IEC 61937-6:2006/AMD1:2014

IEC 61937-6 ®
Edition 2.0 2014-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying
IEC 60958 –
Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4
AAC formats
Audionumérique – Interface pour les flux de bits audio à codage MIC non
linéaire conformément à l’IEC 60958 –
Partie 6: Flux de bits MIC non linéaire selon les formats MPEG-2 AAC et MPEG-4
AAC
IEC 61937-6:2006-01/AMD1:2014-01(EN-FR)

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IEC 61937-6 ®
Edition 2.0 2014-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying

IEC 60958 –
Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4

AAC formats
Audionumérique – Interface pour les flux de bits audio à codage MIC non

linéaire conformément à l’IEC 60958 –

Partie 6: Flux de bits MIC non linéaire selon les formats MPEG-2 AAC et MPEG-4

AAC
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX F
ICS 33.160.60; 35.040 ISBN 978-2-8322-1363-6

– 2 – 61937-6 Amend. 1 © IEC:2014
FOREWORD
This amendment has been prepared by technical area 4: Digital system interfaces and
protocols of IEC technical committee 100: Audio, video and multimedia systems and
equipment.
The text of this amendment is based on the following documents:
CDV Report on voting
100/2052/CDV 100/2117/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
INTRODUCTION to Amendment 1
The revision of IEC 61937-6:2006 has become necessary to define new additional data-type-
dependent information. This Amendment 1 contains the following significant technical
changes with respect to the base publication. The revised items apply to the small parts of
IEC 61937-6.
– LC profile with MPEG Surround, LC profile with SBR and MPEG Surround in MPEG-2 AAC
are defined data-type-dependent information field in Pc.
– HE-AAC V2 profile itself, and MPEG-4 AAC profile, HE-AAC profile, HE-AAC V2 profile
combined with MPEG Surround respectively are defined data-type-dependent information
field in Pc.
2 Normative references
Replace, in the list of normative references, the following standards by undated references
ISO/IEC 13818-7, Information technology – Generic coding of moving pictures and associated
audio information – Part 7: Advanced Audio Coding (AAC)
ISO/IEC 14496-3, Information technology – Coding of audio-visual objects – Part 3: Audio
Add, at the end of the existing list of normative references the following new publication:
ISO/IEC 23003-1, Information technology – MPEG audio technologies – Part 1: MPEG
Surround
61937-6 Amend. 1 © IEC:2014 – 3 –
3.1 Terms and definitions
Replace the existing terms and definitions 3.1.2, 3.1.3, 3.1.5 and 3.1.6 by the following:
3.1.2
MPEG-2 AAC LC profile
MPEG-2 AAC low complexity profile identified in ISO/IEC 13818-7
3.1.3
MPEG-2 AAC LC profile with SBR
MPEG-2 AAC low complexity profile with spectral band replication identified in
ISO/IEC 13818-7
3.1.5
MPEG-4 AAC profile
MPEG-4 AAC profile identified in ISO/IEC 14496-3
3.1.6
MPEG-4 HE-AAC profile
MPEG-4 HE-AAC profile identified in ISO/IEC 14496-3
Add the new terms and definitions 3.1.7 and 3.1.8, as follows:
3.1.7
MPEG-4 HE-AAC V2 profile
MPEG-4 HE-AAC V2 profile identified in ISO/IEC 14496-3
3.1.8
MPEG Surround
technology used for coding of multichannel signals based on a down mixed signal of the
original multichannel signal, and associated spatial parameters
Note 1 to entry: MPEG Surround in defined in ISO/IEC 23003-1.
3.2 Abbreviations
Replace the existing wording for abbreviation HE-AAC as follows:
HE-AAC MPEG-4 High Efficiency AAC
Add the two new abbreviations, as follows:
HE-AAC V2 MPEG-4 High Efficiency AAC Version 2
MPEG Moving Picture Experts Group

5.2.3 The data MPEG-2 AAC half-rate low sampling frequency
Replace the entire existing Table 7 by the following new Table 7:

– 4 – 61937-6 Amend. 1 © IEC:2014
Table 7 – Data-type-dependent information for data-type
MPEG-2 AAC half-rate low sampling frequency
Bits of Pc Value Contents
LSB.MSB
8-12 00 No indication
01 LC profile
02 Reserved
03 LC profile with MPEG Surround
04 LC profile with SBR
05,06 Reserved
07 LC profile with SBR and MPEG Surround
08-31 Reserved
5.2.5 The data MPEG-2 AAC quarter-rate low sampling frequency
Replace the entire existing Table 8 by the following new Table 8:
Table 8 – Data-type-dependent information for data-type
MPEG-2 AAC quarter-rate low sampling frequency
Bits of Pc Value Contents
LSB.MSB
8-12 00 No indication
01 LC profile
02 Reserved
03 LC profile with MPEG Surround
04 LC profile with SBR
05,06 Reserved
07 LC profile with SBR and MPEG Surround
08-31 Reserved
5.2.7 The data MPEG-4 AAC
Replace the entire existing Table 9 by the following new Table 9:

61937-6 Amend. 1 © IEC:2014 – 5 –
Table 9 – Data-type-dependent information for data-type MPEG-4 AAC
Bits of Pc Value Contents
LSB.MSB
8-12 00 No indication
01 AAC profile, format for transmission is ADTS
02 Reserved
03 AAC profile with MPEG Surround, format for transmission is ADTS, MPEG
Surround data complies to MPEG Surround baseline profile
04 HE-AAC profile, format for transmission is ADTS
05 Reserved
06 HE-AAC profile with MPEG Surround, format for transmission is ADTS,
MPEG Surround data complies to MPEG Surround baseline profile
07-11 Reserved
12 HE-AAC V2 profile, format for transmission is ADTS.
13 Reserved
14 HE-AAC V2 profile with MPEG Surround, format for transmission is ADTS,
MPEG Surround data complies to MPEG Surround baseline profile.
15-31 Reserved
5.2.9 The data MPEG-4 AAC half-rate low sampling frequency
Replace the entire existing Table 10 by the following new Table 10:
Table 10 – Data-type-dependent information for data-type
MPEG-4 AAC half-rate low sampling frequency
Bits of Pc Value Contents
LSB.MSB
8-12 00 No indication
01 AAC profile, format for transmission is ADTS
02 Reserved
03 AAC profile with MPEG Surround, format for transmission is ADTS, MPEG
Surround data complies to MPEG Surround baseline profile
04 HE-AAC profile, format for transmission is ADTS
05 Reserved
06 HE-AAC profile with MPEG Surround, format for transmission is ADTS,
MPEG Surround data complies to MPEG Surround baseline profile
07-11 Reserved
12 HE-AAC V2 profile, format for transmission is ADTS
13 Reserved
14 HE-AAC V2 profile with MPEG Surround, format for transmission is ADTS,
MPEG Surround data complies to MPEG Surround baseline profile.
15-31 Reserved
5.2.11 The data MPEG-4 AAC quarter-rate low sampling frequency
Replace the entire existing Table 11 by the following new Table 11:

– 6 – 61937-6 Amend. 1 © IEC:2014
Table 11 – Data-type-dependent information for data-type
MPEG-4 AAC quarter-rate low sampling frequency
Bits of Pc Value Contents
LSB.MSB
8-12 00 No indication
01 AAC profile, format for transmission is ADTS
02 Reserved for future profile
03 AAC profile with MPEG Surround, format for transmission is ADTS, MPEG
Surround data complies to MPEG Surround baseline profile
04 HE-AAC profile, format for transmission is ADTS
05 Reserved
06 HE-AAC profile with MPEG Surround, format for transmission is ADTS,
MPEG Surround data complies to MPEG Surround baseline profile
07-11 Reserved
12 HE-AAC V2 profile, format for transmission is ADTS.
13 Reserved
14 HE-AAC V2 profile with MPEG Surround, format for transmission is ADTS,
MPEG Surround data complies to MPEG Surround baseline profile.
15-31 Reserved
_____________
– 8 – 61937-6 Amend. 1 © IEC:2014
AVANT-PROPOS
Le présent amendement a été préparé par le domaine technique 4: Interfaces du système
numérique et protocoles du comité d'études 100 de l'IEC: Systèmes et équipements audio,
vidéo et services de données.
Le texte de cet amendement est issu des documents suivants:
CDV Rapport de vote
100/2052/CDV 100/2117/RVC
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
...