Report of the meeting of SC-02-08 Working Group on Audio-File Transfer and Exchange of the SC-02 Subcommittee on Digital Audio, held in Paris, France, 2006-05-22
The meeting was convened by chair M. Yonge
The agenda and the report of the previous meeting, 2005-10-09, were accepted as written.
Open projects
AES-R1-R: Task Force on High-Capacity Digital Audio Carriers
No action was requested or required
AES31-1-R: Review of AES31-1-2001: AES standard for network and file transfer of audio - Audio-file transfer and exchange - Part 1: Disk format.
The meeting proposed to reaffirm this standard.
AES31-3-R: Review of AES31-3-1999, 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.
There was discussion of the revised draft posted 2006-05-04, plus the comments received over the last few weeks. Yonge will produce a new revision of the PWD to include a proposal to define global and track marks, and to clarify version numbers.
AES46-R: Review of AES46-2002: AES standard for network and file transfer of audio - Audio-file transfer and exchange - Radio traffic audio delivery extension to the broadcast-wave-file format
No action was requested or required
Development projects
AES-X066: File Format for Transferring Digital Audio Data Between Systems of Different Type and Manufacture
A CFC for AES31-2 has been published.
AES-X068: A Format for Passing Edited Digital Audio Between Systems of Different Type and Manufacture That Is Based on Object Oriented Computer Techniques
Project scope: Identify a system, capable of working cross-platform, using object-oriented computer techniques because they offer much greater flexibility than is possible in a simple list.
A proposal has been received that raises the possibility of a standard based on the AAF Association Edit Protocol. A first assessment indicates that some work will be required to define such elements as multi-channel panning; and automation for gain and pan. Members are requested to send their comments to this reflector with the intent to inform and structure the project initiation.
AES-X128 : Liaison with AAF Association
Continuing
AES-X149: Format and Recommend 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.
This project has been dormant for some time, however L. van de Kerkhof presented a new draft and offered to revise this following comments at the meeting and expects to present a modified draft in July.
Liaisons
There were no other liaison issues.
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 121st Convention in San Francisco, CA., US., 2006-10.
