Audio Engineering Society Standards Committee


[Last printing 16 March 2002] Report of the meeting of the SC-03-04 Working Group on Storage and Handling of Media of the SC-03 Subcommittee on the Preservation and Restoration of Audio Recording, held in conjunction with the AES 111th Convention in New York, New York, US, 2001-11-30

Chair T. Sheldon convened the meeting. The agenda and the report from the previous meeting were approved as written.

Current development projects

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

No action was taken.

AES28-R Review of AES28-1997 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

No action was taken.

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

The group reemphasized the need to add a clause on light sensitivity. Evidence is accumulating to confirm the negative influence of light on the life expectancy of digital disks. D. Schuller indicated that he would develop a plan to investigate the light sensitivity issue.

AES38-R Review of AES38-2000 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

The absence of any provisions on the light sensitivity issue was again noted. It was agreed that a clause on this subject also needs to be added to this document.

AES-X51 Procedures for the Storage of Optical Discs, Including Read Only, Write-once, and Re-writeable

The ISO TC 42 Technical Committee on Photography has published ISO 18925:2002 Imaging materials -- Optical disc media -- Storage practices which covers this subject as it applies to photographic uses. If no audio-specific provisions need to be added to the ISO standard, the group will consider retiring the project.

AES-X54 Magnetic Tape Care and Handling
The group considered the only discussion regarding the PCFC posted 2001-07-08. Discussion occurred regarding slotless hubs. It was agreed that S. Winner will draft a new text to be placed as a new clause 4.6.5.

AES-X55 Projection of the Life Expectancy of Magnetic Tape

Discussions in the joint technical commission (JTC) under project AES-X80 were reviewed. Several possible methodologies were mentioned which may hold promise, although more work is needed. D. Schuller stated that in the International Association of Sound and Audiovisual Archives (IASA) an approach will be made to improve relations with the tape industry to encourage tape manufacturers to warn users about any problems arising with specific tape types and formulations.

AES-X80 Liaison with ANSI/PIMA IT9-5

The liaison arrangement between SC-03-04 and the IT9-5 group in the International Imaging Industry Association, an organization maintaining the secretariats of several ISO TC 42 working groups through the American National Standards Institute, was reviewed as it is practiced in the JTC. It was noted that some of the work writing the draft standards for SC-03-04 is being done in the JTC in the role of a task group of SC-03-04 (SC-03-04-L). The group also addressed the relationships within in the JTC, and the relationships between parallel documents of ISO TC 42 and IEC TC 100. It was suggested that the JTC meet under the auspices of the AESSC in the fall of 2002 in the hope of improving international participation in JTC writing activities.

New projects

No project requests were received or introduced.

New Business

There was no new business

The next meeting is scheduled to be held in conjunction with the AES 112th Convention in Munich, Germany.

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(C) 2002, Audio Engineering Society, Inc.