SIST EN 61937-6:2007/A1:2014

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 audio formats (IEC 61937-6:2006/A1:2014)

This part of IEC 61937 specifies the method for IEC 60958 to convey non-linear PCM bitstreams encoded in accordance with the MPEG-2 AAC (Advanced Audio Coding) and MPEG-4 AAC formats.

Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung von IEC 60958 -- Teil 6: Nichtlineare PCM-Bitströme nach MPEG-2 AAC- und MPEG-4 AAC-Audio-Formaten

Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire, conformément à la CEI 60958 -- Partie 6: Flux de bits MIC non linéaire selon les formats MPEG-2 AAC et MPEG-4 AAC

Digitalni avdio - Vmesnik za nelinearne PCM-kodirane avdio bitne tokove po IEC 60958 - 6. del: Nelinearni PCM-bitni tokovi v avdio formatih MPEG-2 AAC in MPEG-4 AAC (IEC 61937-6:2006/A1:2014)

Ta del standarda IEC 61937 določa metodo za standard IEC 60958 za prenos nelinearnih PCM-bitnih tokov v skladu s formatoma MPEG-2 AAC (Advanced Audio Coding) in MPEG-4 AAC.

General Information

• Status: Published
• Publication Date: 10-Jun-2014
• ICS: 33.160.30 - Audio systems
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-May-2014
• Due Date: 10-Jul-2014
• Completion Date: 11-Jun-2014
• Ref Project: EN 61937-6:2006/A1:2014 - 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

Overview

SIST EN 61937-6:2007/A1:2014 is a European standard developed by CLC that specifies the interface for transmitting non-linear Pulse Code Modulation (PCM) encoded audio bitstreams according to IEC 60958. This part 6 amendment focuses on non-linear PCM bitstreams using MPEG-2 AAC and MPEG-4 AAC audio formats. It clarifies data-type-dependent information fields and enhances the transmission protocols for advanced AAC profiles, including those incorporating MPEG Surround technology.

This standard is essential for audio system manufacturers, interface developers, and multimedia technology providers seeking harmonized, interoperable digital audio interfaces compliant with MPEG encoding profiles. It supports a wide variety of AAC profiles such as LC, HE-AAC, HE-AAC v2, and their combinations with MPEG Surround, ensuring high fidelity and efficient digital audio streaming.

Key Topics

• Interface Specification
  Defines the transmission interface for non-linear PCM bitstreams based on IEC 60958, ensuring compatibility for MPEG-2 AAC and MPEG-4 AAC coded audio.

• AAC Profiles Covered

  • MPEG-2 AAC Low Complexity (LC)
  • MPEG-2 AAC LC with Spectral Band Replication (SBR)
  • MPEG-4 AAC profiles including AAC, HE-AAC, HE-AAC v2
  • Extensions combining AAC profiles with MPEG Surround spatial coding

• Data-Type-Dependent Information Fields
  Specifies new and revised data-type-dependent fields in the bitstream header (Pc bits) to clearly identify AAC profiles and features such as MPEG Surround integration.

• MPEG Surround Support
  Defines spatial audio coding techniques for efficient multichannel coding based on down-mixed mono/stereo signals plus spatial parameters, referenced by ISO/IEC 23003-1.

• Normative References Update
  Integrates key ISO/IEC standards for AAC and MPEG Surround to maintain consistency with related multimedia coding frameworks.

Applications

• Digital Audio Interface Development
  Facilitates design and implementation of digital audio converters, receivers, and transmitters that support non-linear PCM AAC formats.

• Consumer Electronics
  Enables high-quality digital audio streaming in devices such as digital TVs, Blu-ray players, home theater systems, and portable media players.

• Broadcast and Streaming Services
  Supports transmission protocols for MPEG AAC-coded audio streams in digital broadcasts, IPTV, and online streaming platforms.

• Audio Codec Integration
  Assists codec developers in ensuring compliant digital interfaces for advanced AAC profiles and spatial audio features.

• Audio System Interconnection
  Helps manufacturers standardize connections between audio processing units, ensuring interoperability across different brands and products.

Related Standards

• IEC 60958 – The baseline specification for digital audio interfaces used in consumer audio equipment, on which EN 61937-6 builds.

• ISO/IEC 13818-7 (MPEG-2 AAC) – Defines Advanced Audio Coding for MPEG-2 systems, detailing LC and SBR profiles.

• ISO/IEC 14496-3 (MPEG-4 AAC) – Specifies MPEG-4 Audio coding including LC, HE-AAC, and HE-AAC V2 profiles.

• ISO/IEC 23003-1 (MPEG Surround) – Describes technologies for multichannel audio coding using MPEG Surround, referenced in this standard for spatial audio support.

Summary

SIST EN 61937-6:2007/A1:2014 is a critical amendment enhancing the digital audio interface standards for non-linear PCM bitstreams encoded in MPEG-2 and MPEG-4 AAC formats. It brings detailed profile identification, seamless support of advanced AAC variants, and integration of MPEG Surround spatial audio coding to ensure interoperability and high-quality digital audio streaming. Audio system designers and manufacturers benefit from these standardized protocols to develop compatible and future-proof multimedia audio devices and interfaces.

Keywords: EN 61937-6, IEC 60958, non-linear PCM, MPEG-2 AAC, MPEG-4 AAC, digital audio interface, AAC profiles, HE-AAC, HE-AAC v2, MPEG Surround, digital audio transmission, audio systems standard, multimedia audio coding

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
Digitalni avdio - Vmesnik za nelinearne PCM-kodirane avdio bitne tokove po IEC
60958 - 6. del: Nelinearni PCM-bitni tokovi v avdio formatih MPEG-2 AAC in MPEG-
4 AAC (IEC 61937-6:2006/A1:2014)
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 audio formats (IEC 61937-6:2006/A1:2014)
Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung
von IEC 60958 -- Teil 6: Nichtlineare PCM-Bitströme nach MPEG-2 AAC- und MPEG-4
AAC-Audio-Formaten
Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire,
conformément à la CEI 60958 -- Partie 6: Flux de bits MIC non linéaire selon les formats
MPEG-2 AAC et MPEG-4 AAC
Ta slovenski standard je istoveten z: EN 61937-6:2006/A1:2014
ICS:
33.160.30 Avdio sistemi Audio systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61937-6/A1
NORME EUROPÉENNE
April 2014
EUROPÄISCHE NORM
ICS 33.160.60; 35.040
English version
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
(IEC 61937-6:2006/A1:2014)
Audionumérique -  Digitalton -
Interface pour les flux de bits audio à Schnittstelle für nichtlinear-PCM-codierte
codage MIC non linéaire, conformément Audio-Bitströme unter Verwendung von
à la CEI 60958 - IEC 60958 -
Partie 6: Flux de bits MIC non linéaire Teil 6: Nichtlineare PCM-Bitströme nach
selon les formats MPEG-2 AAC et MPEG- MPEG-2 AAC- und MPEG-4 AAC-
4 AAC Formaten
(CEI 61937-6:2006/A1:2014) (IEC 61937-6:2006/A1:2014)

This amendment A1 modifies the European Standard EN 61937-6:2006; it was approved by CENELEC on 2014-
03-05. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
the conditions for giving this amendment the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61937-6:2006/A1:2014 E

Foreword
The text of document 100/2052/CDV, future IEC 61937-6:2006/A1, prepared by Technical Area 4
"Digital system interfaces and protocols" of IEC/TC 100 "Audio, video and multimedia systems and
equipment" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be (dop) 2014-12-05
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-03-05
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61937-6:2006/A1:2014 was approved by CENELEC as a
European Standard without any modification.

- 3 - EN 61937-6:2006/A1:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

Replacement and addition in Annex ZA of EN 61937-6:2006:

Publication Year Title EN/HD Year
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
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 in
...