26  Digital Interfacing and Synchronization

The AES/EBU Interface

(AES = Audio Engineering Society; EBU = European Broadcasting Union).

This format allows two channels of digital audio to be transferred serially over one balanced interface using RS422 drivers and receivers. Figure 138 shows the hardware. This allows the two channels to be transferred over distances up to 100 m.


Figure 138  AES/EBU hardware interface

The format of the ‘sub-frame’ is shown in Figure 139.


Figure 139  AES/EBU subframe format

The ‘Sync’ bits can be one of three ...

Get Sound Engineer's Pocket Book, 2nd Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.