SIST EN 61937-4:2003

Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 -- Part 4: Non-linear PCM bitstreams according to the MPEG audio format

specifies the method for the digital audio interface specified in EN 60958 to convey non-linear PCM bitstreams encoded in accordance with the MPEG audio.

Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung von IEC 60958 -- Teil 4: Nichtlineare PCM-Bitströme nach den MPEG-Ton-Formaten

Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire conformément à la CEI 60958 -- Partie 4: Flux de bits PCM non-linéaire selon le format audio MPEG

La CEI 61937-4:2003 spécifie la méthode pour l'interface audionumérique spécifiée dans la CEI 60958 pour acheminer des flux de bits MIC non linéaire codés selon le format MPEG audio.

Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 4: Non-linear PCM bitstreams according to the MPEG audio format (IEC 61937-4:2003)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• 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: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: EN 61937-4:2003 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 4: Non-linear PCM bitstreams according to the MPEG audio format

Relations

• Replaces: SIST EN 61937:2003 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958
• Effective Date: 29-Jan-2023
• Revised: SIST EN 61937:2003 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958
• Effective Date: 13-May-2010
• Replaces: SIST EN 61937:2003 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61937-4:2003
01-december-2003
1DGRPHãþD
SIST EN 61937:2003
Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC
60958 - Part 4: Non-linear PCM bitstreams according to the MPEG audio format
(IEC 61937-4:2003)
Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC
60958 -- Part 4: Non-linear PCM bitstreams according to the MPEG audio format
Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung
von IEC 60958 -- Teil 4: Nichtlineare PCM-Bitströme nach den MPEG-Ton-Formaten
Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire
conformément à la CEI 60958 -- Partie 4: Flux de bits PCM non-linéaire selon le format
audio MPEG
Ta slovenski standard je istoveten z: EN 61937-4:2003
ICS:
33.160.30 Avdio sistemi Audio systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 61937-4:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

SIST EN 61937-4:2003

---------------------- Page: 2 ----------------------

SIST EN 61937-4:2003
EUROPEAN STANDARD EN 61937-4
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2003

ICS 33.160.30


English version


Digital audio -
Interface for non-linear PCM encoded audio bitstreams
applying IEC 60958
Part 4: Non-linear PCM bitstreams according to the MPEG audio format
(IEC 61937-4:2003)


Audionumérique -  Digitalton -
Interface pour les flux de bits audio Schnittstelle für nichtlinear-PCM-codierte
à codage MIC non linéaire Audio-Bitströme unter Verwendung
conformément à la CEI 60958 von IEC 60958
Partie 4 : Flux de bits PCM non-linéaire Teil 4: Nichtlineare PCM-Bitströme
selon le format audio MPEG nach den MPEG-Ton-Formaten
(CEI 61937-4:2003) (IEC 61937-4:2003)





This European Standard was approved by CENELEC on 2003-06-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard 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 Central Secretariat or to any CENELEC member.

This European Standard 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61937-4:2003 E

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

SIST EN 61937-4:2003
EN 61937-4:2003 - 2 -
Foreword

The text of document 100/647/FDIS, future edition 1 of IEC 61937-4, prepared by IEC TC 100, Audio,
video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 61937-4 on 2003-06-01.

The following dates were fixed:

– latest date by which the EN has to be implemented
 at national level by publication of an identical
 national standard or by endorsement (dop) 2004-03-01

– latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2006-06-01

Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________

Endorsement notice

The text of the International Standard IEC 61937-4:2003 was approved by CENELEC as a European
Standard without any modification.
__________

---------------------- Page: 4 ----------------------

SIST EN 61937-4:2003
- 3 - EN 61937-4:2003
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60958 Seris Digital audio interface EN 60958 Series

1) 2)
IEC 61937-1 - Digital audio - Interface for non-linear EN 61937-1 -
PCM encoded audio bitstreams applying
IEC 60958
Part 1: General




1)
Undated reference.
2)
To be published.

---------------------- Page: 5 ----------------------

SIST EN 61937-4:2003

---------------------- Page: 6 ----------------------

SIST EN 61937-4:2003
INTERNATIONAL IEC
STANDARD 61937-4
First edition
2003-05
Digital audio –
Interface for non-linear PCM encoded
audio bitstreams applying IEC 60958 –
Part 4:
Non-linear PCM bitstreams
according to the MPEG audio format
© IEC 2003 ⎯ Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale M
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
For price, see current catalogue

---------------------- Page: 7 ----------------------

SIST EN 61937-4:2003
– 2 – 61937-4 © IEC:2003(E)
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
3.1 Definitions . 5
3.2 Abbreviations. 5
3.3 Presentation convention . 6
4 Mapping of the audio bitstream on to IEC 61937. 6
5 Format of MPEG audio data-burst. 6
5.1 General . 6
5.2 Pause data-burst . 6
5.3 Audio data-types. 7
5.3.1 MPEG-1 layer-1 . 7
5.3.2 MPEG-1 layer-2 or -3, or MPEG-2 without extension. 7
5.3.3 MPEG-2 with extension. 8
5.3.4 MPEG-2 layer-1 low sampling frequency.10
5.3.5 MPEG-2 layer-2 Low sampling frequency.11
5.3.6 MPEG-2 layer-3 low sampling frequency.11
Bibliography.13
Figure 1 – MPEG-1 layer-1 data-burst. 7
Figure 2 – Data-burst with MPEG-1 layer 2 or 3 or MPEG-2 without extension . 8
Figure 3 – Latency of MPEG-1 layer 2 or 3 or MPEG-2 without extension . 8
Figure 4 – Format of MPEG-base-frame and MPEG-extension-frame . 9
Figure 5 – MPEG 2 with extension data-burst. 9
Figure 6 – Latency of MPEG-2 with extension .10
Figure 7 – MPEG-2 layer-1 low sampling frequency data-burst.10
Figure 8 – MPEG-2 layer-2 low sampling frequency data-burst.11
Figure 9 – MPEG-2 layer-3 low sampling frequency data-burst.12
Table 1 – Fields of burst-info.6
Table 2 – Repetition period of pause data-bursts . 7
Table 3 – Data-type-dependent info for data-types 5 and 6 . 9

---------------------- Page: 8 ----------------------

SIST EN 61937-4:2003
61937-4 © IEC:2003(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –
Part 4: Non-linear PCM bitstreams
according to the MPEG audio formats
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61937-4 has been prepared by technical area 4: Digital system
interfaces, of IEC technical committee 100: Audio, video and multimedia systems and
equipment.
This standard cancels and replaces IEC 61937, published in 2000, which has been divided
into four parts (see below). This first edition constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
100/647/FDIS 100/673/RVD
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.

---------------------- Page: 9 ----------------------

SIST EN 61937-4:2003
– 4 – 61937-4 © IEC:2003(E)
IEC 61937 consists of the following parts under the general title Digital audio – Interface for
non-linear PCM encoded audio bitstreams applying IEC 60958:
Part 1: General
Part 2: Burst-info
Part 3: Non-linear PCM bistreams according to the AC-3 format
Part 4: Non-linear PCM bitstreams according to the MPEG audio formats
Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theatre Systems) format(s)
Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC format
Part 7: Non-linear PCM bitstreams according to the ATRAC and ATRAC2/3 formats
The committee has decided that the contents of this publication will remain unchanged until
October 2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of March 2004 have been included in this copy.

---------------------- Page: 10 ----------------------

SIST EN 61937-4:2003
61937-4 © IEC:2003(E) – 5 –
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –
Part 4: Non-linear PCM bitstreams
according to the MPEG audio formats
1 Scope
This part of IEC 61937 specifies the method for the digital audio interface specified in
IEC 60958 to convey non-linear PCM bitstreams encoded in accordance with the MPEG
audio.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60958 (all parts), Digital audio interfac
...