EN 61937-7:2005

Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 7: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and ATRAC-X formats

Specifies the method for the digital audio interface specified in EN 60958 to convey non-linear PCM bitstreams encoded in accordance with the ATRAC, ATRAC2/3 and ATRAC-X formats.

Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung von IEC 60958 - Teil 7: Nichtlineare PCM-Bitströme entsprechend ATRAC-, ATRAC2/3- und ATRAC-X-Formaten

Audionumérique - Interface pour les flux de bits audio à codage MIC (PCM) non linéaire conformément à la CEI 60958 - Partie 7: Flux de bits MIC (PCM) non-linéaire selon les formats ATRAC, 2/3 ATRAC et X-ATRAC

La CEI 61937-7:2004 spécifie la méthode pour l'interface audionumérique spécifiée dans la CEI 60958 pour acheminer des flux de bits MIC non linéaire codés selon les formats ATRAC, ATRAC2/3 et ATRAC-X. La présente deuxième édition annule et remplace la première édition parue en 2002. Cette édition constitue une révision technique. Elle contient les importantes modifications techniques suivantes: Dans cette édition, un nouveau type de données audio au format ATRAC-X est ajouté au aux formats ATRAC et ATRAC2/3. Les caractéristiques particulières, telles que les points de référence, la période de répétition, la méthode pour combler les intervalles entre flux et le temps de latence du décodage, sont spécifiées pour le type de données ATRAC-X.

Digitalni avdio – Vmesnik za nelinearne PCM-kodirane avdio bitne tokove po IEC 60958 – 7. del: Nelinearni PCM-bitni tokovi v formatih ATRAC, ATRAC2/3 in ATRAC-X (IEC 61937-7:2004)

Ta del standarda IEC 61937 določa metodo za digitalni avdio vmesnik, določen v standardu IEC 60958 za prenos nelinearnih PCM-kodiranih bitnih tokov v skladu s formati ATRAC, ATRAC2/3 in ATRAC-X.

General Information

• Status: Published
• Publication Date: 06-Sep-2005
• Withdrawal Date: 30-Jun-2008
• ICS: 29.120.70 - Relays
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Parallel Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 07-Sep-2005
• Completion Date: 07-Sep-2005
• Ref Project: SIST EN 61937-7:2006 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 -- Part 7: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and ATRAC-X formats

Relations

• Replaces: EN 61937-7:2002 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 7: Non-linear PCM bitstreams according to the ATRAC and ATRAC 2/3 formats
• Effective Date: 28-Jan-2023
• Amended By: EN 61937-7:2005/A1:2016 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 7: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and ATRAC-X formats (TA 4)
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2006
1DGRPHãþD
SIST EN 61937-7:2003
Digitalni avdio – Vmesnik za nelinearne PCM-kodirane avdio bitne tokove po IEC
60958 – 7. del: Nelinearni PCM-bitni tokovi v formatih ATRAC, ATRAC2/3 in ATRAC
-X (IEC 61937-7:2004)
Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC
60958 -- Part 7: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and
ATRAC-X formats
Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung
von IEC 60958 -- Teil 7: Nichtlineare PCM-Bitströme entsprechend ATRAC-, ATRAC2/3-
und ATRAC-X-Formaten
Audionumérique - Interface pour les flux de bits audio à codage MIC (PCM) non linéaire
conformément à la CEI 60958 -- Partie 7: Flux de bits MIC (PCM) non-linéaire selon les
formats ATRAC, 2/3 ATRAC et X-ATRAC
Ta slovenski standard je istoveten z: EN 61937-7:2005
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 61937-7
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2005

ICS 33.160.01 Supersedes EN 61937-7:2002

English version
Digital audio -
Interface for non-linear PCM encoded audio bitstreams
applying IEC 60958
Part 7: Non-linear PCM bitstreams according to
the ATRAC, ATRAC2/3 and ATRAC-X formats
(IEC 61937-7:2004)
Audionumérique -  Digitalton -
Interface pour les flux de bits audio Schnittstelle für nichtlinear-PCM-codierte
à codage MIC (PCM) non linéaire Audio-Bitströme unter Verwendung
conformément à la CEI 60958 von IEC 60958
Partie 7 : Flux de bits MIC (PCM) Teil 7: Nichtlineare PCM-Bitströme
non-linéaire selon les formats entsprechend ATRAC-, ATRAC2/3-
ATRAC, 2/3 ATRAC et X-ATRAC und ATRAC-X-Formaten
(CEI 61937-7:2004) (IEC 61937-7:2004)

This European Standard was approved by CENELEC on 2005-07-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61937-7:2005 E
Foreword
The text of the International Standard IEC 61937-7:2004, prepared by Technical Area 4, Digital
interfaces and protocols, of IEC TC 100, Audio, video and multimedia systems and equipment , was
submitted to the formal vote and was approved by CENELEC as EN 61937-7 on 2005-07-01 without
any modification.
This European Standard supersedes EN 61937-7:2002.
It includes the following significant technical changes with respect to EN 61937-7:2002:
a) a new audio data-type "ATRAC-X" is added to ATRAC and ATRAC2/3;
b) specific properties such as reference points, repetition period, the method of filling stream gaps,
and decoding latency are specified for the data-type ATRAC-X.
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) 2006-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-07-01

Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61937-7:2005 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61909 NOTE Harmonized as EN 61909:2000 (not modified).
__________
- 3 - EN 61937-7:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60958-1 - Digital audio interface EN 60958-1 2004
Part 1: General
1) 2)
IEC 60958-3 - Part 3: Consumer applications EN 60958-3 2003

1) 2)
IEC 61937-1 - Digital audio - Interface for non-linear EN 61937-1 2003
PCM encoded audio bitstreams applying
IEC 60958
Part 1: General
1) 2)
IEC 61937-2 - Part 2: Burst-info EN 61937-2 2003

1)
Undated reference.
2)
Valid edition at date of issue.

INTERNATIONAL IEC
STANDARD 61937-7
Second edition
2004-11
Digital audio –
Interface for non-linear PCM encoded
audio bitstreams applying IEC 60958 –
Part 7:
Non-linear PCM bitstreams according to
the ATRAC, ATRAC2/3 and ATRAC-X formats
 IEC 2004  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
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 61937-7  IEC:2004(E)
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative references .5
3 Terms, definitions and abbreviations .5
3.1 Definitions .5
3.2 Abbreviations .5
4 Mapping of the audio bitstream on to IEC 61937 .6
4.1 General .6
4.2 ATRAC, ATRAC2/3 and ATRAC-X burst-info .6
5 Format of ATRAC, ATRAC2/3 and ATRAC-X data-bursts .6
5.1 General .6
5.2 Audio data-bursts .7
5.2.1 The data ATRAC .7
5.2.2 Latency of ATRAC decoding.8
5.2.3 The data ATRAC2/3 .8
5.2.4 Latency of ATRAC2/3 decoding .9
5.2.5 The data ATRAC-X .10
5.2.6 Latency of ATRAC-X decoding .11

Bibliography.12

Figure 1 – ATRAC data-burst.7
Figure 2 – Latency of ATRAC decoding .8
Figure 3 – ATRAC2/3 data-burst .9
Figure 4 – Latency of ATRAC2/3 decoding.10
Figure 5 – ATRAC-X data-burst .10

Table 1 – Fields of burst-info .6
Table 2 – Data-type-dependent information for data-type ATRAC .7
Table 3 – Data-type-dependent information for data-type ATRAC2/3 .9
Table 4 – Data-type-dependent information for data-type ATRAC-X.11

61937-7  IEC:2004(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 7: Non-linear PCM bitstreams according to
the ATRAC, ATRAC2/3 and ATRAC-X formats

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61937-7 has been prepared by Technical Area 4: Digital system
interfaces and protocols, of IEC technical committee 100: Audio, video and multimedia
systems and equipment.
This second edition cancels and replaces the first edition published in 2002. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) In this edition, a new audio data-type of ATRAC-X is added to ATRAC and ATRAC2/3.
b) Specific properties such as reference points, repetition period, the method of filling stream
gaps, and decoding latency are specified for data-type of ATRAC-X.

– 4 – 61937-7  IEC:2
...