ISO/IEC TR 13818-5:1997/Amd 1:1999
(Amendment)Information technology — Generic coding of moving pictures and associated audio information — Part 5: Software simulation — Amendment 1: Advanced Audio Coding (AAC)
Information technology — Generic coding of moving pictures and associated audio information — Part 5: Software simulation — Amendment 1: Advanced Audio Coding (AAC)
Technologies de l'information — Codage générique des images animées et des informations sonores associées — Partie 5: Simulation de logiciel — Amendement 1: Codage audio avancé (AAC)
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TECHNICAL ISO/IEC
REPORT TR 13818-5
First edition
1997-12-15
AMENDMENT 1
1999-07-01
Information technology — Generic coding
of moving pictures and associated audio
information —
Part 5:
Software simulation
AMENDMENT 1: Advanced Audio Coding
(AAC)
Technologies de l'information — Codage générique des images animées et
des informations sonores associées —
Partie 5: Simulation de logiciel
AMENDEMENT 1: Codage audio avancé (AAC)
Reference number
B C
ISO/IEC TR 13818-5:1997/Amd.1:1999(E)
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ISO/IEC 13818-5:1997/Amd.1:1999(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 main task of technical committees is to prepare International Standards, but in
exceptional circumstances a technical committee may propose the publication of a
Technical Report of one of the following types:
— type 1, when the required support cannot be obtained for the publication of an
International Standard, despite repeated efforts;
— type 2, when the subject is still under technical development or where for any
other reason there is the future but not immediate possibility of an agreement
on an International Standard;
— type 3, when a technical committee has collected data of a different kind from
that which is normally published as an International Standard (“state of the
art”, for example).
Technical Reports of types 1 and 2 are subject to review within three years of
publication, to decide whether they can be transformed into International
Standards. Technical Reports of type 3 do not necessarily have to be reviewed
until the data they provide are considered to be no longer valid or useful.
Amendment 1 to ISO/IEC TR 13818-5:1997, which is a Technical Report of
type 3, was prepared by Joint Technical Committee ISO/IEC JTC 1, Information
technology, Subcommittee SC 29, Coding of audio, picture, multimedia and
hypermedia information.
© ISO/IEC 1999
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 micro-
film, without permission in writing from the publisher.
ISO/IEC Copyright Office • Case postale 56 • CH-1211 Genève 20 • Switzerland
Printed in Switzerland
ii
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ISO/IEC ISO/IEC TR 13818-5:1997/Amd.1:1999(E)
Information technology — Generic coding of moving pictures and
associated audio information — Part 5: Software simulation
AMENDMENT 1
Advanced Audio Coding (AAC)
1) Add the following normative references to subclause 1.2:
„
ISO/IEC 13818-3: 1998, Information technology – Generic coding of moving pictures and associated audio information -
Part 3: Audio (Second Edition).
ISO/IEC 13818-7: 1997, Information technology – Generic coding of moving pictures and associated audio information -
Part 7: Advanced Audio Coding (AAC).
”
2) Replace the subclauses 5.2.1 (Readme.1st), 5.2.2(doc/readme.1st), by the following:
„
5.2.1 Readme.1st for ISO/IEC 13818-3
*************************************************************************
ISO MPEG Audio Subgroup Software Simulation Group (1997)
ISO/IEC 13818-3, Second Edition, 1997 MPEG-2 Audio Codec
$Id: readme.1st 1.10 1997/01/28 12:00:48 de Bont Exp $
$Log: readme.1st $
Revision 1.10 1997/01/19 23:00:48 de Bont
Distribution 10. Bug fixes and compliance to 13818-3, Second Edition, 1997
Revision 1.9 1997/01/19 23:00:48 rowlands
Distribution 09. Improved code robustness for some combinations of
parameters.
Revision 1.7 1996/02/14 06:08:44 rowlands
Distribution 07. Added much multichannel encoder and decoder
functionality. Added complete layer 3 to low sampling rate.
Revision 1.5 1995/07/14 08:14:16 rowlands
Added more audio channel configurations, fixed dynamic crosstalk
bugs, and added two-channel low sampling frequency support.
Revision 1.4 1995/06/22 01:25:45 rowlands
Distribution 04, with decoder dynamic crosstalk
Revision 1.3 1995/06/19 03:30:12 rowlands
Distribution 03, with decoder mods and bug fixes
Revision 1.2 1995/06/16 11:12:43 rowlands
Separated text documents
Revision 1.1 1995/06/16 10:58:27 rowlands
Initial revision
*************************************************************************
MPEG-2 Audio Simulation Software Distribution 10
================================================
$Date: 1997/01/28 12:00:48 $
This package contains source code for the MPEG-2 audio encoder and decoder under development by the MPEG/audio software simulation ad-hoc group. The package includes the
multichannel and low sampling frequency extensions in MPEG-2 audio.
The following table indicates the operations supported by the multichannel software in this distribution. The multichannel encoder and decoder have been amended compared
to dist09. The bug fixes mostly fix combinations of parameters which caused reliability problems. Furthermore both encoder and decoder are now compliant to 13818-3,
Second Edition, 1997.
Feature Encoder Decoder
--------------------------------------------------------------------------
Sampling_frequency (kHz) 32,44.1,48 32,44.1,48
Bit_rate (kb/s) >=32 >=32
Bitstream format ISO/IEC 13818-3, ISO/IEC 13818-3,
2nd Edition, 1997 2nd Edition, 1997
Extension bitstream Y Y
Layer 2 1,2
Channel configuration 5/2,3/2,3/1, 5/2,3/2,3/1,
3/0(+2/0),3/0(+2/0),
2/2,2/1, 2/2,2/1,
2/0(+2/0),2/0(+2/0),
1/0(+2/0) 1/0(+2/0)
LFE Y Y
Multilingual Y Y
Dematrix procedure 0,1,2,3 0,1,2,3
TC allocationY Y
Dynamic crosstalk Y Y
Prediction Y Y
Phantom_center Y Y
Ancillary data Y Y
File I/O AIFF,raw AIFF,raw
The following features are NOT supported by this distribution:
* layers 1 or 3 wrt. the encoder
* layer 3 wrt. the decoder
The decoder passes all multichannel compliance bitstreams except for the layer 3 bitstream.
The following table indicates the operations supported by the low sampling frequency software in this distribution. The noise allocation in the layer 3 encoding procedure
has been made more robust.
Feature Encoder Decoder
-----------------------------------------------------------
MPEG- 1,2 1,2
Sampling_frequency (kHz) 16,22.05,24, 16,22.05,24,
32,44.1,4832,44.1,48
Bit_rate (kb/s) 8-448 8-448
Bitstream format IS IS
1
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ISO/IEC TR 13818-5:1997/Amd.1:1999(E) ISO/IEC
Layer 1,2,3 1,2,3
Ancillary data N N
File I/O AIFF,raw AIFF,raw
Sampling rate conversion N N
The following features are NOT supported by this distribution:
* lower sampling frequencies for layer 3 in the encoder
* psychoacoustic model 1 for lower sampling frequencies in the encoder
* psychoacoustic model 1 for layer 3 in the encoder
The decoder pas
...
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