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SC-02-01 meeting, Online, 2021-05

Report of the meeting of the SC-02-01 Working Group on Digital audio measurement techniques, held online, 2020-05-12.

The meeting was convened by chair J. Datta.

The report of the previous meeting, held online 2020-10-06, was approved as written.

The agenda was approved as written.

In attendence were Ahmed Gelby, Al Walker, Anthony Kuzub, David Andrews, David Prince, David Ranada, Fred Morgenstern, Ian Dennis, Jayant Datta, Paul Treleaven, Richard Cabot, Stephen Scott, Wataru Hatano

Projects assigned to this group but not mentioned here had no action requested or required - see www.aes.org/standards/meetings/project-status.cfm for details.

Open Projects:

AES17-R Review of AES17-2015: AES standard method for digital audio equipment - Measurement of digital audio equipment
Status: As per the discussion at the last meeting, sections 3.12.2 (Signal level, FS) and 3.12.3 (Decibels full scale dBFS) have clarifying notes to point out that a full amplitude sine wave is 0 dBFS, whereas a full amplitude square wave would be at 3.01 dBFS, etc. – updated document is online

AES-12id AES Information Document for digital audio measurements - Jitter performance specifications
Status: At the last meeting, this group approved the proposal to change the language to eliminate the usage of insensitive terms – the language in Section 4 has been updated.

Further review of the document resulted in a few changes: (a) to conform with industry usage, dBc/rtHz has been replaced with dBc/Hz throughout, (b) the Annexes were swapped and the informative reference section renamed to conform with current IEC practice, and (c) minor edits were made for consistency – updated document is online

AES-X217 Audio ADC test method and performance specification for archiving and preservation applications
Status: Task group (Richard Cabot, Ian Dennis, Chris Lacinak and Rebecca Chandler (Chris’ colleague) and Jayant Datta) documented discrepancies brought up by different reviewers. Subsequently, the potential discrepancies have been categorized and most have been resolved. Expected to complete this by the end of 2021-05 and circulate it within SC-02-01. After receiving feedback from SC-02-01, feedback will be sought from SC-03-06 [Working Group on Digital Library and Archive Systems].

Liaisons

No new liaison information.

New projects

No new projects proposed; however, SC-05-05 [Working Group on Grounding and EMC Practices] may seek some references/information from SC-02-01 in the near future.

New business

No new business proposed

The next meeting will be scheduled in conjunction with the AES 151st Convention, to be held online in October 2021.

AES - Audio Engineering Society