Report of the SC-04-01 Working Group on Acoustics and Sound Source Modeling, of the SC-04 Subcommittee on Acoustics meeting, held in conjunction with the AES 118th Convention in Barcelona, Spain, 2005-05-28

The meeting was convened by vice-chair W. Ahnert.

The agenda and the report of the previous meeting, 2004-10-30, were accepted as written.

Open projects

AES-4id-R: Review of AES-4id-2001: AES information document for room acoustics and sound reinforcement systems - Characterization and measurement of surface scattering uniformity
This was transferred to SC-04-01 from SC-04-02; at the moment there are no activities. This may change after AES-X83 is complete.

Development projects

AES-X081: Liaison with International Organisation for Standardization (ISO) SC 43-2 WG25
This is temporarily transferred to our group and will be rearranged by the Standards Manager

AES-X83 Loudspeaker Polar Radiation Measurements Suitable for Room Acoustics
The latest draft "X83-PTD-050210.DOC" [developed from x83-ptd-041030b.doc] was reviewed in detail. A long discussion covered outstanding issues item by item. All changes and corrections are added.

It is imperative that this Standard should be completely compatible with AES2-R and AES-X72 (SC-04-03) where work is continuing. AES-X83 will be a subset of AES2 as pertains to room acoustic modelling programs. Examples of required compatibility are data file structure and definition of centre of rotation and of cabinet reference point.

This last updated draft will be posted on the FTP not later August 31st, will be ready for approval and should be discussed at the next New York meeting.

Liaisons

The group will continue working closely with SC-04-03 to be certain of compatibility with the revision of AES2.

New projects

There were no new projects

New business

There was no new business

The next meeting is scheduled to be held in conjunction with the AES 119th Convention in New York, USA, 2005-10.