Dolby Laboratories DP524 - Manual (Page 13)

SECTION 2
APPLICATIONS
The Dolby Model DP524 is suitable for a variety of point-to-point and point-to-
multipoint digital transmission applications, including cable, telecommunications
and satellite or terrestrial microwave links. The very high audio quality and low,
spectrum-efficient data rates of the AC-2 and AC-3 coding process make them
particularly appropriate for these applications.
2.1 Cable
Whether for audio-only services or for an enhanced digital audio service
accompanying video, the DP524 is ideally suited to cable applications. The
availability of low data rates permits efficient use of cable bandwidth as either a
baseband signal or as a subcarrier above video.
2.2 Telecommunications
The Model DP524 can be used with T1 or ISDN lines for point-to-point
communications. Film and recording studios, as well as mastering facilities, can be
interconnected with audio and control data to enable multi-site, real-time
operations. Broadcast applications include STL, ICR, and backhaul operations.
Because only a small portion of the T1 bit stream is used, the residual capacity
remains available for additional audio channels or other services (e.g., voice or
computer data), or fractional service can be ordered. In ISDN applications, the
number of "B" channels needed is determined by the chosen bit rate.
MAIN