IEC 61937-5:2006

Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater Systems) format(s)

audio bitstreams encoded according to the Digital Theater Systems (DTS) format data-types I, II, III, and IV.

General Information

• Status: Published
• Publication Date: 25-Jan-2006
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.60 - Multimedia systems and teleconferencing equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 28-Feb-2006
• Completion Date: 26-Jan-2006

Relations

• Amended By: IEC 61937-5:2006/AMD1:2019 - Amendment 1 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater Systems) format(s)
• Effective Date: 05-Sep-2023
• Revises: IEC 61937-5:2002 - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater Systems) format(s)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 61937-5
Second edition
2006-01
Digital audio –
Interface for non-linear PCM encoded
audio bistreams applying IEC 60958 –
Part 5:
Non-linear PCM bitstreams according to
the DTS (Digital Theater Systems) format(s)

Reference number
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INTERNATIONAL IEC
STANDARD 61937-5
Second edition
2006-01
Digital audio –
Interface for non-linear PCM encoded
audio bistreams applying IEC 60958 –
Part 5:
Non-linear PCM bitstreams according to
the DTS (Digital Theater Systems) format(s)

 IEC 2006  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 P
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 61937-5  IEC:2006(E)
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative references .5
3 Terms, definitions, abbreviations and presentation convention .5
3.1 Terms and definitions .5
3.2 Abbreviations .5
3.3 Presentation convention .6
4 Mapping of the audio bitstream on to IEC 61937-1 .6
4.1 DTS burst-info.6
5 Format of DTS data-bursts .6
5.1 General .6
5.2 Pause data-burst.6
5.3 Audio data-bursts .7

Annex A (informative) Effect of repetition period of data burst and Fs on frame period
and maximum data rate in DTS type IV .14

Bibliography.15

Table 1 – Fields of burst-info .6
Table 2 – Repetition period of the pause data-bursts .7
Table 3 – Data-type-dependent when DTS type I .7
Table 4 – Data-type-dependent when DTS type II .9
Table 5 – Data-type-dependent when DTS type III .10
Table 6 – Data-type-dependent when DTS type IV.12
Table A.1 – DTS type IV payload and frame repetition: some examples .14

61937-5  IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 5: Non-linear PCM bitstreams according to
the DTS (Digital Theater Systems) format(s)

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 61937-5 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) References to the company name Digital Theater Systems have been changed to DTS
which is consistent with the official change of the company name.

– 4 – 61937-5  IEC:2006(E)
b) DTS type IV has been added to Table 1 and 5.3.4 describing type IV has been added.
c) Annex A, which provides examples of the use of the repetition period parameter
introduced in subclause 5.3.4, has been added.
The text of this standard is based on the following documents:
CDV Report on voting
100/974/CDV 100/1055/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.
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 bitstreams according to the AC-3 format
Part 4: Non-linear PCM bistreams according to the MPEG audio formats
Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater Systems) format(s)
Part 6: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and ATRAC-X
formats
Part 8: Non-linear PCM bitstreams according to the Windows Media Audio Professional
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.

—————————
To be published.
61937-5  IEC:2006(E) – 5 –
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –

Part 5: Non-linear PCM bitstreams according to
the (Digital Theater Systems) DTS format(s)

1 Scope
This part of IEC 61937 describes audio bitstreams encoded according to the Digital Theater
Systems (DTS) format data-types I, II, III, and IV.
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 60958-1, Digital audio interface – Part 1: General
IEC 60958-3, Digital audio interface – Part 3: Consumer applications
IEC 60958-4, Digital audio interface – Part 4: Professional applications
IEC 61937-1, 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 Information
3 Terms, definitions, abbreviations and presentation convention
For the purposes of this document, the following terms, definitions, abbreviations and
presentation convention apply.
3.1 Definitions
3.1.1
latency
delay time of an external audio decoder to decode a DTS data-burst, defined as the sum of
two values of the receiving delay time and the decoding delay time
3.2 Abbreviations
IEC International Electrotechnical Commission
ISO/IEC MPEG The Moving Pictures Expert Group, a joint committee of ISO and IEC

– 6 – 61937-5  IEC:2006(E)
3.3 Presentation convention
F872h Value ‘F872’ in hexadecimal format

4 Mapping of the audio bitstream on to IEC 61937-1
The coding of the bitstream and data-burst is in accordance with IEC 61937-1 and 61937-2.
4.1 DTS burst-info
The 16-bit burst-info contains information about the data which will be found in the data-burst.
Table 1 – Fields of burst-info
Bits of Reference Repetition period of data-burst
Value Contents
Pc point R in IEC 60958 frames
0-4 Data-type
0-10 According to IEC 61937
11 DTS type I Bit 0 of Pa 512
12 DTS type II Bit 0 of Pa 1 024
13 DTS type III Bit 0 of Pa 2 048
14-16 According to IEC 61937
17 DTS type IV Dependent on bits 8-10
14-31 According to IEC 61937 Bit 0 of Pa
5, 6 Reserved
7 According to IEC 61937
Reserved for DTS types I, II and III
8-10
For the repetition period for DTS type
IV, see Table 6
11, 12 Reserved
13-15 According to IEC 61937
5 Format of DTS data-bursts
This clause specifies the audio data-bursts DTS type I, DTS type II, DTS type III and DTS
type IV. Specific properties such as reference points, repetition period, the method of filling
stream gaps, and decoding latency are specified for each data-type.
5.1 General
The decoding latency (or delay), indicated for the data-types, should be used by the
transmitter to schedule data-bursts as necessary to establish
...

IEC 61937-5 ®
Edition 2.1 2019-01
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying
IEC 60958 –
Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater
Systems) format(s)
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IEC 61937-5 ®
Edition 2.1 2019-01
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying

IEC 60958 –
Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater

Systems) format(s)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.60 ISBN 978-2-8322-6483-6

IEC 61937-5 ®
Edition 2.1 2019-01
CONSOLIDATED VERSION
REDLINE VERSION
colour
inside
Digital audio – Interface for non-linear PCM encoded audio bitstreams applying
IEC 60958 –
Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater
Systems) format(s)
– 2 – IEC 61937-5:2006+AMD1:2019 CSV
 IEC 2019
CONTENTS
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, abbreviations and presentation convention . 5
3.1 Definitions . 5
3.2 Abbreviations . 5
3.3 Presentation convention . 6
4 Mapping of the audio bitstream on to IEC 61937-1 . 6
4.1 DTS burst-info . 6
5 Format of DTS data-bursts . 6
5.1 General . 6
5.2 Pause data-burst . 6
5.3 Audio data-bursts . 7
5.3.1 DTS type I . 7
5.3.2 DTS type II . 8
5.3.3 DTS type III . 9
5.3.4 DTS type IV . 11
5.3.5 DTS type IV profile definitions . 13
Annex A (informative) Effect of repetition period of data burst and Fs on frame period
and maximum data rate in DTS type IV . 17

Figure 1 – DTS type I data-burst . 7
Figure 2 – Latency of DTS type II decoding . 8
Figure 3 – DTS type II data-burst . 8
Figure 4 – Latency of DTS type II decoding . 9
Figure 5 – DTS type III data-burst . 10
Figure 6 – Latency of DTS type III decoding . 11
Figure 7 – DTS type IV single data-burst mode . 13
Figure 8 – Decoder latency of DTS type IV decoding single burst mode . 14
Figure 9 – DTS type IV multi-burst mode . 15
Figure 10 – Decoder latency for DTS type IV multi-burst mode . 16

Table 1 – Fields of burst-info . 6
Table 2 – Repetition period of the pause data-bursts . 7
Table 3 – Data-type-dependent when DTS type I . 7
Table 4 – Data-type-dependent when DTS type II . 9
Table 5 – Data-type-dependent when DTS type III . 10
Table 6 – Data-type-dependent when information for DTS type IV . 12
Table 7 – Bits of multi-burst control byte . 15
Table A.1 – DTS type IV payload and frame repetition: some examples . 17

 IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL AUDIO –
INTERFACE FOR NON-LINEAR PCM ENCODED
AUDIO BITSTREAMS APPLYING IEC 60958 –
Part 5: Non-linear PCM bitstreams according to
the DTS (Digital Theater Systems) format(s)
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.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61937-5 edition 2.1 contains the second edition (2006-01) [documents 100/974/CDV
and 100/1055/RVC] and its amendment 1 (2019-01) [documents 100/3101/CDV and
100/3163/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
– 4 – IEC 61937-5:2006+AMD1:2019 CSV
 IEC 2019
International Standard IEC 61937-5 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 constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition.
a) References to the company name Digital Theater Systems have been changed to DTS
which is consistent with the official change of the company name.
b) DTS type IV has been added to Table 1 and 5.3.4 describing type IV has been added.
c) Annex A, which provides examples of the use of the repetition period parameter
introduced in subclause 5.3.4, has been added.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 bitstreams according to the AC-3 format
Part 4: Non-linear PCM bistreams according to the MPEG audio formats
Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater Systems) format(s)
Part 6: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and ATRAC-X
formats
Part 8: Non-linear PCM bitstreams according to the Windows Media Audio Professional
The committee has decided that the contents of the base publication and its amendment 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 may be issued at a later date.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
—————————
To be published.
 IEC 2019
DIGITAL AUDIO –
INTERFA
...