IIEC TR 61292-1:2022 which is a Technical Report, applies to optical components of optical fibre amplifiers (OFAs). This document provides information about the most relevant parameters of these optical components, especially for erbium doped fibre amplifiers (EDFAs) and fibre Raman amplifiers (FRAs). It provides introductory information for a better understanding operation and applications of EDFAs and FRAs. NOTE IEC TR 61292-6 provides more technical information on FRAs. This third edition cancels and replaces the second edition published in 2009. This edition constitutes a technical revision.  This edition includes the following significant technical changes with respect to the previous edition:  
Change of document title from "Parameters of amplifier components" to "Parameters of optical fibre amplifier components";
Addition of parameters for optical components used in fibre Raman amplifiers;
Addition of Table 1, listing various documents that specify terms and definitions for optical components used in optical fibre amplifiers;
Addition of Figure 2 and Figure 3, showing typical component layouts for distributed and lumped fibre Raman amplifiers;
Harmonization of the descriptions of optical component parameters with the definitions in other standards on optical components.

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IEC 63033-2:2022 is available as IEC 63033-2:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 63033-2:2022 specifies recording methods of the surround view system that is specified in IEC 63033-1 in order to view the video file recorded with "free eye point" technology. IEC 63033-2:2022 cancels and replaces the first edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) updates to the text and the title to reflect the change of the scope of the IEC 63033 series.

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IEC 63033-3:2022 is available as IEC 63033-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 63033-3:2022 specifies measurement methods for the surround view system specified in IEC 63033-1. IEC 63033-3:2022 cancels and replaces the first edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) updates to the text and the title to reflect the change of the scope of the IEC 63033 series.

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IEC 63033-1:2022 specifies the model for generating the surrounding visual image of the surround view system.
IEC 63033-1:2022 cancels and replaces IEC TS 63033-1 published in 2017. This edition constitutes a technical revision.

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IEC 63033-4:2022 specifies which composite images generated from the multiple cameras of the surround view system specified in IEC 63033-1 comprise the FOV, and which display requirements specified in UN Regulation No. 46 apply.

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This part of IEC 60958 specifies the consumer application of the interface for the inter connection of digital audio equipment defined in IEC 60958-1.
NOTE When used in a consumer digital processing environment, the interface is primarily intended to carry stereophonic programmes, with a resolution of up to 20 bits per sample, an extension to 24 bits per sample being possible.

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This document specifies the methods for measuring the battery duration at defined sound pressure levels for continuous music playback of battery powered loudspeaker equipment. A primary battery or secondary battery can be used as a power source for the loudspeaker and its composite equipment. In case of composite equipment this method for the measurement of  battery duration can be applied under the condition of powered loudspeaker playback only. NOTE Loudspeakers designed for short hearing distance are not in the scope of this document.

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This part of IEC 63087 specifies requirements, and the associated methods of measurement,
for the electroacoustic performance of personal listening systems.
This document specifies requirements for the provision of assistive listening in audio, video and
multimedia systems and equipment. The requirements are of different kinds, because of the
diversity of the hardware concerned. Existing IEC standards for methods of measurement are
normatively referenced if they exist. Methods of measurement and performance requirements
are specified in IEC 63087-21.
This document does not apply to hearing aids. Also excluded are devices entirely worn on or in
the ear, which cannot be measured independently.

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This part of IEC 60958 describes a serial, uni-directional, self-clocking interface for the
interconnection of digital audio equipment for consumer and professional applications.
It provides the basic structure of the interface. Separate documents define items specific to
particular applications.
The interface is primarily intended to carry monophonic or stereophonic programmes, encoded
using linear PCM and with a resolution of up to 24 bits per sample.
When used for other purposes, the interface is able to carry audio data coded other than as
linear PCM coded audio samples. Provision is also made to allow the interface to carry data
related to computer software, multimedia technologies, or signals coded using non-linear PCM.
The format specification for these applications is not part of this document.
The interface is intended for operation at audio sampling frequencies of 32 kHz and above.
Auxiliary information is transmitted along with the programme.

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IEC 60728-115:2022 is applicable to in-building optical transmission systems for broadcast signal transmission that consist of optical transmitters, optical amplifiers, splitters, V-ONUs, etc. These systems are primarily intended for television and sound signals using digital transmission technology. This document specifies the basic system parameters and methods of measurement for in-building optical distribution systems between building network interfaces (BNI) and home network interfaces (HNI) in order to assess the system's performance and its performance limits.
This document is also applicable to broadcast signal transmission using a telecommunication network if it satisfies the requirements of the optical portion of this document. This document describes RF transmission for fully digitalized broadcast and narrowcast (limited area distribution of broadcast) signals over an FTTH network and introduces the X-PON system as a physical layer media. The detailed description of the physical layer is out of the scope of this document. The scope is limited to RF signal transmission over optical networks; thus, it does not include IP transport technologies, such as IP multicast and associated protocols.
This document specifies the required system performance of all-optical building networks in order to establish connections with FTTH networks, which are defined by IEC 60728-113 and IEC 60728-13-1. Use of in-building optical networks is very effective for saving costs (installation and maintenance) and enabling future network upgrades, especially in huge apartment buildings.

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The present document specifies technical characteristics and methods of measurements for audio PMSE equipment operating with up to 250 mW output power on radio frequencies up to 3 GHz (see note 1). NOTE 1: For RF power levels above this, refer to ETSI EN 300 454-1 [i.3]. Audio Programme Making and Special Events (PMSE) equipment within the scope of the present document is used in wireless applications for audio transmission purposes including, but not limited to equipment such as wireless microphones, in-ear monitoring systems, conference systems, talkback systems, tour guide systems, Cognitive PMSE (C-PMSE), Wireless Multichannel Audio Systems (WMAS), and assistive listening devices.

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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.

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This part of IEC 63245 specifies requirements for spatial wireless power transfer based on
multiple magnetic resonances (SWPT-MMR), which is a non-radiative wireless power transfer
(WPT). This document contains two categories of requirements: general requirements and
functional requirements. The general requirements cover charging procedures and charging
zones. The functional requirements cover each component of a SWPT-MMR system, such as
transmitter coils.

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IEC TR 63344:2021(E) describes the conceptual model of vibro-tactile-based haptics in multimedia systems and equipment used in electrical appliances, computer interfaces, automobiles, amusements, and communication devices. This model describes possible standardization items.

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IEC 62106-10:2021(E) describes the Universal Encoder Communication Protocol – UECP. The UECP has as its primary objectives to satisfy the need for harmonized RDS encoder communication protocols and to facilitate the interworking of various RDS systems components, such as RDS servers, data bridges and encoders, regardless of the supplier. Furthermore, a harmonised network environment and encoder model is being maintained to facilitate the interchange of component parts of RDS network systems. These harmonized models and a universal layered protocol are specified, based on the ISO/OSI recommendation. The UECP encompasses all current RDS features including any new developments using the ODA protocol.

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IEC/TR 62678:2010(E) provides information on accessibility and usability terms, activities, completed and ongoing standards, technical reports, projects, and specifies user needs that may or may not apply to audio, video and multimedia systems and equipment. Comments about demographics and public policies are included. A checklist of accessibility and usability considerations is also included. Industry experts may or may not apply this information when they evaluate opportunities to integrate support for accessibility and usability in their work.

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IEC/PAS 62883:2014(E) specifies a framework for adaptive handling of explicit interaction among humans and AAL spaces. This is based on a differentiation between explicit and implicit interaction as a consequence of the paradigm shift from Human-Computer Interaction to Human-Environment Interaction, further explained in the definition of the latter term. As a framework, a main subject matter of the specification is the identification of relevant areas for further standardization, thereby also looking at the interrelationships among the identified areas. The PAS also provides a first extensible specification in some of those areas.

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IEC TR 62709:2014 comprises seventeen use cases for Ambient Assisted Living submitted to IEC between June 2012 and September 2013. The use cases are based on the identified requirements of elderly people and people with disabilities. The use case scenarios demonstrate both the usability barriers and functional requirements. In addition, the accessibility principles developed in ISO/IEC Guide 71 were applied. A further objective of this report is to highlight potential areas for standardisation in the AAL environment to ensure ease of operation and interoperability with a focus on specific aspects relating to audio, video and multimedia equipment.

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IEC TS 63102:2021(E) highlights recommended technical methods of grid code compliance assessment for grid connection of wind and PV power plants as the basic components of grid connection evaluation. The electrical behaviour of wind and PV power plants in this technical specification includes frequency and voltage range, reactive power capability, control performance including active power based control and reactive power based control, fault ride through capability and power quality.
Compliance assessment is the process of determining whether the electrical behaviour of wind and PV power plants meets specific technical requirements in grid codes or technical regulations. The assessment methods include compliance testing, compliance simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, testing results and validated simulation models, and continuous monitoring data. The scope of this technical specification only covers assessment methods from a technical aspect; processes related to certification are not included.
This technical specification is applicable to wind and PV power plants connected to the electrical power grid.

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IEC 60958-3:2021 is available as IEC 60958-3:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60958-3:2021 specifies the consumer application of the interface for the inter-connection of digital audio equipment defined in IEC 60958-1. IEC 60958-3:2021 cancels and replaces the third edition published in 2006, Amendment 1:2009 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) The relevant part of IEC 60958-5 is supported.

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IEC 60958-1:2021 is available as IEC 60958-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60958-1:2021 describes a serial, uni-directional, self-clocking interface for the interconnection of digital audio equipment for consumer and professional applications. It provides the basic structure of the interface. Separate documents define items specific to particular applications. The interface is primarily intended to carry monophonic or stereophonic programmes, encoded using linear PCM and with a resolution of up to 24 bits per sample. When used for other purposes, the interface is able to carry audio data coded other than as linear PCM coded audio samples. Provision is also made to allow the interface to carry data related to computer software, multimedia technologies, or signals coded using non linear PCM. The format specification for these applications is not part of this document. The interface is intended for operation at audio sampling frequencies of 32 kHz and above. Auxiliary information is transmitted along with the programme. IEC 60958-1:2021c ancels and replaces the third edition published in 2008, and Amendment 1:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) The relevant part of IEC 60958-5 is supported.

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IEC 62605:2021 specifies the interchange format for e-dictionaries among publishers, content creators and manufacturers.
This document does not address the following aspects:
• data formats for reading devices;
• elements necessary for final print reproduction only;
• rendering issues related to physical devices;
• security issues such as DRM for documents.
IEC 62605:2021 cancels and replaces the second edition published in 2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
The format described in Annex B was significantly enhanced in the following ways:
a) elements to enhance uses of data (e.g. web-related usage);
b) attribute for accessibility-related functions;
c) attributes for more detailed markup for data reusability.

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IEC 63087-1:2021 specifies requirements, and the associated methods of measurement, for the electroacoustic performance of personal listening systems.
This document specifies requirements for the provision of assistive listening in audio, video and multimedia systems and equipment. The requirements are of different kinds, because of the diversity of the hardware concerned. Existing IEC standards for methods of measurement are normatively referenced if they exist. Methods of measurement and performance requirements are specified in IEC 63087-2.
This document does not apply to hearing aids. Also excluded are devices entirely worn on or in the ear, which cannot be measured independently.

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The present document specifies technical characteristics and methods of measurements for audio frequency induction
loop drivers operating from 10 Hz to 9 kHz used in Audio Frequency Induction Loop System (AFILS) with an upper
limit of 45 Arms.
NOTE 1: The object of an AFILS is to transmit an audio signal to people with hearing difficulties. The receiver in
this case is normally a hearing aid or cochlear implant with a built in telecoil, both of which are covered
by ETSI EN 300 422-4 [i.11].
These radio equipment types are capable of operating in the frequency band within the 10 Hz to 9 kHz range:
• with (an) output connection(s);
• for audio frequency baseband transmission (un-modulated and without the use of a carrier).
The present document covers induction loop drivers with output connectors. Integral antenna systems are covered by
ETSI EN 300 422-4 [i.11].
NOTE 2: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.1] is given in annex A.

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IEC 61937-11:2021 is available as IEC 61937-11:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61937-11:2021 describes the method to convey non-linear PCM bitstreams encoded in accordance with the MPEG-4 AAC format and its extensions (spectral band replication, parametric stereo and MPEG surround), and non-linear PCM bitstreams encoded in accordance with the MPEG-D USAC format, framed in MPEG-4 LATM/LOAS. IEC 61937-11:2021 cancels and replaces the first edition published in 2010, and Amendment 1:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) MPEG-D USAC has been added.

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IEC 63296-1:2021 specifies the methods for measuring the battery duration at defined sound pressure levels for continuous music playback of battery-powered loudspeaker equipment. A primary battery or secondary battery can be used as a power source for the loudspeaker and its composite equipment. In the case of composite equipment, this method for the measurement of battery duration can be applied under the condition of powered loudspeaker playback only.

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IEC TR 63308:2021 discusses the market of virtual reality (VR) and the technical domains pertaining to a VR system. This document provides clarity on how existing standards can be used and highlights further requirements for standards within the scope of TC 100.

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This part of IEC 60268 applies to transducers converting an electrical input signal into a
mechanical or acoustical output signal. However, if the electrical input terminals and the surface
of the radiator are accessible, this document can also apply to passive and active sound
systems such as loudspeakers, headphones, TV-sets, multi-media devices, personal portable
audio devices, automotive sound systems and professional equipment. This document
describes only electrical and mechanical measurements that help assess the transfer behaviour
of the device under test (DUT). This includes operating the DUT in both the small- and largesignal
domains. The influence of the target application's acoustical boundary conditions (e.g.
car interior) can also be considered in the physical evaluation of the sound system. Perception
and cognitive evaluations of the reproduced sound and the impact of perceived sound quality
are outside the scope of this document.
NOTE This document does not apply to microphones and other sensors. Implementation of this document does not
require access to the sound pressures generated in the near or far fields of the radiator. Directivity and other
characteristics describing the electro-acoustical transfer properties are described in IEC 60268-21, which covers
acoustical measurements.The practical application of the measurements for research and development (R&D), endof-
line testing (QC) and evaluation in the final target application (TA) is discussed in Annex A.

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This part of IEC 60268 defines the STI model, test signals, measurement and prediction
methods.
The objective of this document is to provide a comprehensive manual for all types of users of
the STI model in the fields of audio, communications and acoustics.
This document does not provide STI criteria for certification of transmission channels (e.g.
criteria for a voice-alarm system), but some typical application values are provided in Annex G.
Every measurement method has limitations, and the reader is referred to clauses relating to
limitations such as speech privacy, echo and systems using digital voice compression
(vocoders).
This document does not cover the case of fluctuating noise on the STI, although some general
comments on dealing with this complex issue are provided in 7.13 and 8.9.3.

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This document specifies basic framework measurement methods for sound immission from sound
sources placed close to the ear. These measurements are carried out with a manikin, equipped
with ear simulators including microphones. The measured values are subsequently converted into
corresponding free-field or diffuse-field levels. The results are given as free-field related or diffusefield
related equivalent continuous A-weighted sound pressure levels. The technique is denoted the
manikin technique.
This document is applicable to exposure to sound from sources close to the ear, for example during
equipment tests or at the workplace to sound from earphones or hearing protectors with audio
communication facilities.
This document is applicable in the frequency range from 20 Hz to 10 kHz. For frequencies above 10 kHz,
ISO 11904-1 can be used.

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IEC 62106-9:2021 specifies the Radio Broadcast Data System (RBDS), which is an RDS-compatible variant used in countries of North America. RBDS was first standardized by the U.S. National Radio Systems Committee (NRSC) in 1993 and subsequently revised in 1998, 2004, 2005 and 2011 . With the publication of this edition of IEC 62106, the RDS and RBDS standards are now harmonized into a single document. The frequency range of operation (64,0 MHz to 108,0 MHz as indicated by the title of this document) varies according to regional regulatory authority. The U.S. range is 88 MHz to 108 MHz, as set by the U.S. Federal Communications Commission.

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This document specifies requirements for typical conference systems, the parts they are composed of, the auxiliary devices necessary for their use (such as microphones, headphones, and sound reinforcement equipment) and the environment in which they are used. These requirements ensure interoperability and optimum performance under conditions of normal operation.
It is applicable to both wired and wireless systems.
The environment and areas where events are held are described in Annex A.
This document facilitates the determination of the quality of conference systems, the comparison of different systems and the assessment of their proper use by listing their characteristics. This document contains the technical backbone of ISO 20108 and ISO 20109.

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IEC 61937-2:2021 is available as IEC 61937-2:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61937-2:2021 specifies the digital audio interface to convey non-linear PCM encoded audio bitstreams applying IEC 60958-1 and IEC 60958-3. This document specifies burst-info, which defines content information about the data contained in the burst-payload. IEC 61937-2:2021 cancels and replaces the second edition published in 2007, Amendment 1:2011 and Amendment 2:2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) new audio data-types of MPEG-D USAC, ACX, ACX HBR2, ACX HBR4 and ACX HBR8 have been added;
b) extended data-type field in Pe has been activated.

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IEC 63034:2020 specifies the characteristics of microspeakers as well as the relevant test methods on microspeakers using steady-state sinusoidal signals, sinusoidal chirp, multi-tone or noise. The main characteristics include, but are not limited to, impedance, displacement, amplitude frequency response, distortion, and power handling.

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IEC 63181-2:2020 specifies measuring methods for LCD multi-screen display terminals. To evaluate the characteristics of LCD multi-screen display terminals, the following measurement items are specified:
– gap (physical, optical): detailed splicing precision;
– splicing deviation: splicing accuracy of active areas of LCD splicing screen;
– installation deviation: the flatness of terminal surfaces in vertical and horizontal directions;
– luminance uniformity: luminance uniformity of adjacent LCD units;
– chromatic uniformity: chromatic uniformity of adjacent LCD units.

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IEC TR 63274:2021 introduces high dynamic range video technology, describes current television set power consumption measurement methods, discusses the HDR TV market, analyses HDR TV power measurement challenges, and considers a path forward for HDR TV power measurement standards development.

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IEC 61937-1:2021 is available as IEC 61937-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61937-1:2021 applies to the digital audio interface using the IEC 60958 series for the conveying of non-linear PCM encoded audio bitstreams.
It describes the way in which this digital interface can be used in consumer applications. The professional mode is not considered within the scope of this document.
IEC 61937-1:2021 cancels and replaces the second edition published in 2007, and amendment 1 published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Activation of Pe field;
b) Enhanced usage of channel status bits.
c) Addition of Annex B.

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IEC 62106-2:2021 is available as IEC 62106-2:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62106-8:2021 defines the coding and definition of features for the Radio Data System (RDS). IEC 62106-8:2021 cancels and replaces the first edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 62106‑2:2018:
a) Subclause 4.2.4 has been added;
b) Tables 1 and 13 have been modified;
c) The new function RDS2 file transfer has been added and it is detailed in Annex C; this uses a CRC-16, which is specified in Annex D.

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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.

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2020-10-13: BT D167/C020 to remove EMC and RED link and proceed with the project without link to legislation
2019-12-05: TC decision to carry on implementation as NON hEN - link EMC and RED removed
2019-12-03: NEXT ACTION: TC
2019:12-03: TC decided to set up AHG to look into aligning this AMD with EU regulatory requirements

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The present document specifies technical characteristics and methods of measurements for digital terrestrial television
broadcast receivers fitted with an external antenna input (tuner port) capable of receiving DVB-T and/or DVB-T2
signals.
Receivers without external antenna connectors, receivers with diversity, and receivers intended for mobile or
automotive reception are not covered by the present document.
NOTE: The relationship between the present document and essential requirements of article 3.2 of Directive
2014/53/EU [i.3] is given in annex A.
The present document includes considerations of interference from LTE transmissions in the 700 MHz and 800 MHz
bands and DTT transmissions in UHF band IV. The requirements of the installation system (antenna, feeder cable,
amplifiers, etc.) are not addressed.
There are country specific variations of frequency usage for digital terrestrial television reception and other users such
as mobile broadband.
The tests in the present document only apply if the DTT broadcast receiver supports the wanted signal configuration
used by the test in question. The applicable tests are summarized in annex E, table E.1.

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EN-IEC 60089 applies to analogue audio disk records and the corresponding professional anddomestic reproducing equipment. It excludes amplifiers and loudspeakers, methods ofmeasurement for which can be found in IEC 60268-3, IEC 60268-5, IEC 6026821andIEC 60268-221 .This document specifies the characteristics that are necessary to ensure compatibility betweenanalogue audio disk records and the corresponding reproducing equipment.It also lists and defines the most important characteristics affecting the performance ofreproducing equipment, and establishes agreed methods of measurement for thesecharacteristics

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IEC TR 63289:2020 describes the cases of the multimedia cyber technology, including IoT or CPS, within the scope of TC 100, and possible standardization items.

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IEC 60268-16:2020 defines the STI model, test signals, measurement and prediction methods.
The objective of this document is to provide a comprehensive manual for all types of users of the STI model in the fields of audio, communications and acoustics.
This document does not provide STI criteria for certification of transmission channels (e.g. criteria for a voice-alarm system), but some typical application values are provided in Annex G.
Every measurement method has limitations, and the reader is referred to clauses relating to limitations such as speech privacy, echo and systems using digital voice compression (vocoders).
This document does not cover the case of fluctuating noise on the STI, although some general comments on dealing with this complex issue are provided in 7.13 and 8.9.3.
IEC 60268-16:2020 cancels and replaces the fourth edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the spectrum of the male speech test signal has been changed, with significant reductions in the 125 Hz and 250 Hz bands being implemented;
b) some corrections to formulae have been made;
c) additional information has been included on prediction and measurement procedures;
d) spectrum and weighting factors for female speech have been removed;
e) verification information for STI measurement devices added;
f) the relationships between STI and number of other speech intelligibility measures have been updated in Annex E;
g) greater information is given in Annex M about adjustments to the measured STI results to simulate effects of alternative ambient noise and speech levels.

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IEC 60268-22:2020 applies to transducers converting an electrical input signal into a mechanical or acoustical output signal. However, if the electrical input terminals and the surface of the radiator are accessible, this document can also apply to passive and active sound systems such as loudspeakers, headphones, TV-sets, multi-media devices, personal portable audio devices, automotive sound systems and professional equipment. This document describes only electrical and mechanical measurements that help assess the transfer behaviour of the device under test (DUT). This includes operating the DUT in both the small- and large-signal domains. The influence of the target application's acoustical boundary conditions (e.g. car interior) can also be considered in the physical evaluation of the sound system. Perception and cognitive evaluations of the reproduced sound and the impact of perceived sound quality are outside the scope of this document.

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IEC 61966-12-1:2020 is available as IEC 61966-12-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61966-12-1:2020 defines the colour gamut metadata scheme for video systems and similar applications. The metadata can be associated with wide-gamut video colour content or to a piece of equipment to display the content. When associated with content, the colour gamut metadata defines the gamut for which the content was created. It can be used by the display for controlled colour reproduction even if the display’s colour gamut is different from that of the content. When associated with a display, the colour gamut metadata defines the display colour gamut. It can be used during content creation to enable improved colour reproduction. The colour gamut metadata can cover associated colour encoding information, which includes all information required for a controlled colour reproduction, when such information is not provided by the colour encoding specification. The colour gamut metadata scheme provides scalable solutions. For example, more flexible solutions will be used for the professional use, while much simpler solutions will be used for consumer use with easier product implementation. This part of IEC 61966 only defines the colour gamut metadata scheme. Vendor-specific solutions for creation and end-use of this metadata are allowed. IEC 61966-12-1:2020 cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) ITU-R BT.2020 colour spaces added in Clause 6;
b) ITU-R BT.2100 colour spaces added in Clause 6.

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