SIST EN 61937-12:2010

Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 12: Non-linear PCM bitstreams according to the DRA formats (IEC 61937-12:2010)

This part of IEC 61937 specifies the method for IEC 60958 to convey non-linear PCM bitstreams encoded in accordance with the DRA formats.

Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung von IEC 60958 - Teil 12: Nichtlineare PCM-Bitströme entsprechend DRA-Formaten (IEC 61937-12:2010)

Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire conformément à la CEI 60958 - Partie 12 : Flux de bits à codage MIC non linéaire conforme au format DRA (CEI 61937-12:2010)

La CEI 61937-12:2010 spécifie la méthode de la CEI 60958 pour acheminer des flux de bits MIC non linéaires codés selon les formats DRA. La présente version bilingue, publiée en 2010-10, correspond à la version anglaise. La version française de cette norme n'a pas été soumise au vote.

Digitalni avdio - Vmesnik za nelinearne PCM kodirane avdio bitne struje po IEC 60958 - 12. del: Bitne struje nelinearne PCM v formatih DRA (IEC 61937-12:2010)

Ta del IEC 61937 določa metodo za IEC 60958 za prenos nelinearne PCM bitne struje, kodirane v skladu z DRA formati.

General Information

• Status: Published
• Publication Date: 13-Oct-2010
• 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: 04-Oct-2010
• Due Date: 09-Dec-2010
• Completion Date: 14-Oct-2010
• Ref Project: EN 61937-12:2010 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 12: Non-linear PCM bitstreams according to the DRA formats

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61937-12:2010
01-november-2010
Digitalni avdio - Vmesnik za nelinearne PCM kodirane avdio bitne struje po IEC
60958 - 12. del: Bitne struje nelinearne PCM v formatih DRA (IEC 61937-12:2010)
Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC
60958 - Part 12: Non-linear PCM bitstreams according to the DRA formats (IEC 61937-
12:2010)
Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung
von IEC 60958 - Teil 12: Nichtlineare PCM-Bitströme entsprechend DRA-Formaten (IEC
61937-12:2010)
Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire
conformément à la CEI 60958 - Partie 12 : Flux de bits à codage MIC non linéaire
conforme au format DRA (CEI 61937-12:2010)
Ta slovenski standard je istoveten z: EN 61937-12:2010
ICS:
33.160.30 Avdio sistemi Audio systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 61937-12:2010 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61937-12:2010

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SIST EN 61937-12:2010

EUROPEAN STANDARD
EN 61937-12

NORME EUROPÉENNE
June 2010
EUROPÄISCHE NORM

ICS 33.160.30; 33.170


English version


Digital audio -
Interface for non-linear PCM encoded audio bitstreams
applying IEC 60958 -
Part 12: Non-linear PCM bitstreams according to the DRA formats
(IEC 61937-12:2010)


Audionumérique -  Digitalton – Schnittstelle für nichtlinear-
Interface pour les flux de bits audio PCM-codierte Audio-Bitströme
à codage MIC non linéaire unter Verwendung von IEC 60958 –
conformément à la CEI 60958 - Teil 12: Nichtlineare PCM-Bitströme
Partie 12 : Flux de bits à codage MIC entsprechend DRA-Formaten
non linéaire conforme au format DRA (IEC 61937-12:2010)
(CEI 61937-12:2010)




This European Standard was approved by CENELEC on 2010-06-01. 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, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

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

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61937-12:2010 E

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SIST EN 61937-12:2010
EN 61937-12:2010 - 2 -
Foreword
The text of document 100/1578/CDV, future edition 1 of IEC 61937-12, 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 61937-12 on 2010-06-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-03-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-06-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61937-12:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60958-1 NOTE  Harmonized as EN 60958-1.
IEC 60958-3 NOTE  Harmonized as EN 60958-3.
__________

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SIST EN 61937-12:2010
- 3 - EN 61937-12:2010
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  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 Series Digital audio interface EN 60958 Series


IEC 61937 Series Digital audio - Interface for non-linear PCM EN 61937 Series
encoded audio bitstreams
applying IEC 60958


IEC 61937-1 2007 Digital audio - Interface for non-linear PCM EN 61937-1 2007
encoded audio bitstreams
applying IEC 60958 -
Part 1: General


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

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SIST EN 61937-12:2010

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SIST EN 61937-12:2010
IEC 61937-12
®
Edition 1.0 2010-05
INTERNATIONAL
STANDARD


Digital audio – Interface for non-linear PCM encoded audio bitstreams applying
IEC 60958 –
Part 12: Non-linear PCM bitstreams according to the DRA formats


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
N
ICS 33.160.30; 33.170 ISBN 978-2-88910-934-0
® Registered trademark of the International Electrotechnical Commission

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SIST EN 61937-12:2010
– 2 – 61937-12 © IEC:2010(E)
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Terms and definitions .5
3.1 Terms and definitions .5
3.2 Abbreviations .6
3.3 Presentation convention .6
4 DRA burst-info.6
5 Format of DRA data-bursts .6
5.1 General .6
5.2 Pause data-burst.7
5.3 Audio data-bursts .7
5.3.1 DRA condition .7
5.3.2 DRA half-rate low sampling frequency condition .9
5.3.3 DRA quarter-rate low sampling frequency condition.11
Bibliography.14

Figure 1 – DRA data-burst .8
Figure 2 – Latency of DRA decoding.9
Figure 3 – DRA data-burst half-rate low sampling frequency.10
Figure 4 – Latency of DRA decoding half-rate low sampling frequency .11
Figure 5 – DRA data-burst quarter-rate low sampling frequency.12
Figure 6 – Latency of DRA decoding quarter-rate low sampling frequency .13

Table 1 – Fields of burst-info .6
Table 2 – Data-type-dependent information for data-type DRA.7
Table 3 – Repetition period of pause data-bursts .7

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SIST EN 61937-12:2010
61937-12 © IEC:2010(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 12: Non-linear PCM bitstreams according to the DRA 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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 61937-12 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
100/1578/CDV 100/1651/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.

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SIST EN 61937-12:2010
– 4 – 61937-12 © IEC:2010(E)
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.
A bilingual version of this publication may be issued at a later date.

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SIST EN 61937-12:2010
61937-12 © IEC:2010(E) – 5 –
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 12: Non-linear PCM bitstreams according to the DRA formats



1 Scope
This part of IEC 61937 specifies the method for IEC 60958 to convey non-linear PCM
bitstreams encoded in accordance with the DRA formats.
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 interface
IEC 61937 (all parts), Digital audio – Interface for non-linear PCM encoded audio bitstreams
applying IEC 60958
IEC 61937-1:2007, Digital audio – Interface for non-linear PCM encoded audio bitstreams
applying IEC 60958 – Part 1: General
IEC 61937-2, Digital audio – Interface for non-linear PCM encoded audio bitstreams
applying IEC 60958 – Part 2: Burst-info
3 Terms and definitions
For the purposes of this document, the following terms, definitions, abbreviations and
presentation conventions apply.
3.1 Terms and definitions
3.1.1
sub data-type
type of payload of the data-burst for use with the specified data-type
3.1.2
latency
delay time of an external audio decoder to decode a DRA data-burst
NOTE It is defined as the sum of two values of the receiving delay time and the decoding delay time.
3.1.3
length code
indicates the length of t
...