IEC 61937-10:2011

Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 10: Non-linear PCM bitstreams according to the MPEG-4 audio lossless coding (ALS) format

IEC 61937-10:2011 specifies the method for IEC 60958 to convey non-linear PCM bitstreams encoded in accordance with the MPEG-4 audio lossless coding (ALS) format.

Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire conformément à la CEI 60958 - Partie 10: Flux de bits à codage MIC non-linéaire selon le format MPEG-4 Audio sans perte (Audio Lossless Coding - ALS)

La CEI 61937-10:2011 spécifie la méthode de la CEI 60958 pour acheminer des flux de bits à codage MIC non linéaire suivant le format MPEG-4 Audio sans perte.

General Information

• Status: Published
• Publication Date: 19-Apr-2011
• ICS: 33.160.30 - Audio systems
• ICS: 35.240.99 - IT applications in other fields
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 28-Jul-2017

Relations

• Revised: IEC 61937-10:2017 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 10: Non-linear PCM bitstreams according to the MPEG-4 audio lossless coding (ALS) format
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61937-10 ®
Edition 1.0 2011-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying
IEC 60958 –
Part 10: Non-linear PCM bitstreams according to the MPEG-4 audio lossless
coding (ALS) format
Audionumérique – Interface pour les flux de bits audio à codage MIC non
linéaire conformément à la CEI 60958 –
Partie 10: Flux de bits à codage MIC non-linéaire selon le format MPEG-4 Audio
sans perte (Audio Lossless Coding – ALS)

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IEC 61937-10 ®
Edition 1.0 2011-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying
IEC 60958 –
Part 10: Non-linear PCM bitstreams according to the MPEG-4 audio lossless
coding (ALS) format
Audionumérique – Interface pour les flux de bits audio à codage MIC non
linéaire conformément à la CEI 60958 –
Partie 10: Flux de bits à codage MIC non-linéaire selon le format MPEG-4 Audio
sans perte (Audio Lossless Coding – ALS)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX P
ICS 33.160.30; 35.240.99 ISBN 978-2-88912-454-1

– 2 – 61937-10  IEC:2011
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, abbreviations and conventions . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 6
3.3 Presentation convention . 6
4 Mapping of the audio bitstream onto IEC 61937 . 6
4.1 General . 6
4.2 MPEG-4 ALS burst-info . 6
5 Format of MPEG-4 ALS data-bursts . 7
5.1 General . 7
5.2 Audio data-bursts . 7
5.2.1 Data-burst for MPEG-4 ALS . 7
5.2.2 Latency of MPEG-4 ALS decoding . 9
Annex A (informative) Effect of repetition period of data-burst and IEC 60958 frame
rate on frame period for the MPEG-4 ALS bitstreams . 11
Annex B (normative) Burst payload format for MPEG-4 ALS . 12
Annex C (normative) Values for ALSSpecificConfig in the MPEG-4 ALS burst payload
format . 13
Bibliography . 15

Figure 1 – MPEG-4 ALS data-burst . 8
Figure 2 – Latency of MPEG-4 ALS decoding . 9
Figure 3 – The MPEG-4 ALS burst-payload. 9
Figure B.1 – MPEG-4 ALS burst-payload . 12

Table 1 – Fields of burst-info (data-type=23, sub-data-type=0) . 7
Table 2 – Sample rate and number of channels of MPEG-4 ALS encoded audio,
multiplier, and IEC 60958 frame rate . 9
Table A.1 – MPEG-4 ALS payload and frame repetition: some examples . 11
Table C.1 – Recommended values for the ALSSpecificConfig in the MPEG-4 ALS
burst-payload . 13

61937-10  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 10: Non-linear PCM bitstreams according
to the MPEG-4 audio lossless coding (ALS) format

FOREWORD
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International Standard IEC 61937-10 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 standard is based on the following documents:
CDV Report on voting
100/1733/CDV 100/1808/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 61937-10  IEC:2011
A list of all the parts in the IEC 61937 series, published under the general title Digital audio –
Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 can be found on
the IEC website.
The committee has decided that the contents of this 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.
61937-10  IEC:2011 – 5 –
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 10: Non-linear PCM bitstreams according
to the MPEG-4 audio lossless coding (ALS) format

1 Scope
This part of IEC 61937 specifies the method for IEC 60958 to convey non-linear PCM
bitstreams encoded in accordance with the MPEG-4 audio lossless coding (ALS) format.
2 Normative references
The following referenced documents are indispensable for the application of this document.
...