IEC 61937-6:2006/AMD1:2014

Amendment 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

Amendement 1 - 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

General Information

• Status: Published
• Publication Date: 28-Jan-2014
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.60 - Multimedia systems and teleconferencing equipment
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2014
• Completion Date: 29-Jan-2014

Relations

• Amends: IEC 61937-6:2006 - 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
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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)

---------------------- Page: 1 ----------------------
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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



Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 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

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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:

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– 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:

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