ISO/IEC 23001-8:2013/Amd 1:2015

Information technology — MPEG systems technologies — Part 8: Coding-independent code points — Amendment 1: New audio code points

Technologies de l'information — Technologies des systèmes MPEG — Partie 8: Points de code indépendants du codage — Amendement 1: .

General Information

• Status: Withdrawn
• Publication Date: 16-Jul-2015
• Withdrawal Date: 16-Jul-2015
• ICS: 35.040 - Information coding
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Drafting Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 26-Apr-2016

Relations

• Revised: ISO/IEC 23001-8:2016 - Information technology — MPEG systems technologies — Part 8: Coding-independent code points
• Effective Date: 05-Nov-2015
• Amends: ISO/IEC 23001-8:2013 - Information technology — MPEG systems technologies — Part 8: Coding-independent code points
• Effective Date: 09-May-2020

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 23001-8
First edition
2013-07-01
AMENDMENT 1
2015-07-15
Information technology — MPEG
systems technologies —
Part 8:
Coding-independent code points
AMENDMENT 1: New audio code points
Technologies de l’information — Technologies des systèmes MPEG —
Partie 8: Points de code indépendants du codage
AMENDEMENT 1: .
Reference number
ISO/IEC 23001-8:2013/Amd.1:2015(E)
©
ISO/IEC 2015

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ISO/IEC 23001-8:2013/Amd.1:2015(E)

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ii © ISO/IEC 2015 – All rights reserved

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ISO/IEC 23001-8:2013/Amd 1:2015(E)
Contents Page
1 Scope .1
2 Amendment Text .1
8.1 Definitions related to audio code points .1
8.2 Loudspeaker Index, Output Channel Position .2
8.3 Loudspeaker Layout Index, ChannelConfiguration .5
8.4 Loudspeaker Positioning .8
8.7 Range of Loudness.12
8.8 Top of Loudness Range .12
8.9 Maximum of Momentary Loudness level .12
8.10 Maximum of Short-Term Loudness level .12
8.11 Short-Term Loudness level .12
8.12 Peak level .12
8.13 Compressor Characteristic .13
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ISO/IEC 23001-8:2013/Amd 1:2015(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO/IEC 23001-8:2013 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia
information.
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ISO/IEC 23001-8:2013/Amd 1:2015(E)
Information technology — MPEG systems technologies —
Part 8: Coding independent code points, AMENDMENT 1:
Additional audio code points
1 Scope
This amendment adds new audio related code points to ISO/IEC 23001-8:2013.
2 Amendment Text
In clause 5, amend Table 1 as follow:
Table 1 — List of code point definitions
Name Description Subclause
[…] […] […]
OutputChannelPosition Audio channel assignment 8.2
Audio channel configuration 8.3
ChannelConfiguration
LoudspeakerGeometry Audio loudspeaker geometry 8.4
Audio loudspeaker elevation 8.4
LoudspeakerElevation
LoudspeakerAzimuth Audio loudspeaker azimuth 8.4
ProgramLoudness Audio program loudness level 8.5
Audio anchor content loudness level 8.6
AnchorLoudness
LoudnessRange Range of loudness 8.7
Top value of loudness range 8.8
LoudnessRangeTop
MomentaryLoudnessMax Maximum Loudness (400 ms window) 8.9
ShortTermLoudnessMax Maximum Loudness (3 s window) 8.10
ShortTermLoudness Loudness (3s window) 8.11
SamplePeakLevel Level of sample peak magnitude 8.12
Level of true peak 8.12
TruePeakLevel
DrcCharacteristic Index of DRC characteristic 8.13

In clause 8, replace text and Tables as follows:
8.1 Definitions related to audio code points
Loudspeaker
LS
a physical loudspeaker with a given geometric position relative to the listener and, if applicable, a label or
name
NOTE – Even though the loudspeaker names used in this document each describe one discrete loudspeaker
position, some loudspeaker signals may in practice be rendered on a loudspeaker array consisting of multiple
loudspeakers which are all driven with the same audio signal, for example in a theatrical setting.
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ISO/IEC 23001-8:2013/Amd 1:2015(E)
Loudspeaker Index
OutputChannelPosition
association of a loudspeaker geometric position to a given index according to 8.2
Loudspeaker Layout
set of loudspeakers with a specific constellation of geometric positions meant for authoring or play-back of
audio content
Loudspeaker Layout Index
ChannelConfiguration
association of a loudspeaker layout to a given index according to 8.3
Channel
Ch.
conceptual representation of an audio signal for coding or transmission as it may be used within the digital
signal processing chain of an audio codec
NOTE –A channel may correspond directly to one specific loudspeaker or it may carry an audio signal that is meant to be
further processed and played back on more than one loudspeaker by some means not further specified here.
8.2 Loudspeaker Index, Output Channel Position
Type: Unsigned integer, enumeration
Range: 0 – 127
OutputChannelPosition indicates the descriptive loudspeaker position in the 3D environment relative to the
listener.
For the purpose of this document the terms “loudspeaker” and “loudspeaker layout” is preferred over the
terms “channel” and “channel configuration” because the latter appear to be potentially codec-dependent.
Previous editions of this document and certain standards use these terms (channel, channel configuration)
and in their respective contexts should be understood synonymously to the terms loudspeaker and
loudspeaker layout.
When a speaker is indicated as being at an explicit position, the position is provided by some means outside
the scope of this specification. That might include signaling by azimuth, elevation, or distance or by some
other suitable means.
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ISO/IEC 23001-8:2013/Amd 1:2015(E)
Table 7 — Definition of Loudspeaker Index, OutputChannelPosition
OutputChan Loudspeaker position according to
Loudspeaker position
IEC 62574 :2011
nelPosition

Abbr. Name Abbr. Name
0 L Left front FL Front left
1 R Right front FR Front right
2 C Centre front FC Front centre
3 LFE Low frequency enhancement LFE1 Low frequency effects-1
4 Ls Left surround LS Left surround
5 Rs Right surround RS Right surround
6 Lc Left front centre FLc Front left centre
7 Rc Right front centre FRc Front right centre
8 Lsr Rear surround left BL Back left
9 Rsr Rear surround right BR Back right
10 Cs Rear centre BC Back centre
11 Lsd Left surround direct LSd Left surround direct
12 Rsd Right surround direct RSd Right surround direct
13 Lss Left side surround SL Side left
14 Rss Right side surround SR Side right
15 Lw Left wide front FLw Front left wide
16 Rw Right wide front FRw Front right wide
17 Lv Left front vertical height TpFL Top front left
18 Rv Right front vertical height TpFR Top front right
19 Cv Centre front vertical height TpFC Top front centre
20 Lvr Left surround vertical height rear TpBL Top back left
21 Rvr Right surround vertical height rear TpBR Top back right
22 Cvr Centre vertical height rear TpBC Top back centre
23 Lvss Left vertical height side surround TpSiL Top side left
24 Rvss Right vertical height side surround TpSiR Top side right
25 Ts Top centre surround TpC Top centre
26 LFE2 Low frequency enhancement 2 LFE2 Low frequency effects-2
27 Lb Left front vertical bottom BtFL Bottom front left
28 Rb Right front vertical bottom BtFR Bottom front right
29 Cb Centre front vertical bottom BtFC Bottom front centre
30 Lvs Left vertical height surround TpLS Top left surround
31 Rvs Right vertical height surround TpRS Top right surround
32 Reserved
33 Reserved
34 Reserved
35 Reserved
36 LFE3 Low frequency enhancement 3
37 Leos Left edge of screen
38 Reos Right edge of screen
39 Hwbcal half-way btw. centre of screen and left edge
of screen
40 Hwbcar half-way btw. centre of screen and right
edge of screen
41 Lbs Left back surround
42 Rbs Right back surround
43-125 Reserved Reserved
126 Expl Explicit position (see text)
127 Unknown / undefined

Figure 1 shows a subset of the loudspeaker positions in the 3D environment relative to the listener, with each
labelled with an abbreviation from Table 7. Loudspeakers lying on the innermost box are in the bottom level,
those on the middle box are in the middle level and those on the outermost box are in the top level. The
circles labelled Ts represent the top centre loudspeaker directly above the listener's position.
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ISO/IEC 23001-8:2013/Amd 1:2015(E)

a) General loudspeaker positions

b) Positions of screen-related loudspeakers
Figure 1 — Loudspeaker positions.
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ISO/IEC 23001-8:2013/Amd 1:2015(E)
8.3 Loudspeaker Layout Index, ChannelConfiguration
Name: ChannelConfiguration
Type: Unsigned integer, enumeration
Range: 0 – 63
The ChannelConfiguration specifies the loudspeaker layout. This defines the number of loudspeakers and
their associated positions. The name, abbreviation, and general position of each loudspeaker are informative
and can be deduced from Table 8. Due to historical reasons, loudspeaker names may correspond to different
geometrical positions or coordinates depending on the loudspeaker layouts in which they have been defined.
Unless otherwise noted, the list of loudspeaker names in Table 8 does not imply any particular order in which
corresponding channel signals are stored or transmitted in a certain coding scheme. If such an order is
required by a coding scheme, then the corresponding standard should mandate an order of channels within
the scope of its own specification.
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ISO/IEC 23001-8:2013/Amd 1:2015(E)
Table 8 — ChannelConfiguration, Loudspeaker Layout Index,
corresponding number of loudspeakers and
their associated positions
"Front/ informative
Ch.
Loudspea
ChannelCo Surr. Loudspeaker Names in Geometric position
ker is
nfiguration LFE" Loudspeaker Layout Azim., Elev.
abbrev.
LFE
notation NOTE 1
0 - any setup - - -
1 1/0.0 centre front C 0, 0 0
2 2/0.0 left front, L 30, 0 0
right front R -30, 0 0
3 3/0.0 centre front, C 0, 0 0
left front, L 30, 0 0
right front R -30, 0 0
4 3/1.0 centre front, C 0, 0 0
left front, L 30, 0 0
right front, R -30, 0 0
rear centre Cs 180, 0 0
5 3/2.0 centre front, C 0, 0 0
left front, L 30, 0 0
right front, R -30, 0 0
left surround, Ls 110, 0 0
right surround Rs -110, 0 0
6 3/2.1 centre front, C 0, 0 0
left front, L 30, 0 0
right front, R -30, 0 0
left surround, Ls 110, 0 0
right surround, Rs -110, 0 0
LFE LFE 0, -15 1
7 5/2.1 centre front, C 0, 0 0
left front centre, Lc 30, 0 0
right front centre, Rc -30, 0 0
left front, L 45, 0 0
right front, R -45, 0 0
left surround, Ls 110, 0 0
right surround, Rs -110, 0 0
LFE LFE 0, -15 1
8 1+1 channel1 N.A. N.A. 0
channel2 N.A. N.A. 0
9 2/1.0 left front, L 30, 0 0
right front, R -30, 0 0
rear centre Cs 180, 0 0
10 2/2.0 left front, L 30, 0 0
right front, R -30, 0 0
left surround, Ls 110, 0 0
right surround Rs -110, 0 0
11 3/3.1 centre front, C 0, 0 0
left front, L 30, 0 0
right front, R -30, 0 0
left surround, Ls 110, 0 0
right surround, Rs -110, 0 0
...