EN IEC 60958-5:2021

Digital audio interface - Part 5: Consumer application enhancement

IEC 60958-5:2021 enhances the consumer application of the interface for the interconnection of digital audio equipment defined in IEC 60958-1 and IEC 60958-3, introducing: - multichannel; - multi-stream; - high-resolution; - multimedia extension; - related applications.

Digitalton-Schnittstelle - Teil 5: Verbesserungen für den Allgemeingebrauch

Interface audionumérique - Partie 5: Amélioration de l'application grand public

L'IEC 60958-5:2021 a pour objet d'améliorer l'application grand public de l'interface destinée à l'interconnexion des appareils audionumériques définis dans l'IEC 60958-1 et l'IEC 60958-3, en introduisant les améliorations suivantes: - voies multiples; - multiflux; - haute résolution; - extension multimédia; - applications connexes.

Digitalni avdio vmesnik - 5. del: Izboljšanje potrošniških aplikacij (IEC 60958-5:2021)

General Information

• Status: Published
• Publication Date: 11-Mar-2021
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 33.160.30 - Audio systems
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 12-Mar-2021
• Completion Date: 12-Mar-2021
• Ref Project: SIST EN IEC 60958-5:2021 - Digital audio interface - Part 5: Consumer application enhancement (IEC 60958-5:2021)

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2021
Digitalni avdio vmesnik - 5. del: Izboljšanje potrošniških aplikacij (IEC 60958-
5:2021)
Digital audio interface - Part 5: Consumer application enhancement (IEC 60958-5:2021)
Digitalton-Schnittstelle - Teil 5: Verbesserungen für den Allgemeingebrauch (IEC 60958-
5:2021)
Interface audionumérique - Partie 5: Amélioration de l'application grand public (IEC
60958-5:2021)
Ta slovenski standard je istoveten z: EN IEC 60958-5:2021
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 IEC 60958-5

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS 33.160.01; 33.160.30
English Version
Digital audio interface - Part 5: Consumer application
enhancement
(IEC 60958-5:2021)
Interface audionumérique - Partie 5: Amélioration de Digitalton-Schnittstelle - Teil 5: Verbesserungen für den
l'application grand public Allgemeingebrauch
(IEC 60958-5:2021) (IEC 60958-5:2021)
This European Standard was approved by CENELEC on 2021-03-10. 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 CEN-CENELEC
Management Centre 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60958-5:2021 E

European foreword
The text of document 100/3449/CDV, future edition 1 of IEC 60958-5, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 60958-5:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-12-10
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-03-10
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 shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60958-5:2021 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:
ISO 9241-910:2011 NOTE Harmonized as EN ISO 9241-910:2011 (not modified)
IEC 61883-6:2014 NOTE Harmonized as EN 61883-6:2014 (not modified)
IEC 62574:2011 NOTE Harmonized as EN 62574:2011 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
1 2
IEC 60958-1 — Digital audio interface - Part 1: General EN IEC 60958-1 —
(TA 20)
3 4
IEC 60958-3 — Digital audio interface - Part 3: Consumer EN IEC 60958-3 —
applications (TA 20)
IEC 62574 2020 Audio, video and multimedia systems - - -
General channel assignment of
multichannel audio
ISO/IEC 23001-8 2016 Information technology - MPEG systems - -
technologies - Part 8:
Codingindependent code points
ITU-R BS.2094-1 2017 Common definitions for the audio - -
definition model
ITU-R BS.2051-2 2018 Advanced sound system for programme - -
production
Under preparation. Stage at the time of publication: IEC CCDV 60958-1:2021.
Under preparation. Stage at the time of publication: prEN IEC 60958-1:2021.
Under preparation. Stage at the time of publication: IEC CCDV 60958-3:2021.
Under preparation. Stage at the time of publication: prEN IEC 60958-3:2021.
This publication was withdrawn and replaced with ISO/IEC 23091-3:2018, ISO/IEC 23091-1:2018 and ISO/IEC
23091-2:2019.
IEC 60958-5 ®
Edition 1.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audio interface –
Part 5: Consumer application enhancement

Interface audionumérique –
Partie 5: Amélioration de l'application grand public

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.01; 33.160.30 ISBN 978-2-8322-9325-6

– 2 – IEC 60958-5:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Interface format . 9
5 Operation modes . 9
5.1 General . 9
5.2 Multichannel linear PCM operation mode . 9
5.3 One-bit audio operation mode . 10
5.4 High-precision multi-bit linear audio operation mode . 11
6 Channel status . 12
6.1 General . 12
6.2 Application . 12
6.2.1 Channel status general format . 12
6.2.2 Mode 0 channel status format for digital audio equipment for enhanced
consumer use . 13
7 Stream change . 16
Annex A (informative)  Audio and vibrotactile applications . 17
A.1 General . 17
A.2 Channel assignments of vibrotactile signals . 17
Annex B (informative)  Audio and MIDI application . 19
B.1 General . 19
B.2 Audio and MIDI 2.0 application . 19
Bibliography . 20

Figure 1 – Example: multichannel group and subgroups . 10
Figure 2 – One-bit audio subframe . 11
Figure 3 – 32/64-bit mode subframe. 11
Figure 4 – 32-bit mode frame . 11
Figure 5 – 64-bit mode frame . 12
Figure 6 – Switching from one linear PCM audio mode to the other linear PCM audio
mode . 16
Figure B.1 – Subframe format . 19

Table 1 – Example: multichannel group and subgroups . 10
Table 2 – Mode 0 channel status format for enhanced consumer use. 13
Table 3 – Multichannel configuration . 15
Table A.1 – Vibrotactile channel assignments . 17
Table B.1 – Audio and MIDI 2.0 order . 19

IEC 60958-5:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO INTERFACE –
Part 5: Consumer application enhancement

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.
IEC 60958-5 has been prepared by Technical Area 20: Analogue and digital audio, of IEC
Technical Committee 100: Audio, video and multimedia systems and equipment. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
100/3449/CDV 100/3517/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.

– 4 – IEC 60958-5:2021 © IEC 2021
A list of all parts in the IEC 60958 series, published under the general title Digital audio interface,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 60958-5:2021 © IEC 2021 – 5 –
INTRODUCTION
IEC 60958-3 edition 1.0 was released in 1999 specifying the consumer applications of the
interface for the inter-connection of digital audio equipment defined in IEC 60958-1. The
applications have enhanced their quality including multichannel modes, high-precision bit length,
and multi-stream modes. These enhancements imply a new part in the IEC 60958 series,
appropriately keeping backward compatibility with IEC 60958-3 and providing a new enhanced
digital audio interface.
– 6 – IEC 60958-5:2021 © IEC 2021
DIGITAL AUDIO INTERFACE –
Part 5: Consumer application enhancement

1 Scope
This part of IEC 60958 enhances the consumer application of the interface for the
interconnection of digital audio equipment defined in IEC 60958-1 and IEC 60958-3, introducing:
– multichannel;
– multi-stream;
– high-resolution;
– multimedia extension;
– related applications.
NOTE IEC 60958-3 specifies a consumer application to carry stereophonic programmes with a resolution of up to
24 bits per sample. This part of IEC 60958 enhances the application, allowing programmes with up to 64 channels,
64 bits per sample, and two simultaneous streams.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 60958-1:20— , Digital audio interface – Part 1: General
IEC 60958-3:20— , Digital audio interface – Part 3: Consumer applications
IEC 62574:2020, Audio, video and multimedia systems – General channel assignment of
multichannel audio
ISO/IEC 23001-8:2016, Information technology – MPEG systems technologies – Part 8: Coding-
independent code points
ITU-R BS.2094-1:2017, Common definitions for the audio definition model
ITU-R BS.2051-2:2018, Advanced sound system for programme production
—————————
Under preparation. Stage at the time of publication: IEC CCDV 60958-1:2021.
Under preparation. Stage at the time of publication: IEC CCDV 60958-3:2021.
This publication was withdrawn and replaced with ISO/IEC 23091-3:2018, ISO/IEC 23091-1:2018 and ISO/IEC
23091-2:2019.
IEC 60958-5:2021 © IEC 2021 – 7 –
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
one-bit audio
one-bit length audio data stream
Note 1 to entry: A one-bit audio data stream can be directly played back through the analogue low-pass filter bit by
bit (MSB first).
3.2
high-precision multi-bit linear audio
linear PCM audio data longer than 25 bits length per sample
Note 1 to entry: This document supports 32- and 64-bit lengths.
3.3
sampling frequency
frequency of the samples representing an audio signal.
Note 1 to entry: When more than one signal is transmitted through the same interface, the sampling frequencies
are identical.
[SOURCE: IEC 60958-1:20—, 3.1]
3.4
audio sample word
value of a digital audio sample
Note 1 to entry: Representation is linear in 2's complement binary form.
Note 2 to entry: Positive numbers correspond to positive analogue voltages at the input of the analogue-to-digital
converter (ADC).
[SOURCE: IEC 60958-1: 20—, 3.2]
3.5
channel status
data carrying, in a fixed format, information associated with each main data field channel, which
is decodable by any interface user.
Note 1 to entry: IEC 60958-3 specifies the mode 0 channel status format for digital audio equipment for consumer
use.
EXAMPLE 1 Length of audio sample words.
EXAMPLE 2 Sampling frequency.
[SOURCE: IEC 60958-1:20—, 3.5, modified – Modification of the Note to entry, and addition of
two examples.]
3.6
preamble
specific patterns used for synchronization.

– 8 – IEC 60958-5:2021 © IEC 2021
Note 1 to entry: There are three different preambles: “B”; “M”; and “W”.
[SOURCE: IEC 60958-1:20—, 3.8, modified – Modification of the Note to entry.]
3.7
sub-frame
fixed structure used to carry information
[SOURCE: IEC 60958-1:20—, 3.9]
3.8
frame
sequence of two successive and associated sub-frames
[SOURCE: IEC 60958-1:20—, 3.10]
3.9
block
group of 192 consecutive frames
Note 1 to entry: The start of a block is designated by a special sub-frame preamble.
[SOURCE: IEC 60958-1:20—, 3.11]
3.10
channel number
number that shows channel order in two-channel operation mode
3.11
channel label ID
label of ID
[SOURCE: IEC 62574:2020, 3.73]
3.11.1
multichannel number
number that identifies multichannel addressing
Note 1 to entry: Same as IEC 62574 channel number
3.12
multichannel group
group composed of one or two multichannel subgroups
3.13
multichannel count
count of channels in a multichannel group
3.14
multichannel subgroup
subgroup, in a multichannel group, composed of several multichannel
Note 1 to entry: Multichannel subgroup A is set according to multichannel configuration.
Note 2 to entry: Multichannel subgroup B is set according to multichannel map.
3.15
multichannel configuration
configuration of multichannel addressing

IEC 60958-5:2021 © IEC 2021 – 9 –
3.16
multichannel order
order of multichannel in a multichannel group
3.17
multichannel map
map of multichann
...