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Audio, IEC, and the AESAudio Engineering Society Standards
Bruce C. Olson, AESSC SCDr. Richard Cabot, AESSC SM
A bit of terminology AESSC
Audio Engineering Society Standards Committee AESSC SC
AESSC Standards Chair AESSC SM
AESSC Standards Manager AESSC Standards Secretary
Audio, IEC, and the AESSeptember 2017 2
Why AES standards?AES is the meeting place for Audio Professionals Professional Areas
Product Designers Product Manufacturers System Designers Content Providers Broadcast and Presentation Facilities
Audio, IEC, and the AESSeptember 2017 3
Why AES standards?Systems use products from multiple manufacturers Need to work predictably and reliably Define interoperability Business-enabling technology
AES standards are respected in the audio community
Audio, IEC, and the AESSeptember 2017 4
Why IEC standards? IEC, like ISO, publish International Standards
Have special status in the global economy Respected as legitimate by the WTO when cited in
international purchase agreements Local Standards may be seen as a “non-tariff
barrier” to trade and be challenged
Audio, IEC, and the AESSeptember 2017 5
Why IEC standards? IEC standards are respected by a wider range of
purchasers beyond the audio community IEC standards will be relevant for larger
contracts both locally and internationally
Where an AES standard is seen to be valuable within the audio industry, it makes sense to propose it for International Standardization to broaden its effectiveness
Audio, IEC, and the AESSeptember 2017 6
Why AES standards as well as IEC?
AES standards work is performed by volunteers, supported by their employers
IEC standards work is performed by individuals proposed by their National Committees (NC) Different countries have different rules and costs for
participation, and some countries do not have active NCs in audio
Audio, IEC, and the AESSeptember 2017 7
Why AES standards as well as IEC?
Individuals that produce and maintain an AES standard would not likely tolerate the duplication of process and costs needed for participation in their NC as well
AES standards should be maintained and revised within the AES, as that is where the expertise lies
The output of AES working groups should be offered to the IEC where appropriate
Audio, IEC, and the AESSeptember 2017 8
AES – IEC Collaboration AES Standards in the 1980s
Digital audio fundamentals• Sampling frequencies (AES5)
1984, 1997, 2003, 2008• 2-channel interface (AES3)
1985, 1992, 2003, 2009
Yoshiharu Abe – AESSC Vice Chair 1986-1992 Yoshizo Sohma – AESSC Vice Chair 1993-2005 Junichi Yoshio – AESSC Vice Chair 2006-Present
IEC TC100 Category D Relationship established in 1997 Yoshio-san and Endo-san joined AESSC
Audio, IEC, and the AESSeptember 2017 9
AES – IEC Collaboration AESSC provides meeting space and times as need by
the IEC during AES conventions IEC TC100 Secretary is AESSC Vice-Chair (JY) AESSC SM is TA 11 Technical Secretary (MY)
This will be changed following the IEC TC100 TA restructuring
IEC TC100 GMT Manager is AESSC Vice Chair (JW)
Audio, IEC, and the AESSeptember 2017 10
AES: List of TC/SCs LiaisonsTC100 DescriptionMT 60268-4 TA 20 (2018) Sound System Equipment - Part 4: MicrophonesMT 60268-5 TA 20 (2018) Sound system equipment Part 5 Loudspeakers
MT 60268-7 TA 20 (2018) Sound system equipment - Part 7: Headphones and earphones
MT 60268-16 TA 20 (2018) Sound system equipment - Part 16: Speech intelligibility
MT 61606-1&2 TA 20 (2018) Audio and audiovisual equipment - Digital audio part - Basic methods of measurement of audio characteristics
MT 61938 TA 20 (2018) Audio, video and audiovisual systems - Interconnections and matching values - Preferred matching values of analogue signals
TA 1/MT 62216 Digital terrestrial television receivers for the DVB-T system
TA 1/MT 62360 Baseline Specifications of Satellite and Terrestrial Receivers for ISDB
TA 1/MT 62455 Internet protocol (IP) and transport stream
TA 4/MT 60958-1 Digital audio interface - Part 1: General
TA 4/MT 60958-3 Digital audio interface - Part 3: Consumer applications
TA 4/MT 60958-4 Digital audio interface - Part 4: Professional applications
TA 4/MT 61883-1 Consumer Audio/Video equipment - Digital interface - General
TA 4/MT 61883-6 Consumer audio/video equipment - Digital interface - Part 6: Audio and music data transmission
Audio, IEC, and the AESSeptember 2017 11
AES: List of TC/SCs LiaisonsTC100 DescriptionTA 4/MT 61937 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958
TA 4/MT 61937-1 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958- Part 1: General
TA 4/MT 61937-2 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 2: Burst-info
TA 4/MT 61937-3 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 3: Non-linear PCM bitsreams according to the AC-3 format
TA 4/MT 61937-5 Interfaces for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theatre Systems) format(s)
TA 4/MT 61937-6 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying to IEC 60958 Part 6: Non-linear PCM bitstreams according to the MPEG2 AAC audio formats
TA 4/MT 61937-7 Digital audio ? Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 7: Non-linear PCM bitstreams according to the ATRAC and ATRAC2/3 formats
TA 4/MT 61937-8 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958-Part 8: Non-linear PCM bitstreams according to the Windows Media Audio Professional format
TA 4/MT 62365 Digital audio - Digital input-output interfacing - Transmission of digital audio over asynchronous transfer mode (ATM) networks
TA 4/PT 62379 Common Control Interface for networked digital audio and video products
Audio, IEC, and the AESSeptember 2017 12
AES: List of TC/SCs LiaisonsTC100 DescriptionTA 5/WG 1 Safety of cable networks
TA 5/WG 2 EMC
TA 5/WG 3 Coaxial equipment
TA 5/WG 4 Headend equipment
TA 6/MT 62592 Portable video encoding specification for interoperability
TA 6/VT 62261 Television Metadata Dictionary Database
TA 8/MT 62291 Multimedia data storage - Application program interface for UDF based file systems
TA 8/PT 62295 Common communication protocol for generic linkage on heterogeneous networks
TA 10/MT 62448 Multimedia systems and equipment - Multimedia e-publishing and e-books - Generic format for e-publishing
TA 11/PT 62312 Guideline for synchronization of audio and video (TC 100)
TA 11/PT 62557 Quality of multimedia information - Vocabulary
TA 12/MT 62087 Methods of measurement for the power consumption of audio, video and related equipment
TA 14/PT 62680 Universal Serial Bus interfaces for data and power
TA 14/PT 62700 DC Power Supply for Portable Personal Computer
Audio, IEC, and the AESSeptember 2017 13
AES – IEC DocumentsAESSC WG AESSC # IEC # Description
SC-02-08 AES31-2 IEC 62942 Broadcast Wave Format files
SC-02-02 AES3 IEC 62537 Loudspeakers with digital inputs
SC-04-03 AES2 IEC 60268-5, IEC 60268-21, IEC 60268-22 Loudspeakers
SC-04-04 n/a IEC 60268-4 Microphones
SC-04-04, SC-05-05 n/a IEC 61938 Matching values, phantom power
SC-02-02 AES3 IEC 60958-4 Digital interface
SC-02-01 AES17 IEC 61606-1, IEC 61606-3 Digital audio measurement
SC-02-02 AES47 IEC 62365 Audio over ATM networks
SC-02-12 AES58 IEC 61883-6 IEEE 1394 bus, Audio and music data
Audio, IEC, and the AESSeptember 2017 14
Current AES-IEC Projects AES31-2-2012 – IEC PT62942
Broadcast Wave File Proposed as IS to IEC TC100 in 2015 by AES CD comment period closes 2017-11-03 AESSC SC-02-08 will propose to update
AES31-2 in due course to harmonize with IEC 62942
Audio, IEC, and the AESSeptember 2017 15
Current AES-IEC Projects IEC 62537
Interface for loudspeakers based on IEC 60958-4
IEC TC100 TA4 Work-In-Progress
AES SC-02-02 Working Group providing input
Audio, IEC, and the AESSeptember 2017 16
Current AES-IEC Projects IEC 60268-21
Loudspeakers - Acoustical Measurements (Output-based)
IEC TC100 GMT Audio Work-In-Progress• IEC TC100 TA 20 (2018)
AES SC-04-03 Working Group providing input
Audio, IEC, and the AESSeptember 2017 17
Current AES-IEC Projects IEC 60268-22
Loudspeakers - Electrical and mechanical measurements
IEC TC100 GMT Audio Work-In-Progress• IEC TC100 TA 20 (2018)
AES SC-04-03 Working Group providing input
Audio, IEC, and the AESSeptember 2017 18
Ongoing AES-IEC Projects AES2-2012 – IEC 60268-5
Loudspeaker Specification AES SC-04-03
• Review in 2017 IEC TC100 GMT Audio
• Assign to TA 20?
Audio, IEC, and the AESSeptember 2017 19
Ongoing AES-IEC Projects AES3-2009-r2014 – IEC 60958-4
Digital audio interface AES SC-02-02
• Review in 2019 IEC TC100 TA 4
• Revised in 2016• Review in 2018
Audio, IEC, and the AESSeptember 2017 20
Ongoing AES-IEC Projects AES17-2015 – IEC 61606-1, -3
Digital audio measurement AES SC-02-01
• Review in 2020 IEC TC100 GMT
Audio, IEC, and the AESSeptember 2017 21
Ongoing AES-IEC Projects AES47-2006 – IEC 62365
Audio over ATM Networks AES SC-02-02
• Stabilized in 2017 IEC TC100 TA 4
Audio, IEC, and the AESSeptember 2017 22
Ongoing AES-IEC Projects AES58-2008-r2013 – IEC 61883-6
IEEE 1394 Application of generic data AES SC-02-02
• Review in 2018 IEC TC100 TA 4
Audio, IEC, and the AESSeptember 2017 23
Ongoing AES-IEC Projects IEC 60268-4
Microphone specification AES SC-04-04
• Working group provides input IEC TC100 GMT
• IEC TC100 TA 20 (2018)
Audio, IEC, and the AESSeptember 2017 24
Ongoing AES-IEC Projects IEC 61938
Matching values, phantom power AES SC-04-04, SC-05-05
• Working group provides input IEC TC100 GMT
• IEC TC100 TA 20 (2018)
Audio, IEC, and the AESSeptember 2017 25
AESSC Subcommittees SC-00
Subcommittee on Stabilized Documents SC-02
Subcommittee on Digital Audio SC-04
Subcommittee on Acoustics SC-05
Subcommittee on Interconnections SC-07
Subcommittee on Metadata
September 2017 26 Audio, IEC, and the AES
