IEC 60958-4-1:2016

Digital audio interface - Part 4-1: Professional applications - Audio content

IEC 60958-4-1:2016 specifies the format for coding audio used for the audio content. Together with IEC 60958-1, IEC 60958-4-2, and IEC 60958-4-4, it specifies an interface for serial digital transmission of two channels of periodically sampled and linearly represented digital audio data from one transmitter to one receiver. This first edition, together with IEC 60958-4-2 and IEC 60958-4-4, cancels and replaces IEC 60958-4 published in 2003 and its Amendment 1:2008 and constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60958-4:2003 with its Amendment 1:2008:
- support for a wider range of physical media;
- support for a wider range of audio sampling frequencies;
- deprecation of "minimum implementation" of channel status data.

Interface audionumérique - Partie 4-1: Applications professionnelles - Contenu audio

L'IEC 60958-4-1:2016 spécifie le format de codage audio utilisé pour le contenu audio. Cette partie, avec l'IEC 60958-1, l'IEC 60958-4-2 et l'IEC 60958-4-4, précise une interface de transmission numérique en série de deux voies de données audionumériques échantillonnées de façon périodique et représentées de façon linéaire entre un émetteur et un récepteur. Cette première édition, avec l'IEC 60958-4-2 et l'IEC 60958-4-4, annule et remplace l'IEC 60958-4 parue en 2003 et l'Amendement 1:2008 et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'IEC 60958-4:2003 et son Amendement 2008:
- prise en charge d'une gamme plus large de supports physiques;
- prise en charge d'une gamme plus large de fréquences d'échantillonnage audio;
- "mise en oeuvre minimale" des données de la voie de signalisation déconseillée.

General Information

• Status: Published
• Publication Date: 23-Mar-2016
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.100 - Electromagnetic compatibility (EMC)
• ICS: 33.160.30 - Audio systems
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 30-Apr-2016
• Completion Date: 24-Mar-2016

Relations

• Replaces: IEC 60958-4:2003/AMD1:2008 - Amendment 1 - Digital audio interface - Part 4: Professional applications
• Effective Date: 05-Sep-2023
• Replaces: IEC 60958-4:2003 - Digital audio interface - Part 4: Professional applications
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60958-4-1 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audio interface –
Part 4-1: Professional applications – Audio content

Interface audionumérique –
Partie 4-1: Applications professionnelles – Contenu audio

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IEC 60958-4-1 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Digital audio interface –
Part 4-1: Professional applications – Audio content

Interface audionumérique –
Partie 4-1: Applications professionnelles – Contenu audio

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.30 ISBN 978-2-8322-3232-3

– 2 – IEC 60958-4-1:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
4 Audio content . 7
4.1 Audio content coding . 7
4.2 PCM polarity . 7
4.3 Coding precision options . 7
4.4 Intermediate coding precision . 8
4.5 Non-audio content . 8
4.6 DC content . 8
5 Sampling frequency . 8
5.1 Channel interdependency . 8
5.2 Choice of sampling frequency . 8
6 Validity bit . 8
6.1 Channel validity usage . 8
6.2 Independent channel validity . 8
7 Pre-emphasis . 8
7.1 Pre-emphasis characteristic . 8
7.2 Pre-emphasis indication . 9
Bibliography . 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION
_______________
DIGITAL AUDIO INTERFACE –
Part 4-1: Professional applications – Audio content

FOREWORD
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International Standard IEC 60958-4-1 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 first edition, together with IEC 60958-4-2 and IEC 60958-4-4, cancels and replaces
IEC 60958-4 published in 2003 and its Amendment 1:2008 and constitutes a technical
revision.
This edition includes the following significant technical changes with respect to
IEC 60958-4:2003 with its Amendment 1:2008:
a) support for a wider range of physical media;
b) support for a wider range of audio sampling frequencies;
c) deprecation of “minimum implementation” of channel status data.

– 4 – IEC 60958-4-1:2016 © IEC 2016
The text of this standard is based on the following documents:
CDV Report on voting
100/2452/CDV 100/2581/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.
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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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
INTRODUCTION
The two-channel digital audio interface has been widely used in a variety of professional
audio applications that have reached beyond the vision of the original standard. In particular,
applications using increased sampling frequencies and alternative physical media.
Separating the standard into independently-maintainable parts a
...