SC-03-02 meeting, Munich, 2009-05

Meeting of the SC-03-02 Working Group on Transfer Technologies of the SC-03 Subcommittee on the Preservation and Restoration of Audio Recording, held in Munich, Germany, 2009-05-08

The meeting was convened by temporary chair D. Schueller.

The agenda and the report of the previous meeting, held in San Francisco, 2008-10-03, were approved as written.

Development projects

AES-X064: Test methods and materials for archival mechanical media
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, Initiated: 2007
Intent: Information document, Target: 2012
Current goal: Status report, Goal date: 2009-05

It was reported that this project is not fully completed. It has been previously decided to publish, if possible, a correction curve which would reveal the difference in the high frequency response of a typical cartridge between a pressing in vinyl and a pressing in shellac, to increase the relevance of the calibration disc. This may be achievable by pressing a test disc in shellac material and take the correction curve from there.

AES-X106: Styli 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, Initiated: 2000-02
Intent: Information Document, Target: 2008
Current goal: PWD, Goal date: 2009-06

The document was discussed and amended in response to a written request made by a WG member. It was also decided to add illustrations of stylus shapes to the document


There were no other liaison issues.

New Projects

The production of a calibration cylinder and an LP stereo test record were considered. No formal decisions were taken in this meeting. No other new projects were received or proposed.

New business

The next meeting will be scheduled in conjunction with the AES 127th Convention in New York, NY., US., 2009-10.

AES - Audio Engineering Society