Ensemble Designs 8500 Composite / SD Legalizer and Video Processing Frame Sync - Manual (Page 4)

One of three types of Audio Processing submodules can be installed on the 8500 module.
The audio processors have also been designed to provide superior handling of embedded
audio. The disembedder on the input side follows the timing of the SDI input, even if that
input is asynchronous to the house reference. The embedder on the output side is syn-
chronous to house. This allows embedded audio to be safely bypassed around the video
Framestore with the lip sync properly preserved. Embedded audio content is properly re-
synchronized. The audio processors have built-in sample rate conversion allowing usage of
asynchronous AES inputs, while synchronous AC-3 or Dolby-E audio signals may also be
used.
The 8410 4 Channel Audio Processor shown in the block diagram on the previous page
is a submodule with flexible architecture that addresses a wide range of audio handling
needs. The submodule accepts two external AES audio inputs and one embedded audio
group from the SDI video input. Two outputs can be routed to the AES outputs while four
outputs can also be embedded into the SDI output signal.
The 8510 4 Channel Audio Processor option shown below can be configured for most
any combination of audio functions the user might desire. There are AES and analog
audio inputs and outputs and the ability to disembed and embed audio on the serial
digital video stream. Disembedded audio or signals from any of the inputs may be mixed,
shuffled or level controlled and any of the channels re-embedded and/or sent to the analog
or AES output connectors. Full audio delay tracking is included as well as the provision to
add fixed delay to correct incoming lip sync errors. There is built in sample rate conver-
sion allowing usage of asynchronous AES inputs, while synchronous AC-3 or Dolby-E
audio signals may also be used. As always, the comprehensive Avenue control system
allows for monitoring and adjustment of all parameters through networked Touch Screen,
Express Panel, or Avenue PC control.
Model 8500 Series Modules
AES Input
CH 1/2
AES Input
CH 3/4
Analog
Audio I/O
Audio
Disembed
4 Channel
24 Bit
ADC
8510 Audio Processor Option
Source Selection
Level Adjust
Swap & Shuffle
Channel Mixing
Digital
Signal Processing
Audio
Embed
4 Channel
24 Bit
DAC
Output
Routing
Auto
Tracking
Audio
Delay
From 8500 SDI Input To 8500 SDI Output
SDI/AES
1/2 Out
SDI/AES
3/4 Out
Switch S4
Switch S5
8510 Audio Submodule Block Diagram
8500-4