ISO/IEC 14496-26:2010
(Main)Information technology — Coding of audio-visual objects — Part 26: Audio conformance
Information technology — Coding of audio-visual objects — Part 26: Audio conformance
ISO/IEC 14496-26:2010 specifies how tests can be designed to verify whether compressed data and decoders meet requirements specified by ISO/IEC 14496-3. In ISO/IEC 14496-26:2010, encoders are not addressed specifically. An encoder may be said to be an ISO/IEC 14496 encoder if it generates compressed data compliant with the syntactic and semantic bitstream payload requirements specified in ISO/IEC 14496-3. Characteristics of compressed data and decoders are defined for ISO/IEC 14496-3. The compressed data characteristics define the subset of the standard that is exploited in the compressed data. Examples are the applied values or range of the sampling rate and bitrate parameters. Decoder characteristics define the properties and capabilities of the applied decoding process. An example of a property is the applied arithmetic accuracy. The capabilities of a decoder specify which compressed data the decoder can decode and reconstruct, by defining the subset of the standard that may be exploited in the decodable compressed data. Compressed data can be decoded by a decoder if the characteristics of the compressed data are within the subset of the standard specified by the decoder capabilities. Procedures are described for testing conformance of compressed data and decoders to the requirements defined in ISO/IEC 14496-3. Given the set of characteristics claimed, the requirements that must be met are fully determined by ISO/IEC 14496-3. ISO/IEC 14496-26:2010 summarises the requirements, cross references them to characteristics, and defines how conformance with them can be tested. Guidelines are given on constructing tests to verify decoder conformance. Some examples of compressed data implemented according to these guidelines are provided as an electronic annex to this document usually together with their uncompressed counterparts (reference waveforms).
Technologies de l'information — Codage des objets audiovisuels — Partie 26: Conformité audio
General Information
Relations
Buy Standard
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 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
Reference number
©
ISO/IEC 2010
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's 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 the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's 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 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 Secretariat at the address given below.
© ISO/IEC 2010
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 writing from either ISO at the address below or
ISO's 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 copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO/IEC 2010 – All rights reserved
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 2010 – All rights reserved iii
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
iv © ISO/IEC 2010 – All rights reserved
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.
© ISO/IEC 2010 – All rights reserved v
ISO/IEC 14496 consists of the following parts, under the general title Information technology — Coding of
audio-visual objects:
⎯ Part 1: Systems
⎯ Part 2: Visual
⎯ Part 3: Audio
⎯ Part 4: Conformance testing
⎯ Part 5: Reference software
⎯ Part 6: Delivery Multimedia Integration Framework (DMIF)
⎯ Part 7: Optimised reference software for coding of audio-visual objects
⎯ Part 8: Carriage of ISO/IEC 14496 contents over IP networks
⎯ Part 9: Reference hardware description
⎯ Part 10: Advanced Video Coding
⎯ Part 11: Scene description and application engine
⎯ Part 12: ISO base media file format
⎯ Part 13: Intellectual Property Management and Protection (IPMP) extensions
⎯ Part 14: MP4 file format
⎯ Part 15: Advanced Video Coding (AVC) file format
⎯ Part 16: Animation Framework eXtension (AFX)
⎯ Part 17: Streaming text format
⎯ Part 18: Font compression and streaming
⎯ Part 19: Synthesized texture stream
⎯ Part 20: Lightweight Application Scene Representation (LASeR) and Simple Aggregation Format (SAF)
⎯ Part 21: MPEG-J Graphics Framework eXtensions (GFX)
⎯ Part 22: Open Font Format
⎯ Part 23: Symbolic Music Representation
⎯ Part 24: Audio and systems interaction [Technical Report]
⎯ Part 25: 3D Graphics Compression Model
⎯ Part 26: Audio conformance
⎯ Part 27: 3D Graphics conformance
vi © ISO/IEC 2010 – All rights reserved
Introduction
ISO/IEC 14496-3 specifies coded representations of audio information. ISO/IEC 14496-3 allows for large
flexibility, achieving suitability of ISO/IEC 14496 for many different applica
...
INTERNATIONAL ISO/IEC
STANDARD 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
Reference number
©
ISO/IEC 2010
PDF disclaimer
PDF files may contain embedded typefaces. In accordance with Adobe's licensing policy, such files 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 the editing. In
downloading a PDF file, parties accept therein the responsibility of not infringing Adobe's 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 the PDF file(s) constituting this document can be found in the General Info relative to
the file(s); the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the files are suitable for
use by ISO member bodies. In the unlikely event that a problem relating to them is found, please inform the Central Secretariat at the
address given below.
© ISO/IEC 2010
All rights reserved. Unless required for installation or otherwise specified, no part of these DVDs may be reproduced, stored in a retrieval
system or transmitted in any form or by any means without prior permission from ISO. Requests for permission to reproduce this product
should be addressed to
ISO copyright office • Case postale 56 • CH-1211 Geneva 20 • Switzerland
Internet copyright@iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
Published in Switzerland
ii © ISO/IEC 2010 – All rights reserved
These DVDs contain:
1) the publication ISO/IEC 14496-26:2010 in portable document format (PDF), which can be viewed
using Adobe® Acrobat® Reader;
2) electronic attachments for audio conformance.
Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
Installation
If this publication has been packaged as a zipped file, do NOT open the file from the DVD, but copy it to the
desired location in your local environment. Once the file has been copied to your local environment, open the
file to unzip its contents. For compound documents (e.g. HTML documents comprising several files or folders,
documents that have been subdivided owing to the total file size, etc.), in order for the links between
documents to function properly, the file and folder names must be maintained and all the files stored in the
same folder.
Where the zip file contains a Readme file, it is essential to consult this file to understand the way in which the
document has been structured.
© ISO
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 14496-26
ISO/JTC 1/SC 29
Information technology — Coding of
Secretariat: ANSI
audio-visual objects —
Voting begins on:
2010-02-24
Part 26:
Audio conformance
Voting terminates on:
2010-04-24
Technologies de l'information — Codage des objets audiovisuels —
Partie 26: Conformité audio
Please see the administrative notes on page iii
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORT-
ING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 14496-26:2010(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2010
ISO/FDIS 14496-26:2010(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's 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 the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's 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 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 Secretariat at the address given below.
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user's country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO's
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 copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2010 – All rights reserved
ISO/IEC FDIS 14496-26:2010(E)
In accordance with the provisions of Council Resolution 21/1986, this document is circulated in the
English language only.
© ISO/IEC 2010 – All rights reserved iii
ISO/IEC FDIS 14496-26:2010(E)
Contents Page
Foreword. vi
Introduction . viii
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
iv © ISO/IEC 2010 – All rights reserved
ISO/IEC FDIS 14496-26:2010(E)
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 2010 – All rights reserved v
ISO/IEC FDIS 14496-26:2010(E)
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.
vi © ISO/IEC 2010 – All rights reserved
ISO/IEC FDIS 14496-26:2010(E)
ISO/IEC 14496 consists of the following parts, under the general title Information technology — Coding of
audio-visual objects:
⎯ Part 1: Systems
⎯ Part 2: Visual
⎯ Part 3: Audio
⎯ Part 4: Conformance testing
⎯ Part 5: Reference software
⎯ Part 6: Delivery Multimedia Integration Framework (DMIF)
⎯ Part 7: Optimised reference software for coding of audio-visual objects
⎯ Part 8: Carriage of ISO/IEC 14496 contents over IP networks
⎯ Part 9: Reference hardware descrip
...
INTERNATIONAL ISO/IEC
STANDARD 14496-26
First edition
2010-##-##
Information technology — Coding of
audio-visual objects —
Part 26:
Audio conformance
Technologies de l'information — Codage des objets audiovisuels —
Partie 26: Conformité audio
PROOF/ÉPREUVE
Reference number
©
ISO/IEC 2010
PDF disclaimer
PDF files may contain embedded typefaces. In accordance with Adobe's licensing policy, such files 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 the editing. In
downloading a PDF file, parties accept therein the responsibility of not infringing Adobe's 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 the PDF file(s) constituting this document can be found in the General Info relative to
the file(s); the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the files are suitable for
use by ISO member bodies. In the unlikely event that a problem relating to them is found, please inform the Central Secretariat at the
address given below.
© ISO/IEC 2010
All rights reserved. Unless required for installation or otherwise specified, no part of these DVDs may be reproduced, stored in a retrieval
system or transmitted in any form or by any means without prior permission from ISO. Requests for permission to reproduce this product
should be addressed to
ISO copyright office • Case postale 56 • CH-1211 Geneva 20 • Switzerland
Internet copyright@iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
Published in Switzerland
ii PROOF/ÉPREUVE © ISO/IEC 2010 – All rights reserved
These DVDs contain:
1) the publication ISO/IEC 14496-26:2010 in portable document format (PDF), which can be viewed
using Adobe® Acrobat® Reader;
2) electronic attachments for audio conformance.
Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
Installation
If this publication has been packaged as a zipped file, do NOT open the file from the DVD, but copy it to the
desired location in your local environment. Once the file has been copied to your local environment, open the
file to unzip its contents. For compound documents (e.g. HTML documents comprising several files or folders,
documents that have been subdivided owing to the total file size, etc.), in order for the links between
documents to function properly, the file and folder names must be maintained and all the files stored in the
same folder.
Where the zip file contains a Readme file, it is essential to consult this file to understand the way in which the
document has been structured.
© ISO/IEC 2010 – All righ
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.