ISO/IEC 23003-2:2010/Amd 2:2015
(Amendment)Information technology — MPEG audio technologies — Part 2: Spatial Audio Object Coding (SAOC) — Amendment 2: SAOC reference software
Information technology — MPEG audio technologies — Part 2: Spatial Audio Object Coding (SAOC) — Amendment 2: SAOC reference software
Technologies de l'information — Technologies audio MPEG — Partie 2: Codage d'objet audio spatial (SAOC) — Amendement 2: Logiciel de référence SAOC
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 23003-2
First edition
2010-10-01
AMENDMENT 2
2015-05-01
Information technology — MPEG
audio technologies —
Part 2:
Spatial Audio Object Coding (SAOC)
AMENDMENT 2: SAOC reference software
Technologies de l’information — Technologies audio MPEG —
Partie 2: Codage d’objet audio spatial (SAOC)
AMENDEMENT 2: Logiciel de référence SAOC
Reference number
ISO/IEC 23003-2:2010/Amd.2:2015(E)
©
ISO/IEC 2015
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ISO/IEC 23003-2:2010/Amd.2:2015(E)
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ISO/IEC 23003-2:2010/Amd.2:2015(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.
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 drafted 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 patent 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 not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
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
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ISO/IEC 23003-2:2010/Amd.2:2015(E)
Information technology — MPEG audio technologies —
Part 2:
Spatial Audio Object Coding (SAOC)
AMENDMENT 2: SAOC reference software
Add Clause 11, Reference software, as follows:
11 Reference software
11.1 Reference software structure
11.1.1 Introduction
This Clause contains simulation software for SAOC as defined in Clauses 1 to 9 and Annexes A to G. 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 SAOC transcoding/decoding
processes described in this part of ISO/IEC 23003. Complying with this part of ISO/IEC 23003
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 SAOC included in this part of ISO/IEC 23003.
The software contained in this Clause and in Annex H is divided into three categories:
a) Bitstream decoding software is catalogued in 1.2. This software accepts bitstreams encoded
according to the normative specification in this part of ISO/IEC 23003 and decodes the streams 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 the
same result – but the software is considered normative in that it correctly implements the MPEG
Surround decoding processes described in this part of ISO/IEC 23003.
b) Bitstream encoding software is catalogued in Annex H.1. This software creates bitstreams from
associated audio signals. The encoders are provided as a means to obtain bitstreams with the
normative syntax described in ISO/IEC 23003-2. 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 H.2. This software was found useful by the developers of the
standard, but may not conform to the normative specifications given in this part of ISO/IEC 23003.
File locations in the source tree given in this part of ISO/IEC 23003 are expressed relative to the location
of the corresponding reference software package attached to this part of ISO/IEC 23003.
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