NOTE: These entries represent summary project status as reported by Working Group chairs and reviewed at the AESSC plenary during the AES 125th Convention in San Francisco, CA., US., 2008-10. Their confirmation requires the publication of the chairman's report from each Working Group meeting at that convention.

Reports will be posted to this web site as soon as available.

Project status may be updated to reflect current status at any time.

The following designated study or writing projects are currently active and assigned to working groups of the AES Standards Committee. Working groups and their chairs are listed at http://www.aes.org/standards/b_policies/aessc-structure.cfm.

The groups are open to participation by any individuals directly and materially affected by these projects or wishing to open other projects. Please click on "Participation" at http://www.aes.org/standards.

CONTENTS

• Introduction
• Status of published AES standards
• Status of AES information documents and reports
• Status of AES standards development projects

Introduction

Each of the following project descriptions contains a header with up to ten items:

1. the project designator and title;
2. the project scope;
3. the group to which the project is assigned;
4. the intent of the project, for example: standard, information document, report, liaison, or review of a document; the date the project was initiated; and the date anticipated for the completion of the intent;
5. the goal for the current step toward completion, for example, proposed working group draft (PWD); and the completion date for that goal;

Status of published AES Standards

Back to top

AES2-R: Review of AES2-1984 (r2003): AES Recommended Practice - Specification of loudspeaker components used in professional audio and sound reinforcement

Project scope: This Recommended Practice establishes a set of primary specifications to be followed by manufacturers in describing loudspeaker components used in professional audio and sound-reinforcement system design.
Assigned to: SC-04-03-A , Status: WG review complete. Final sec PWD for AES2-1 ASAP prior to PCFC.
Intent: Revision , Initiated: 2003 , Target: 2007
Current goal: PWD , Goal date: 2008-11

AES3-R: Review of AES3-2003: AES standard for digital audio engineering - Serial transmission format for two channel linearly represented digital audio data

Project scope: This document specifies a recommended interface for the serial digital transmission of two channels of periodically sampled and linearly represented digital audio data from one transmitter to one receiver.
Assigned to: SC-02-02 , Status: AES3 Am.6-2008 published 2008-11-12. Expected to be the last substantive contribution to AES3 in its traditional form.
Intent: Revision , Initiated: 2003 , Target: 2008
Current goal: CFC for draft amendment , Goal date: 2008-11-12

AES5-R: Review of AES5-2008: AES recommended practice for professional digital audio - Preferred sampling frequencies for applications employing pulse-code modulation

Project scope: This standard covers the use of certain preferred sampling frequencies in applications employing pulse-code modulation where there is a need for interchange of high-fidelity digital audio programs with a minimum of transcoding complexity. This standard is not concerned with sampling frequencies for narrow-band audio applications, such as voice-quality transmission links, or with processing devices in which both the input and the output signals are in an analog format, even if such signals are ultimately used for interchange of program.
Assigned to: SC-02-02 , Status: AES5-2008 published 2008-11-12
Intent: Revision , Initiated: 2003 , Target: 2008
Current goal: CFC , Goal date: 2008-11-12

AES6-R: Review of AES6-1982 (r2003): Method for measurement of weighted peak flutter of sound recording and reproducing equipment

Project scope: This standard specifies the "weighted peak" method of measuring flutter of sound recorders and reproducers for normal audio usage. For special purposes - high speed duplicators, different speeds in recording and reproducing, etc.- special procedures not described here should, if required, be used.
Assigned to: SC-03-01 , Status: CFC for draft revision of AES6-xxxx published, 2008-11
Intent: Revision , Initiated: 2003 , Target: 2008
Current goal: CFC , Goal date: 2009-02-13

AES7-R: Review of AES7-2000 (r2005): AES standard for the preservation and restoration of audio recording - Method of measuring recorded fluxivity of magnetic sound records at medium wavelengths

Project scope: This standard specifies a method of measuring the recorded flux per unit track width, called fluxivity, of a magnetically recorded sinusoidal test signal at medium wavelengths for all magnetic sound record formats, by using a high-efficiency magnetic reproducing head. It also specifies the equipment needed to implement this method.
Assigned to: SC-03-01 , Status: Propose to transfer this document to stabilized status; ballot after report posted
Intent: Stabilize , Initiated: 2005 , Target: 2010
Current goal: Stabilization , Goal date: 2008-12

AES10-R: Review of AES10-2003: AES Recommended Practice for Digital Audio Engineering - Serial Multichannel Audio Digital Interface (MADI)

Project scope: This standard describes the data organization and electrical characteristics for a multichannel audio digital interface (MADI). It includes a bit-level description, features in common with the two-channel format of the AES3, AES Recommended Practice for Digital Audio Engineering - Serial Transmission Format for Linearly Represented Digital Audio Data, and the data rates required for its utilization. The specification provides for the serial digital transmission over coaxial or fibre-optic lines of 28, 56, or 64 channels of linearly represented digital data at a common sampling frequency within the range of 32 kHz to 96 kHz having a resolution of up to 24 bits per channel. Only single-point to single-point interconnections from one transmitter to one receiver are supported.
Assigned to: SC-02-02 , Status: CFC for draft revised AES10-xxxx published, 2008-11-13
Intent: Revision, Initiated: 2003 , Target: 2008
Current goal: CFC , Goal date: 2009-02-13

AES11-R: Review of AES11-2003: AES Recommended Practice for Digital Audio Engineering - Synchronization of digital audio equipment in studio operations.

Project scope: This document provides a recommended practice for manufacturers and users of digital audio equipment aimed at promoting economical and efficient methods for synchronizing interconnected digital audio equipment. The provisions make use of the two-channel digital audio interface standard for professional use, AES3. It is expected that the recommendations will be adopted for synchronizing all other digital audio interfaces. The document addresses two groups of parameters. The first concerns the performance requirements for the successful interchange of digital audio data between equipment (5). The second concerns the performance requirements for the regeneration of clocks used for analog-to-digital and digital-to-analog, conversion (6).
Assigned to: SC-02-02 , Status: Sec PWD for draft revision posted to SC-02-02; aes11-sec-pwd-081031.pdf
Intent: Revision , Initiated: 2003 , Target: 2008
Current goal: PCFC , Goal date: 2008-11

AES14-R: Review of AES14-1992 (r2003): AES standard for professional audio equipment - Application of connectors, part 1, XLR-type polarity and gender

Project scope: This standard shall apply to three- and five-pin circular connectors, commonly and generically known as XLRtype, used for the interconnection of all categories of sound system components for professional audio, commercial, recording, broadcast, and similar applications, regardless of function, type, or level of the signal. It specifies the application and polarity of analog signals for these connectors. This standard does not pertain to the dimensions of the connectors.
Assigned to: SC-05-02 , Status: No action required. Add editorial reference to IEC 61076-2-103 at next printing
Intent: Review , Initiated: 2003 , Target: 2009
Current goal: Status report , Goal date: Continuing

AES17-R: Review of AES17-1998 (r2004): AES standard method for digital audio equipment - Measurement of digital audio equipment

Project scope: to provide methods for specifying and verifying the performance of digital audio equipment, and specifically to describe the testing of medium- and high-performance digital audio equipment.
Assigned to: SC-02-01 , Status: Revision ongoing to include (eg) multitone testing. T.Kite will post list of updates by end 2009-01
Intent: Revision , Initiated: 2004 , Target: 2009
Current goal: PTD , Goal date: 2009-01

AES22-R: Review of AES22-1997 (r2003): AES recommended practice for audio preservation and restoration - Storage of polyester-based magnetic tape

Project scope:
Assigned to: SC-03-04 , Status: Propose to reaffirm
Intent: Reaffirmation , Initiated: 2003 , Target: 2008
Current goal: CFC for reaffirmation of AES22 published 2008-11-03 , Goal date: 2009-02-04

AES26-R: Review of AES26-2001 (r.2007): AES recommended practice for professional audio - Conservation of the polarity of audio signals

Project scope: This standard provides a means to ensure that correct polarity is maintained throughout an audio production chain by determining the polarity of the signals at the various interface points between different items of equipment, in particular at the acoustical, electrical, mechanical, digital, and magnetic ports. The standard intends that each item of equipment comply separately with the polarity requirements for the input and output signals.
Assigned to: SC-05-02 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES27-R: Review of AES27-1996 (r2002): AES recommended practice for forensic purposes - Managing recorded audio materials intended for examination

Project scope:
Assigned to: SC-03-12 , Status: AES27-1996 (r2007) reaffirmed 2008-02-05. No action requested or required
Intent: Review , Initiated: 2007 , Target: 2012
Current goal: Status report , Goal date: continuing

AES28-R: Review of AES28-1997 (r2003): AES standard for audio preservation and restoration - Method for estimating life expectancy of compact discs (CD-ROM), based on effects of temperature and relative humidity

Project scope:
Assigned to: SC-03-04 , Status: CFC for reaffirmation of AES28-1997 (r2003) published 2008-10-27
Intent: Reaffirmation , Initiated: 2003 , Target: 2008
Current goal: CFC for reaffirmation , Goal date: 2009-01-28

AES31-1-R: Review of AES31-1-2001 (r2006): AES standard for network and file transfer of audio - Audio-file transfer and exchange - Part 1: Disk format

Project scope:
Assigned to: SC-02-08 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES31-2-R: Review of AES31-2-2006: Audio-file transfer and exchange - Part 2: File Format for Transferring Digital Audio Data Between Systems of Different Type and Manufacture

Project scope: This standard defines a file format for interchanging audio data between compliant equipment. It is primarily intended for audio applications in professional recording, production, post production, and archiving.
Assigned to: SC-02-08 , Status: CFC for AES31-2 Amendment 1 published, 2008-11-13 "Extended file format for audio to exceed 4 GByte"
Intent: Amendment , Initiated: 2006 , Target: 2011
Current goal: CFC amendment , Goal date: 2009-02-13

AES31-3-R: Review of AES31-3-2008, AES standard for network and file transfer of audio - Audio-file transfer and exchange - Part 3: Simple project interchange. including maintenance of annex F.

Project scope: This standard provides a convention for expressing edit data in text form in a manner that enables simple and accurate computer parsing while retaining human readability. It also describes a method for expressing time-code information in character notation. It supports common professional audio sampling frequencies, video frame rates, and film framing. This document addresses the core need of the AES31 series of standards in providing a simple but extensible system for passing audio material between systems.
Assigned to: SC-02-08 , Status: AES31-3-2008 published 2008-05-08. No action requested or required
Intent: Review , Initiated: 2008 , Target: 2013
Current goal: Status Report , Goal date: continuing

AES35-R: Review of AES35-2000 (r2005): AES standard for audio preservation and restoration - Method for estimating life expectancy of magneto-optical (M-O) discs, based on effects of temperature and relative humidity.

Project scope: This standard specifies test methods for estimating the storage life expectancy (LE) of information stored on rewritable and write once magneto-optical media. Only the effects of temperature and relative humidity (RH) are considered.
Assigned to: SC-03-04 , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: Continuing

AES38-R: Review of AES38-2000 (r2005): AES standard for audio preservation and restoration - Life expectancy of information stored in recordable compact disc systems - Method for estimating, based on effects of temperature and relative humidity.

Project scope:
Assigned to: SC-03-04 , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: continuing

AES41-R : Review of AES41-2000 (r2005): AES standard for digital audio - Recoding data set for audio bit-rate reduction

Project scope: This document describes a format for the data to be transmitted to identify a number of popular audio bit-rate reduction techniques. Provision is also made for the transmission of additional ancillary information. This document also describes a mechanism whereby the data derived from the coded signal can be transported with the decoded signal so that the data may be recovered and used to aid a subsequent re-encoding process.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: Continuing

AES42-R: Review of AES42-2006: AES Standards for Acoustics - Digital interface for microphones

Project scope: This standard describes an extension of the existing digital audio interface AES3 to provide a digital interface formicrophones.
Assigned to: SC-04-04 , Status: PTD posted 2008-08-10
Intent: Revision , Initiated: 2006 , Target: 2011
Current goal: PWD , Goal date: 2008-12

AES43-R: Review of AES43-2000: AES standard for forensic audio - Criteria for the authentication of analog audio tape recordings

Project scope: This standard specifies the minimum procedure for the authentication of analog audio tape recordings intended to be offered as evidence or otherwise utilized in civil, criminal, or other fact-finding proceedings. It does not specify or restrict additional testing procedures that can be used.
Assigned to: SC-03-12-C , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: Continuing

AES45-R: Review of AES45-2001 (r.2006): AES standard for single programme connectors - Connectors for loudspeaker-level patch panels

Project scope: This AES standard complements IEC 60268-12 including amendments 1 and 2, extending the standardization of application of AES45-series connectors to their use for loudspeaker-level patch panels.
Assigned to: SC-05-02 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES47-R: Review of AES47-2006: AES standard for digital audio - Digital input-output interfacing - Transmission of digital audio over asynchronous transfer mode (ATM) networks

Project scope: to set a standard practice for mapping multiple channels of audio in linear PCM or AES3 format into an ATM transport system, for the purposes of interconnecting large numbers of sources and destinations, with best performance for latency, jitter and other relevant factors.
Assigned to: SC-02-02 , Status: CFC for AES47 Am.1 published, 2008-11-13
Intent: Amendment , Initiated: 2006 , Target: 2011
Current goal: CFC , Goal date: 2009-02-13

AES48-R: Review of AES48-2005, AES standard on interconnections - Grounding and EMC practices - Shields of connectors in audio equipment containing active circuitry

Project scope: This standard specifies requirements for the connections of the designated shield contact of connectors built into audio equipment using active circuitry. These requirements are necessary for the preservation of electromagnetic compatibility (EMC) at both audio and radio frequencies.
Assigned to: SC-05-05 , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: Continuing

AES49-R: Review of AES49-2005 Magnetic Tape - Care and handling practices for extended usage

Project scope: This standard concerns the care and handling of magnetic recording tape during use. It addresses the issues of physical integrity of the medium necessary to preserve access to the audio or other data (information) recorded on the tape. This standard recommends handling procedures to maximize the effective life of magnetic tape.
Assigned to: SC-03-04 , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: Continuing

AES50-R: Review of AES50-2005, High Resolution Multichannel Audio Interconnection (HRMAI)

Project scope: To specify a bi-directional, point-to-point connection for up to 48 channels of digital audio in a variety of formats. The link uses a single Category 5 (or better) structured-wiring data cable, and is designed for use in a studio environment. The system uses the 100Base-TX physical layer of Fast Ethernet (IEEE 802.3) to transfer framed audio data. Audio synchronisation is maintained by transmitting an audio clock signal in parallel with the audio data utilising available signal pairs on the cable.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2005-07 , Target: 2010
Current goal: Status report , Goal date: continuing

AES51-R: Review of AES51-2006: AES standard for digital audio - Digital input-output interfacing - Transmission of ATM cells over Ethernet physical layer

Project scope: Specifies an encapsulation of ATM cells in Ethernet packets, so that ATM equipment may be connected using hardware specified for Ethernet networks.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2006-06-16 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES52-R: Review of AES52-2006, AES standard for digital audio engineering - Insertion of unique identifiers into the AES3 transport stream

Project scope: This standard specifies the method for inserting unique identifiers into the user data area of an AES3 stream. This specifically covers the use of UUID as well as a basic or extended SMPTE UMID.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES53-R: Review of AES53-2006, AES Standard for digital audio - Digital input-output interfacing - Sample-accurate timing in AES47

Project scope: This standard specifies how the timing markers specified in 4.1.4.1.1 and 4.5 of AES47 may be used to associate an absolute timestamp with individual audio samples. It does not specify how the recipient of a call is informed whether the timing markers will conform to this standard or merely meet the minimum specifications laid down in AES47.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status Report , Goal date: Continuing

AES55-R: Review of AES55-2007; Carriage of PCM with MPEG Surround data over AES3

Project scope: To specify transport of an MPEG-D bitstream over an AES3 compliant transport. The transport method shall be compatible with an IEC 60958 compliant transport. The standard will not discuss compression algorithms associated with MPEG-D.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2007 , Target: 2012
Current goal: Status report , Goal date: continuing

AES58-R: Review of AES58-2008; AES standard for digital audio - Audio applications of networks - Application of IEC 61883-6 32-bit generic data

Project scope: The audio and music data transmission protocol (A/M protocol) specified in IEC 61883-6 defines several data types and the packetization formats for them, including, "32-bit Generic Data". The content format of 32-bit Generic Data and description of the format are described in this document, together with an associated content identifier. The means of selecting the content format of 32-bit Generic Data for transmitters or receivers is outside the scope of this specification. Any control protocols can be used for selecting the content format of 32-bit Generic Data if the control protocol is extended to handle this 32-bit Generic Data.

The 32-bit Generic Data format discussed in this document is different from the "AM824 Generic Format" and the "Generic Ancillary Data", also defined in IEC 61883-6.
Assigned to: SC-02-12 , Status: No action requested or required
Intent: Review , Initiated: 2008 , Target: 2013
Current goal: Status report , Goal date: continuing

Status of published AES information documents and reports

Back to top

AES-11id-R: Review of AES-11id-2006, AES Information document for Preservation of audio recordings - Extended term storage environment for multiple media archives

Project scope: This information document provides suggested guidelines for four extended-term storage environments for archives that contain a variety of recording media, based on the corresponding ISO storage standards for those media. Whenever possible, the storage environments in the ISO storage standards should be followed. This technical report does not replace these ISO storage standards. In addition to environment recommendations, those standards also include other vital information pertinent for the long-term keeping of recording materials such as inspection, housing, and handling guidelines.
Assigned to: SC-03-04 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES-12id-R: Review of AES-12id-2006: AES information document for digital audio measurements - Jitter performance specifications

Project scope: This information document reviews various ways of characterizing and quantifying jitter, and refines several of them for audio purposes. It also attempts to present a common, unambiguous terminology. Its focus includes wideband jitter, baseband jitter, jitter spectra, period jitter, long-term jitter and jitter signatures. Comments are made on jitter transfer through phase-locked loops and on the jitter susceptibility of audio converters.
Assigned to: SC-02-01 , Status: Sec to add editorial pointers to AES3 and AES-2id for interface jitter.
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: new printing , Goal date: 2008-12

AES-1id-R: Review of AES-1id-1991 (r2003): Plane-Wave Tubes: Design and Practice

Project scope: to establish, expand, and improve the practice for the design and use of plane-wave tube measurement techniques, as recommended in section 2.2.1 of AES2-1984, "Recommended Practice Specification of Loudspeaker Components Used in Professional Audio and Sound Reinforcement."
Assigned to: SC-04-03 , Status: Graph expected from M Buck, Revised PWD asap. Completion November
Intent: Revision , Initiated: 2003 , Target: 2008
Current goal: PWD , Goal date: 2008-11

AES-2id-R: Review of AES-2id-2006: AES information document for digital audio engineering - Guidelines for the use of the AES3 interface

Project scope: to present information intended to assist a user to understand and use the AES3 digital audio interface. The document covers four basic topics: general, operational, electrical, and troubleshooting.
Assigned to: SC-02-02 , Status: Initial work is in progress, but an output draft is waiting for completion of AES3-X
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: continuing

AES-3id-R: Review of AES-3id-2001 (r2006): AES information document for digital audio engineering - Transmission of AES3 formatted data by unbalanced coaxial cable

Project scope: Where transmission of AES3 formatted signals over long distances (up to 1000 m) is required, or in a video installation using analog video distribution equipment, the electrical scheme described in this document, based on an unbalanced coaxial cable line, may be suitable. The document also provides some information regarding cables, cable equalizers, and receiver circuits, including adapters to or from standard AES3 equipment and cabling.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: continuing

AES-5id-R: Review of AES-5id-1997 (r2003): AES information document for Room acoustics and sound-reinforcement systems - Loudspeaker modeling and measurement - Frequency and angular resolution for measuring, presenting and predicting loudspeaker polar data

Project scope: This document provides guidelines for measuring, presenting, and predicting polar data from a single acoustic source or from an array of acoustic sources. It describes and quantifies possible errors, defined as differences in numeric values, associated with measurement resolution, presentation resolution, prediction techniques and measurement environments.
Assigned to: SC-04-03 , Status: Propose to withdrawn on publication of AES56
Intent: Withdraw , Initiated: 2003-03 , Target: 2008
Current goal: Status report , Goal date: 2008-12

AES-6id-R: Review of AES-6id-2006: AES information document for digital audio - Personal computer audio quality measurements

Project scope: to specify measurements of audio quality in a personal computer (PC) environment.
Assigned to: SC-02-01 , Status: No action requested or required
Intent: Review , Initiated: 2006 , Target: 2011
Current goal: Status report , Goal date: Continuing

AES-10id-R: Review of AES-10id-2005: AES information document for digital audio engineering - Engineering guidelines for the multichannel audio digital interface (MADI) AES10

Project scope: to provide guidance for areas of application of the MADI standard (AES10) that might be unclear. The information presented in these guidelines is not part of the AES10 standard. It is intended to assist a user to understand and use the MADI interface. The AESSC hopes these guidelines will further the design of mutually compatible interfaces and encourage consistent operational practices.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2005 , Target: 2010
Current goal: Status report , Goal date: Continuing

AES-R2: Review of AES-R2-2004, AES project report for articles on professional audio and for equipment specifications - Notations for expressing levels

Project scope:
Assigned to: SC-03-01 , Status: No action required
Intent: Review , Initiated: 2004 , Target: n/a
Current goal: Status report , Goal date: Continuing

AES-R4: Review of AES-R4 2007: Guidelines for AES standard for digital audio - Digital input-output interfacing - Transmission of digital audio over asynchronous transfer mode (ATM) networks, AES47

Project scope: to review the informative report intended to to accompany AES47, transmission of digital audio over asynchronous transfer mode (ATM) networks.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Review , Initiated: 2007 , Target: 2012
Current goal: Status report , Goal date: continuing

AES-R6: Guidelines for AES50 (HRMAI)

Project scope: Guidelines for AES50, High-resolution multi-channel audio interconnection (HRMAI)
Assigned to: SC-02-02 , Status: Propose to change title for clarity to, "Guidelines for AES50 (HRMAI)" at next reprinting
Intent: Review , Initiated: 2005-07 , Target: 2010
Current goal: Status report , Goal date: continuing

AES-R8: AES standards project report - Synchronisation of digital audio over wide areas

Project scope: This document is intended to provide guidance on synchronisation issues to implementers of systems in which an audio signal originated in digital form in one location is transmitted over a digital network to another location.
Assigned to: SC-02-02 , Status: No action requested or required
Intent: Report , Initiated: 2007 , Target: 2012
Current goal: Status report , Goal date: continuing

AES-R9: AES standards project report - Considerations for standardising AES metadata sets

Project scope: This document discusses primary issues and outlines some elementary considerations concerned with the standardisation of multiple metadata sets for audio and their relationship with externally-standardised sets.
Assigned to: SC-03-07 , Status: No action requested or required
Intent: Review , Initiated: 2007 , Target: 2012
Current goal: Status report , Goal date: continuing

AES-R10: AES standards project report - Use cases for networks in professional audio

Project scope: to identify and clarify use cases for networks in professional audio applications for Recording , Live sound, and Installations
Assigned to: SC-02-12 , Status: Publication of AES-R10 proposed to SC-02. Was AES-X156
Intent: Review , Initiated: 2008-08-25 , Target: 2013
Current goal: Status report , Goal date: continuing

AES standards development projects

Back to top

AES3-X: Restructure of AES3-2003: AES standard for digital audio engineering - Serial transmission format for two channel linearly represented digital audio data

Project scope: This document specifies, in layered multi-part form, a recommended interface for the serial digital transmission of two channels of periodically sampled and linearly represented digital audio data from one transmitter to one receiver.
Assigned to: SC-02-02 , Status: Incorporate recent email amendments. Sec to post updated PWDs before the end of October; then PCFC
Intent: Standard , Initiated: 2007 , Target: 2008
Current goal: PWD , Goal date: 2008-10

AES-X011: Fiber-Optic Audio Connections: Connectors and Cables Being Used and Considered for Audio

Project scope:
Assigned to: SC-05-02 , Status: Propose to assign this project to parent working group. New text expected from M. Natter
Intent: Standard , Initiated: 1991 , Target: 2008
Current goal: PWD , Goal date: 2008-10

AES-X064: Calibration material, 78 rpm coarse-groove discs

Project scope: Production of a limited series of a test record set including a re-edition of the IEC PUB 98 coarse-groove 78-RPM test frequency record and a lateral-cut geometrical and level test calibration record, with adequate technical and historical documentation and instructions for use in calibrating a playback system.
Assigned to: SC-03-02 , Status: No action requested or required
Intent: Information document , Initiated: 2007 , Target: 2012
Current goal: Status report , Goal date: 2008-06

AES-X071: Liaison with SMPTE Registration Authority

Project scope: to formalize a working relationship with the SMPTE Registration Authority
Assigned to: SC-03-07 , Status: Develop process for building AES metadata into Class 13 elements;
Intent: Liaison , Initiated: 1997 , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X074: Recommended Practices for Internet Audio Quality Descriptions (IAQUAD)

Project scope: Prepare AES documents to provide descriptor guidelines to rate the audio quality of Internet transmissions. The guidelines for Internet Audio Quality Descriptions (IAQUAD) will be based on specific criteria that can be efficiently measured by audio manufacturers. These criteria should also yield consistency across multiple tests for any given system. The focus of the project is on rating the audio compression aspect of Internet audio systems. Tests related to packet loss and other Internet anomalies are not included. An ongoing component of this project may maintain, within the rules of AESSC, an information clearinghouse for issues related to Internet audio quality. This information resource can include, without endorsement, the results of test conducted according to these guidelines.
Assigned to: SC-02-14 , Status: Progressing to PCFC
Intent: Standard , Initiated: 1997 , Target: 2005
Current goal: PCFC , Goal date: 2007-12

AES-X075: Liaison with IEC TC100 for IEC 61883

Project scope: Prepare recommendations and assist the work of IEC TC100 regarding the development and maintenance of relevant parts of IEC 61883. Any assigned task group shall report project progress to SC-02-12 and shall ask SC-02-12 for its advice on content. Administrative review of the project shall follow AESSC rules.
Assigned to: SC-02-12 , Status: Continuing
Intent: Liaison , Initiated: 1998 , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X080: Liaison with AES/ i3a-WG5 Joint Technical Committee (JTC)

Project scope: to formalize the working relationship between AESSC SC-03 and International Imaging Industry Association (i3a) WG5
Assigned to: SC-03-04 , Status: No action requested or required
Intent: Liaison , Initiated: 1998 , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X081: Liaison with International Organization for Standardization (ISO) SC 43-2 WG25

Project scope: to formalize the working relationship between AESSC SC-04-02 and ISO SC 43-2 WG25
Assigned to: SC-04-01 , Status: Keep in group to complement further work on scattering
Intent: Liaison , Initiated: 1999-04 , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X083 : Loudspeaker Polar Radiation Measurements

Project scope: to specify unified loudspeaker far-field polar radiation measurement practice to provide data suitable for room acoustic modeling programs
Assigned to: SC-04-01 , Status: CFC for AES56-xxxx published 2008-09-11
Intent: Standard , Initiated: 1999-09 , Target: 2008
Current goal: PCFC , Goal date: 2008-06

AES-X085: Detailed Professional Microphone Specifications

Project scope: to develop consensus among manufacturers and users for format and content of microphone specifications more detailed than those in IEC 60268-4, as a supplement to the specifications issued to that standard.
Assigned to: SC-04-04-E , Status: Considering graphical format for output
Intent: Standard , Initiated: 1998 , Target: 2009
Current goal: Status report , Goal date: 2008-10

AES-X093: Recommendations for Revisions of IEC 61938 Clause 7, Phantom power

Project scope: Review and submit recommendations for revision of microphone interface provisions of IEC61938, clause 7.
Assigned to: SC-04-04 , Status: Propose comments to IEC 61938 2008-10. Microphones to aim at 7 mA, mixers to specify total phantom current in mA
Intent: Report , Initiated: 1999 , Target: 2008
Current goal: PWD , Goal date: 2008-10

AES-X098A: Descriptive metadata for audio objects - Core audio schema

Project scope: To collect information on all metadata issues pertaining to digital audio objects and all aspects of the digital documentation of digital audio objects. This scope includes field structures to describe and provide access to the audio content contained in digital files. It includes transfer, preservation and restoration information.
Assigned to: SC-03-07 , Status: Hold discussion with EBU re core audio metadata in T3293-2008, x134
Intent: Information Document , Initiated: 1999-12 , Target: 2008
Current goal: PWD , Goal date: 2008-10

AES-X098B: Audio object structures for preservation and restoration

Project scope: To collect information on all metadata issues pertaining to digital audio objects and all aspects of the digital documentation of digital audio objects. This scope includes field structures to describe and provide access to the audio content contained in digital files. It includes transfer, preservation and restoration information.
Assigned to: SC-03-06 , Status: Sec revised draft as soon as possible
Intent: Standard , Initiated: 1999-12 , Target: 2008
Current goal: PWD , Goal date: 2008-11

AES-X098C: Administrative metadata for audio objects - Process history schema

Project scope: To collect information on all metadata issues pertaining to digital audio objects and all aspects of the digital documentation of digital audio objects. This scope includes field structures to describe and provide access to the audio content contained in digital files. It includes transfer, preservation and restoration information.
Assigned to: SC-03-06 , Status: Sec revised draft ASAP
Intent: Standard , Initiated: 1999-12 , Target: 2008
Current goal: PWD , Goal date: 2008-11

AES-X101: Data Type, Properties, and Method Definitions for Audio Device Application Program Interfaces (API)

Project scope: Define and publish recommended data types, properties, and methods for use in the control of common audio devices.
Assigned to: SC-02-12 , Status: SC-02-12-G will consider application of x101 to x170
Intent: Report , Initiated: 1999-12 , Target: 2006
Current goal: PWD , Goal date: 2009-01

AES-X102: Liaison with IEC TC100 PT 61606

Project scope: to harmonize digital audio measurement standards through a working relationship between SC-02-01 and IEC TC 100 MT61606 in conjunction with the category-D liaison between AESSC and IEC TC 100.
Assigned to: SC-02-01 , Status: IEC 61606-3 Ed.1 has passed FDIS without adverse comments and will be published soon
Intent: Standard , Initiated: 1998 , Target: Continuing
Current goal: Status report , Goal date: 2008-09

AES-X105 : Modified XLR-3 Connector for Digital Audio

Project scope: completion of specifications on connector researched by SC-04-04 for project AES-X42, with fully dimensioned drawings, and contributions to maintenance of IEC61076-2-103.
Assigned to: SC-05-02 , Status: Collecting final comments prior to final PWD
Intent: Standard , Initiated: 2000-02 , Target: 2008
Current goal: PWD , Goal date: 2008-12

AES-X106: Stylus shape and size for transfer of records

Project scope: to identify the mechanical part of the interface between a mechanical record and an electrical signal representative of the intended information stored by the mechanical record. The standard will propose a set of guidelines to ensure optimal retrieval of the recorded information in various groove systems used in mechanical recording.
Assigned to: SC-03-02 , Status: Edited draft in meeting. Sec to complete then post to WG
Intent: Information Document , Initiated: 2000-02 , Target: 2008
Current goal: PWD , Goal date: 2008-12

AES-X113: Universal female phone jack

Project scope: to specify a jack socket designed to accept plugs of the two commonest 6.35 mm 3-contact kinds (IEC60603-11 and B-gauge) as described in AES-R3.
Assigned to: SC-05-02 , Status: Prepare current draft for PCFC
Intent: Information document , Initiated: 2000-09 , Target: 2008
Current goal: PCFC , Goal date: 2008-11

AES-X114: Metadata review

Project scope: to study and report on the methods and techniques for attaching and implementing metadata through all aspects of interfacing real-time and file-transfer audio, including, where related to audio, other metadata related to other media. The scope includes metadata for professional recording, sound reinforcement, production, broadcasting, and transmission as well as the exchange of metadata and associated audio among different organizations. It also includes the development of techniques, such as UML, to aid the description of the relationships and flow of metadata requirements in an open and recognised way.
Assigned to: SC-03-07 , Status: Expecting input docs from Adobe re extensible metadata exchange
Intent: Review , Initiated: 2001-01 , Target: 2008
Current goal: Status report , Goal date: continuing

AES-X118 : Liaison with ITU-R study group 6C

Project scope: Liaison with ITU-R Working Party 6C, Special Rapporteur Group 3 (6C/SG3)
Assigned to: SC-02-01 , Status: Closer liaison to be sought
Intent: Liaison , Initiated: 2001-03 , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X123 : XL Connectors to Improve Electromagnetic Compatibility

Project scope: to specify new connectors with improved termination of shields at radio frequencies, improved connections of their shells with mating connectors, and low-pass filtering to minimize the transmission of radio frequency signals.
Assigned to: SC-05-02 , Status: R Rayburn to provide foreword & abstract. Final PWD ASAP
Intent: Standard , Initiated: 2001-05 , Target: 2008
Current goal: PWD , Goal date: 2008-10

AES-X125: Input filtering for electromagnetic compatibility

Project scope: To describe and explain the techniques that have been found to be practicable and effective for RF filtering.
Assigned to: SC-05-05 , Status: Olson will provide suitable figure for definitions
Intent: Information document , Initiated: 2001-05 , Target: 2008
Current goal: PTD , Goal date: 2008-10

AES-X129 : Loudspeaker Distortion Perception and Measurement

Project scope: to research the correlation of loudspeaker distortion perception with old and new distortion measures.
Assigned to: SC-04-03-D , Status: Continuing work in task group
Intent: Information document , Initiated: 2001-05 , Target: 2008
Current goal: Status report , Goal date: 2009-05

AES-X130: Data Connector in a XL Connector Shell

Project scope: to specify a ruggedized data connector compatible with 8-pole modular connectors (RJ45)
Assigned to: SC-05-02 , Status: Secretariat-formatted draft due
Intent: Standard , Initiated: 2005-05-10 , Target: 2008
Current goal: PWD , Goal date: 2008-12

AES-X132: Synchronisation of audio over IEEE 1394

Project scope: to specify methods of audio clocking and sampling-frequency synchronisation in a professional audio network based on the IEEE 1394 high performance serial bus. Include techniques to ensure devices function correctly in a network which includes IEEE 1394.1 compliant bridges
Assigned to: SC-02-12 , Status: Awaiting Sec-formatted PWD
Intent: Standard , Initiated: 2005-10 , Target: 2008
Current goal: Sec-formatted PWD , Goal date: 2008-10

AES-X134: Core metadata for audio exchange

Project scope: "To study and produce a standardised set of XML tags, along with their definitions, that describes the core set of metadata to accompany professional audio when being transferred by file or streamed formats."
Assigned to: SC-03-07 , Status: Proposed to harmonize AES-X098A draft with EBU P/MAG T3293 document
Intent: Report , Initiated: 2002-09-23 , Target: 2008
Current goal: PTD , Goal date: 2008-10

AES-X135: Forensic audio - Recordist Audio Evidence Collection

Project scope:
Assigned to: SC-03-12 , Status: Editing in the meeting, sec to complete
Intent: Information document , Initiated: 2002-10 , Target: 2008
Current goal: PWD , Goal date: 2009-01

AES-X137: Liaison with 1394 Trade Association (1394 TA)

Project scope: Liaison with 1394 Trade Association (1394 TA)
Assigned to: SC-02-12 , Status: M. Lave reported
Intent: Liaison , Initiated: tba , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X139: Liaison with EBU P/AGA

Project scope:
Assigned to: SC-02-02 , Status: Continuing
Intent: Liaison , Initiated: 2002-03 , Target: Continuing
Current goal: Status report , Goal date: Continuing

AES-X145: Care and Handling of Optical Discs

Project scope: This standard concerns the care and handling of digital optical discs during use. It addresses the issues of physical integrity of the medium necessary to preserve access to the recorded data (information). Included are recommendations for handling procedures to maximize the effective life of optical discs.
Assigned to: SC-03-04 , Status: Sec format JTC draft of 2007-08-07 as PWD
Intent: Standard , Initiated: 2004-09-09 , Target: 2007
Current goal: PWD , Goal date: 2008-07

AES-X147A: Connection of cable shields within connectors attached to portable balanced audio cables

Project scope: To develop a standard to specify arrangements for the connections of cable shields within connectors attached to balanced audio cables
Assigned to: SC-05-05 , Status: CFC for AES54-1-xxxx published 2008-09-16
Intent: Standard , Initiated: 2004-11 , Target: 2008
Current goal: CFC , Goal date: 2008-10

AES-X147B: Shielding of balanced audio wiring within fixed and portable passive connector panels, jack fields, and passive microphone splitters

Project scope: To develop a standard specifying arrangements for the shielding of balanced audio wiring within passive connector panels and passive mic splitters audio cables, both fixed and portable.
Assigned to: SC-05-05 , Status: CFC for AES54-1-xxxx published 2008-09-16
Intent: Standard , Initiated: 2004-11 , Target: 2008
Current goal: CFC , Goal date: 2008-10

AES-X147C: Shields of microphone-level outputs of active equipment other than microphones

Project scope: To develop a standard specifying shielding arrangements for microphone level outputs of active equipment other than microphones
Assigned to: SC-05-05 , Status: CFC for AES54-1-xxxx published 2008-09-16
Intent: Standard , Initiated: 2004-11 , Target: 2008
Current goal: CFC , Goal date: 2008-10

AES-X149: Format and Recommended Usage of the Direct Stream Digital Interchange File Format (DSDIFF)

Project scope: To standardise a file format to allow general interchange of sound files based on DSD-coded data based on an existing specification. The DSDIFF file format is intended for storage and transfer of DSD and DST (encoded DSD) material.
Assigned to: SC-02-08 , Status: Secretariat formatting awaited
Intent: Standard , Initiated: 2004-09-11 , Target: 2007
Current goal: Sec formatted PWD , Goal date: 2009-02

AES-X152: Signal levels and impedances of analog audio interfaces

Project scope: To develop a standard for signal levels and circuit impedances of audio system components and for the specification of these quantities in product data sheets
Assigned to: SC-05-05 , Status: PTD awaited
Intent: Standard , Initiated: 2005 , Target: 2008
Current goal: PTD , Goal date: 2008-10

AES-X153: Care and handling of magnetic hard disc drives

Project scope: To establish care, handling, and storage standards for high capacity magnetic hard drives. The document will include life expectancy assessment, effects of temperature cycling, proper use of the mechanical drives holding the media.
Assigned to: SC-03-04 , Status: Awaiting JTC draft
Intent: Standard , Initiated: 2004-11-19 , Target: 2008
Current goal: PTD , Goal date: 2008-10

AES-X155: Production recording metadata set (iXML)

Project scope:
Assigned to: SC-03-06 , Status: Task group to produce PTD.
Intent: Standard , Initiated: 2006-01 , Target: 2009
Current goal: PTD , Goal date: 2008-10

AES-X161: Digital interface for loudspeakers

Project scope: Proposed scope: To identify the different circumstances in which digitally-interfaced loudspeakers are used, arrange them into groups with similar requirements, specify those requirements, and identify existing standards that would be appropriate. A follow-on project could then develop any new standards that are needed, based on the specified requirements.
Assigned to: SC-02-02 , Status: Comments to IEC 62537 CDV should be sent to this group before the end of November
Intent: Report , Initiated: 2007-01-19 , Target: 2007-06
Current goal: Status report , Goal date: 2008-10

AES-X162: Amendment to AES31-2, File-size extension

Project scope: Adopt the file-size extension technique from EBU T3306 as an optional amendment to AES31-2 BWF
Assigned to: SC-02-08 , Status: PCFC for Amendment 1 to AES31-2 "Extended file format for audio to exceed 4 GByte" posted to SC-02 2008-10-29
Intent: Amendment to standard , Initiated: 2007 , Target: 2008
Current goal: CFC , Goal date: 2008-11

AES-X172: Forensic analysis of Electric Network Frequency (ENF)

Project scope:
Assigned to: SC-03-12 , Status: No action
Intent: Standard , Initiated: 2007-05 , Target: 2008
Current goal: PTD , Goal date: 2009-05

AES-X182: AES/Ethernet Simple Open Protocol

Project scope: to specify a means for transmission over category 5 data cable of unidirectional digital audio and bidirectional control data. Intended applications are active loudspeakers and amplifiers for live performance and for installations
Assigned to: SC-02-02 , Status: Discussion on scope. Report expected to present the justification and parameters for the standard
Intent: Standard , Initiated: 2008-09-03 , Target: 2009
Current goal: PTD , Goal date: 2008-12

For more information about standards activity, e-mail to

AES Standards Home

(C) 2008, Audio Engineering Society, Inc.