La-5448 Processing Three Separate Streams, Rate Shaping Enabled - Linear Acoustic LA-5448 User Manual

Linear Acoustic LA-5448 AC-3 Frame Synchronizer/Rate Shaper User Guide Applications
Satellite
V TR /S erver
A C -3
A C -3
384 kbps
448 kbps
A C -3
A C -3 192 kbps
384 kbps
A C -3 384/448 kbps Local 48 kH z A E S R ef
(A C -3 or P C M )
X
448 448 448
kbps kbps kbps
S ynchronized to Local
R eference , fixed at 448 kbps
M ultip lexer
Figure 3-2 LA-5448 processing three separate streams, rate shaping enabled.
Figure 3.2 shows multiple AC-3 sources being frame synchronized to a local plant
reference as well as being rate shaped to a constant 448 kbps output data rate. Also
shown is a "crash switch" between two AC-3 sources that will be cleaned up and kept
at a constant data rate by the LA-5448. This is useful for commercial insertion appli-
cations.
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