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AES Standards, new projects

[page updated 2017-11-16]

The following projects have been approved by subcommittees of the AESSC and assigned to Working Groups as shown. If you have an interest in helping to develop these standards projects, please go to the AES Standards Web site at www.aes.org/standards and click on "Standards Development" to learn more. If you have information on other standards, or standards projects, with similar scopes to these projects, please contact:

the AES Standards secretariat.

Updates and revisions to project details will be shown in the status of AESSC projects.

AES-X244, Loudness Guidelines for Over the Top Television and Online Video Distribution
Initiated on 2017-10-21 by Subcommittee SC-02, and assigned to Working Group
SC-02-12

Scope:
This AES document addresses OTT and OVD Loudness challenges by leveraging already established Over-the-Air Television practices, providing guidelines focused on the Loudness and Content Dynamic Range for connected set-top and mobile devices. When followed, these guidelines will:
• Provide consistent Loudness across different Programs, service providers and advertising Content
• Provide appropriate playback Loudness Range for different devices and listening conditions
• Prevent excessive Peak Limiting or other processing from degrading the audio quality
• Preserve the artistic intent of wide Dynamic Range content (movies, drama, live music)
• Improve the listening experience

AES-X243, AES70 Recommended Practice for AES67 Connection Management
Initiated on 2017-10-21 by Subcommittee SC-02, and assigned to Working Group
SC-02-12

Scope:
Publish an informative document that recommends the way to implement AES70-CM3 connection management for AES67 unicast and multicast connections.

AES-X242, Audio applications of networks – Streaming audio metadata over IP
Initiated on 2017-10-21 by Subcommittee SC-02, and assigned to Working Group
SC-02-12

Scope:
To define a standardized method for transporting metadata associated with audio in an AES67 stream. It is proposed that audio metadata should be transported in a separate stream that is sent in parallel to AES67 streams rather than part of the AES67 stream. The transmission method should be low latency and have a level of network performance equivalent to AES67. Within the scope is formatting of the streaming audio metadata for transport. Suggested is an open standards based framework that supports both static and dynamic, time synchronous metadata that is optimized for live workflow applications. The standard should consider all use cases for metadata associated with AES67, support existing AES audio metadata standards, and be extensible for future metadata requirements.

AES-X241, End of Line Testing for Production Loudspeaker Drivers
Initiated on 2017-03-19 by Subcommittee SC-04, and assigned to Working Group
SC-04-03

Scope:
To specify parameters and methods of measurement required for end-of-line quality control tests performed on loudspeaker drivers manufactured for automotive, consumer and professional applications. It includes requirements for mechanical setup. It does not consider measurements of loudspeaker systems or multi-driver arrangements.

AES-X238, Media network directory architecture
Initiated on 2016-03-15 by Subcommittee SC-02, and assigned to Working Group
SC-02-12

Scope:
To develop a statement of requirements for a directory service architecture, possibly including an automatic network discovery mechanism, suitable for professional media networks of all scales, from tabletop to intercontinental.

A directory service is the software system that stores, organizes and provides access to information in a directory. In a network, a directory service defines the namespace for the network. Discovery is a set of directory functions that automate directory updating.

Further steps to identify systems capable of meeting these requirements are expected subsequently.

AES-X230, Control data for microphones in AES70
Initiated on 2016-03-24 by Subcommittee SC-04, and assigned to Working Group
SC-04-04

Scope:
To specify control data sets in OCA (AES70) for wired and wireless microphones.

AES-X223, Loudspeaker driver comparison chambers
Initiated on 2014-09-23 by Subcommittee SC-04, and assigned to Working Group
SC-04-03

Scope:
To consider factors affecting the interchangeability of measurement data from simple loudspeaker comparison chambers.

AES-X214, XML Implementation of ADL
Initiated on 2014-01-29 by Subcommittee SC-07, and assigned to Working Group
SC-07-01

Scope:
to create a set of XML elements and a schema that fully represents AES31-3 ADL documents; and to provide an XSLT style sheet for reformatting the XML document in plain-text EDML format.

AES-X224, Metadata integrity in audio files
Initiated on 2013-11-04 by Subcommittee SC-07, and assigned to Working Group
SC-07-01

Scope:
to create a guide for manufacturers of audio hardware, software and computer platforms describing best practices for the management of metadata embedded in audio files.

AES-X222, New audio data connector
Initiated on 2013-10-28 by Subcommittee SC-05, and assigned to Working Group
SC-05-02

Scope:
To specify basic dimensions and application details for two- and four-contact circular connectors including a circumferential shield, used for balanced interconnections of sound system components for professional audio, commercial, recording, broadcast and similar applications, carrying either analog or digital signals.

AES-X219 Method of measurement for frequency and impulse response of sound systems in auditoria
Initiated on 2013-03-04 by Subcommittee SC-04, and assigned to Working Group
SC-04-08

Scope:
to specify a method of measurement for frequency and impulse response of sound systems in auditoria.

AES-X218 Measurement and calibration of sound systems in rooms
Initiated on 2013-03-04 by Subcommittee SC-04, and assigned to Working Group
SC-04-08

Scope:
to document relevant parameters affecting the audience experience of a sound system in a generalized room, and identify appropriate objective methods of measurements to quantify them. The intent is to identify tools and procedures for a technician to measure the performance of a loudspeaker system in a room, and then support accurate and reliable calibration of this system to a specified performance.

AES-X217, Audio Analog-to-Digital Converter Test Method and Performance Specification for Archiving and Preservation Applications
Initiated on 2013-08-20 by Subcommittee SC-02, and assigned to Working Group
SC-02-01

Scope:
To specify sets of measurement methods and performance criteria to characterize the performance of audio analog-to-digital converters (ADCs) used in archiving and preservation workflows. This standard considers the production of files using the highest-quality ADC devices.

AES-X216 Calibration Pink-Noise Standard
Initiated on 2013-03-04 by Subcommittee SC-04, and assigned to Working Group
SC-04-08

Scope:
This project will liaise with SMPTE TC-25CSS in their project to "Create a pink-noise Standard, and a reference pink-noise file available in a digital audio file and DCP formats that conform to the description of the pink noise in ST 202:2010 and RP 200-2012 and for which the time domain (mean, standard deviation, skew, kurtosis, etc) and frequency domain (energy per bandwidth, bandwidth, etc) characteristics are defined. Specify the algorithm used to generate the pink-noise file." The project will consider comments as appropriate for communication to SMPTE.

AES-X215 Current procedures to calibrate the cinema B-Chain
Initiated on 2013-03-04 by Subcommittee SC-04, and assigned to Working Group
SC-04-08

Scope:
This project will liaise with SMPTE TC-25CSS in their project to Codify current procedures as used by skilled theater technicians to calibrate the Cinema B-Chain. The project will consider comments as appropriate for communication to SMPTE.

AES-X213 MADI over Twisted-Pair Cable
Initiated on 2012-11-04 by Subcommittee SC-02, and assigned to Working Group
SC-02-02

Scope:
To add twisted pair connectivity to AES10 in addition to the current connectivity options.

AES-X193 Array and cluster polar radiation measurements
Initiated on 2010-05-20 by Subcommittee SC-04, and assigned to Working Group
SC-04-01

Scope:
The standard will specify how the angular measurements of polar radiation data for arrays or cluster arrangements of loudspeakers shall be made and documented. This acquired data is suitable for application in room acoustic, electro-acoustic, and sound system predictions, and loudspeaker data sheets.

AES-X170 Integrated Control, Monitoring and Connection Management for Digital Audio Networks
Initiated on 2010-04-29 by Subcommittee SC-02, and assigned to Working Group
SC-02-12

Scope:
to create and standardize:

  1. A set of structured Internet Protocol-based messages that can be used to control single parameters or groups of parameters, and to monitor these parameters. The parameters are associated either with typical signal processing functionality within audio devices, synchronization between such devices, or connections between such devices.
  2. A mechanism for grouping of device parameters, and messages required to implement such grouping.
  3. A mechanism for the control of latency within networks of audio devices, and a specification of the messages and parameters required for the control of such latency.
  4. Parameter modifiers, and the messages required to create and configure such modifiers.
  5. Security levels, and the messages required to set and get such levels.

AES-X155 Production recording metadata set (iXML)
Initiated on 2008-05-02 by Subcommittee SC-03, and assigned to Working Group
SC-03-06

Scope:
to specify an XML-based metadata set to communicate file-based and project-based metadata between various stages of audio workflow in production, telecine, editorial, and post production. Production may include recordings made in studios and on location.

AES - Audio Engineering Society