Audio, IEC, and the AES. Audio Engineering Society Standards Bruce C. Olson, AESSC SC Dr. Richard Cabot, AESSC SM

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1 Audio Engineering Society Standards Bruce C. Olson, AESSC SC Dr. Richard Cabot, AESSC SM

2 AESSC A bit of terminology Audio Engineering Society Standards Committee AESSC SC AESSC Standards Chair AESSC SM AESSC Standards Manager AESSC Standards Secretary September

3 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 September

4 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 September

5 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 September

6 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 September

7 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 September

8 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 September

9 AES IEC Collaboration AES Standards in the 1980s Digital audio fundamentals Sampling frequencies (AES5) 1984, 1997, 2003, channel interface (AES3) 1985, 1992, 2003, 2009 Yoshiharu Abe AESSC Vice Chair Yoshizo Sohma AESSC Vice Chair Junichi Yoshio AESSC Vice Chair 2006-Present IEC TC100 Category D Relationship established in 1997 Yoshio-san and Endo-san joined AESSC September

10 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) September

11 AES: List of TC/SCs Liaisons TC100 Description MT TA 20 (2018) Sound System Equipment - Part 4: Microphones MT TA 20 (2018) Sound system equipment Part 5 Loudspeakers MT TA 20 (2018) Sound system equipment - Part 7: Headphones and earphones MT TA 20 (2018) Sound system equipment - Part 16: Speech intelligibility MT &2 TA 20 (2018) MT TA 20 (2018) TA 1/MT TA 1/MT TA 1/MT TA 4/MT TA 4/MT TA 4/MT TA 4/MT TA 4/MT Audio and audiovisual equipment - Digital audio part - Basic methods of measurement of audio characteristics Audio, video and audiovisual systems - Interconnections and matching values - Preferred matching values of analogue signals Digital terrestrial television receivers for the DVB-T system Baseline Specifications of Satellite and Terrestrial Receivers for ISDB Internet protocol (IP) and transport stream Digital audio interface - Part 1: General Digital audio interface - Part 3: Consumer applications Digital audio interface - Part 4: Professional applications Consumer Audio/Video equipment - Digital interface - General Consumer audio/video equipment - Digital interface - Part 6: Audio and music data transmission September

12 AES: List of TC/SCs Liaisons TC100 Description TA 4/MT Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC TA 4/MT Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC Part 1: General TA 4/MT Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC Part 2: Burst-info TA 4/MT Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC Part 3: Non-linear PCM bitsreams according to the AC-3 format TA 4/MT TA 4/MT TA 4/MT TA 4/MT TA 4/MT TA 4/PT Interfaces for non-linear PCM encoded audio bitstreams applying IEC Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theatre Systems) format(s) Digital audio - Interface for non-linear PCM encoded audio bitstreams applying to IEC Part 6: Non-linear PCM bitstreams according to the MPEG2 AAC audio formats Digital audio? Interface for non-linear PCM encoded audio bitstreams applying IEC Part 7: Non-linear PCM bitstreams according to the ATRAC and ATRAC2/3 formats Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC Part 8: Nonlinear PCM bitstreams according to the Windows Media Audio Professional format Digital audio - Digital input-output interfacing - Transmission of digital audio over asynchronous transfer mode (ATM) networks Common Control Interface for networked digital audio and video products September

13 AES: List of TC/SCs Liaisons TC100 Description TA 5/WG 1 TA 5/WG 2 TA 5/WG 3 TA 5/WG 4 TA 6/MT TA 6/VT TA 8/MT TA 8/PT TA 10/MT Safety of cable networks EMC Coaxial equipment Headend equipment Portable video encoding specification for interoperability Television Metadata Dictionary Database Multimedia data storage - Application program interface for UDF based file systems Common communication protocol for generic linkage on heterogeneous networks Multimedia systems and equipment - Multimedia e-publishing and e-books - Generic format for e- publishing TA 11/PT Guideline for synchronization of audio and video (TC 100) TA 11/PT TA 12/MT TA 14/PT TA 14/PT Quality of multimedia information - Vocabulary Methods of measurement for the power consumption of audio, video and related equipment Universal Serial Bus interfaces for data and power DC Power Supply for Portable Personal Computer September

14 AES IEC Documents AESSC WG AESSC # IEC # Description SC AES31-2 IEC Broadcast Wave Format files SC AES3 IEC Loudspeakers with digital inputs SC AES2 IEC , IEC , IEC Loudspeakers SC n/a IEC Microphones SC-04-04, SC n/a IEC Matching values, phantom power SC AES3 IEC Digital interface SC AES17 IEC , IEC Digital audio measurement SC AES47 IEC Audio over ATM networks SC AES58 IEC IEEE 1394 bus, Audio and music data September

15 Current AES-IEC Projects AES IEC PT62942 Broadcast Wave File Proposed as IS to IEC TC100 in 2015 by AES CD comment period closes AESSC SC will propose to update AES31-2 in due course to harmonize with IEC September

16 Current AES-IEC Projects IEC Interface for loudspeakers based on IEC IEC TC100 TA4 Work-In-Progress AES SC Working Group providing input September

17 Current AES-IEC Projects IEC Loudspeakers - Acoustical Measurements (Output-based) IEC TC100 GMT Audio Work-In-Progress IEC TC100 TA 20 (2018) AES SC Working Group providing input September

18 Current AES-IEC Projects IEC Loudspeakers - Electrical and mechanical measurements IEC TC100 GMT Audio Work-In-Progress IEC TC100 TA 20 (2018) AES SC Working Group providing input September

19 Ongoing AES-IEC Projects AES IEC Loudspeaker Specification AES SC Review in 2017 IEC TC100 GMT Audio Assign to TA 20? September

20 Ongoing AES-IEC Projects AES r2014 IEC Digital audio interface AES SC Review in 2019 IEC TC100 TA 4 Revised in 2016 Review in 2018 September

21 Ongoing AES-IEC Projects AES IEC , -3 Digital audio measurement AES SC Review in 2020 IEC TC100 GMT September

22 Ongoing AES-IEC Projects AES IEC Audio over ATM Networks AES SC Stabilized in 2017 IEC TC100 TA 4 September

23 Ongoing AES-IEC Projects AES r2013 IEC IEEE 1394 Application of generic data AES SC Review in 2018 IEC TC100 TA 4 September

24 Ongoing AES-IEC Projects IEC Microphone specification AES SC Working group provides input IEC TC100 GMT IEC TC100 TA 20 (2018) September

25 Ongoing AES-IEC Projects IEC Matching values, phantom power AES SC-04-04, SC Working group provides input IEC TC100 GMT IEC TC100 TA 20 (2018) September

26 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

27 Thank You Questions Comments

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