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Linear Acoustic LA-5448 AC-3 Frame Synchronizer/Rate Shaper User Guide
Chapter 3: Applications
The LA-5448 is intended to be used in an emission (transmission) environment. This
chapter shows several applications of the system as it is intended to be used. Of
course other applications are possible:
•
Frame synchronizer for multiple AC-3 streams, no rate shaping
•
Frame synchronizer plus rate shaping for multiple AC-3 streams
Satellite
Figure 3-1 LA-5448 processing three individual AC-3 streams, rate shaping disabled
Figure 3-1 above shows three sources being frame synchronized to a local plant ref-
erence signal. Data rates at the output are unchanged, but errors can be mitigated by
enabling Silent Frame mode.
AC-3 448 kbps
AC-3 192 kbps
448
192
kbps
kbps
Synchronized to Local
Reference
Multiplexer
13
AC-3
384 kbps
X
384
kbps
Local 48 kHz AES Ref
(AC-3 or PCM )
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