Report of the meeting of the SC-03-06 Working Group on Digital Library and Archive Systems of the SC-03 Subcommittee on the Preservation and Restoration of Audio Recording held in San Francisco, 2010-11-04.
The meeting was convened by chair David Ackerman as the first part of a joint SC-03-06 / SC-03-07 meeting
The agenda and the report of the previous meeting, 2010-05-24, were accepted as written.
Development projects
AES-X098B Audio object structures for preservation and restoration
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.
status: Schemas to be checked, then sec to produce final PWD
The chair reported that the schema had been checked and validated, with a number of mismatches between the document and the schema corrected. These were addressed during the meeting. The remainder of the meeting was devoted to integrating the EBU editUnitNumberType into the schema in order to achieve timing compatibility with the draft AES-X134 Audio Core. During the discussion, a few recommendations were made to adjust the data types of editUnitNumberType attributes to prevent potential divide-by-zero errors. These suggestions were accepted by T. Vaervagen. The updated schema was uploaded to the AES web space to facilitate testing and validated with the integrated editUnitNumberType changes.
AES-X098C Administrative metadata for audio objects - Process history schema
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.
status: 'Worker' type should reference the AES-X134 standard. A revised PWD is expected.
Discussion on this project was deferred in order to permit the completion of AES-X098B above.
AES-X155 AES standard for audio metadata - Production recording metadata set (iXML)
scope: This document specifies a format for communicating file- and project-based production metadata between various stages of production and post production workflow. It may also have utility in other areas. The format, iXML, uses the XML standard for communication of tagged metadata. The XML-formatted metadata may be written to a data chunk inside a Broadcast Wave file, such as AES31-2, or some other suitable file type. iXML standardises the interchange of production information, and provides an extensible framework to add new private or public data as needs develop, while permitting the specification to be expanded in a consistent and compatible manner.
It was noted that this document is awaiting reformatting work to account for case sensitivity in the XML.
New projects:
No new projects were received or proposed.
New business:
There was no new business.
The next meeting will be scheduled in conjunction with the AES 130th
Convention in London, 2011-05.
