AES Standards Committee Proposes New Standard

Jan 30, 2002 12:00 PM, Editors


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The Audio Engineering Society Standards Committee (AESSC) has published a draft standard, AES47-xxxx, as a Call for Comment. Draft AES47-xxxx specifies the use of Asynchronous Transfer Mode (ATM) as a means of providing digital audio transmission across digital networks with high performance with regard to bandwidth, latency, jitter and other relevant factors.

Asynchronous Transfer Mode (ATM) offers the capacity to carry uncompressed audio across local and wide-area networks with a very small and constant latency, and with a guaranteed quality of service. It uses point-to-point topology to avoid the time delays inherent in other forms of packet routing. Circuit set up, routing and switching are managed in a similar way to ISDN, but calls are not restricted in bandwidth.

AES47-xxxx specifies a means to carry multiple channels of audio in linear PCM or AES-3 format over an ATM layer service conforming to ITU-T Rec.I.150. It includes a means to convey, between parties, information concerning the digital audio signal when setting up audio calls across the ATM network. It does not specify the physical interface to the network.

The call for comment on DRAFT AES47-xxxx can be accessed at by clicking on the link, "Drafts out for public comment." If you would like to submit comments on DRAFT AES47-xxxx, please follow the formal procedures set out on the Web page. The AES will review and consider all comments that are submitted by April 18, 2002. This document will be approved by the AES after any adverse comment received has been resolved, and all comments will be published on the Website. If you are unable to obtain this draft document from the Website, please contact standards manager Mark Yonge at

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