Wavetable Synthesis...........................................................................................................................92
7.15 Algorithmic Synthesis and AudioFX .................................................................................................93
7.16 Main Synthetic ...................................................................................................................................100
7.17 SBR .....................................................................................................................................................102
7.18 PS (Parametric Stereo)......................................................................................................................113
7.19 SSC (SinuSoidal Coding)..................................................................................................................115
7.20 DST (Lossless coding of oversampled audio) ...............................................................................121
7.21 Layer-3 ................................................................................................................................................123
7.22 ALS (Audio lossless coding)............................................................................................................125
7.23 SLS (Scalable Lossless Coding)......................................................................................................127
7.24 Layer-1 and Layer 2...........................................................................................................................130
7.25 Low Delay SBR ..................................................................................................................................131
8 Audio EP tool .....................................................................................................................................134
8.1 Compressed data ..............................................................................................................................134
8.2 Decoders ............................................................................................................................................137
9 Audio Composition ...........................................................................................................................142
9.1 AudioBIFS v1 .....................................................................................................................................142
9.2 Advanced Audio BIFS nodes ...........................................................................................................153
9.3 AudioBIFS v3 Nodes .........................................................................................................................179
10 MPEG-4 audio transport stream ......................................................................................................197
10.1 General ...............................................................................................................................................197
10.2 Compressed Data ..............................................................................................................................198
10.3 Decoders ............................................................................................................................................198
ISO/IEC 14496-26:2010(E)
iv © ISO/IEC 2010 – All rights reserved
11 Upstream ............................................................................................................................................199
11.1 Compressed data...............................................................................................................................199
11.2 Decoders.............................................................................................................................................200
12 Conformance test sequence assignment to profiles and levels ..................................................200
12.1 Overview .............................................................................................................................................200
12.2 Audio...................................................................................................................................................200
12.3 Systems ..............................................................................................................................................216
Annex A (informative) Complexity measurement criteria and tool for level definitions of
algorithmic synthesis and AudioFX Object Type...........................................................................221
Annex B (informative) Test bitstreams for the CELP object type ..............................................................242
ISO/IEC 14496-26:2010(E)
© ISO/IEC 2010 – All rights reserved
v
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 technical 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 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 International 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 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 patent rights.
ISO/IEC 14496-26 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
This part of ISO/IEC 14496 cancels and replaces:
⎯ ISO/IEC 14496-4:2004, Clause 6,
⎯ ISO/IEC 14496-4:2004/Cor.5,
⎯ ISO/IEC 14496-4:2004/Cor.6,
⎯ ISO/IEC 14496-4:2004/Amd.8:2005, including ISO/IEC 14496:2004/Amd.8:2005/Cor.1:2008,
⎯ ISO/IEC 14496-4:2004/Amd.11:2006, including ISO/IEC 14496-4:2004/Amd.11:2006/Cor.1:2008,
⎯ ISO/IEC 14496-4:2004/Amd.11:2006/Cor.2:2007,
⎯ ISO/IEC 14496-4:2004/Amd.11:2006/Cor.3:2008,
⎯ ISO/IEC 14496:2004-4/Amd.13:2007, including ISO/IEC 14496-4:2004/Amd.13:2007/Cor.1:2007,
⎯ ISO/IEC 14496:2004-4/Amd.13:2007/Cor.2:2007,
⎯ ISO/IEC 14496-4:2004/Amd.14:2007,
⎯ ISO/IEC 14496-4:2004/Amd.15:2007,
⎯ ISO/IEC 14496-4:2004/Amd.18:2007,
⎯ ISO/IEC 14496-4:2004/Amd.19:2007, including ISO/IEC 14496-4:2004/Amd.19:2007/Cor.1:2008,
⎯ ISO/IEC 14496-4:2004/Amd.20:2008, and
⎯ ISO/IEC 14496-4:2004/Amd.22:2008.
