Cobalt Digital OBSIDIAN 3G 9502-DCDA-3G Downconverter - Manual (Page 13)

9502DCDA-OM (V1.3) 9502-DCDA PRODUCT MANUAL 1-9
Introduction
9502-DCDA Functional Description
Audio Processor Description
The audio processor operates as an internal audio router. This function
chooses from the following inputs:
• 16 channels of embedded audio from the SDI video input (1-to-1
routing to SDI output)
The router function provides the following audio outputs:
• 16 channels of embedded audio on SDI processed outputs
• 16 channels of AES de-embedding on eight AES outputs pairs
Note: Although card de-embedding supports de-embedding to AES pairs 1 thru 8,
current rear module options support output only to pairs 1 thru 4.
The processor function provides group enable/disable and de-embedding of
the 16-channel embedded audio SDI input.
Audio Down Mix Function
(See Figure 1-3.) The Audio Down Mixer function provides for the selection
of any five embedded channels serving as Left (
L ), Right ( R ), Center ( C ), Left
Surround ( Ls ), and Right Surround ( Rs ) individual signals to be multiplexed
into stereo pair Down Mix Left ( DM-L ) and Down Mix Right ( DM-R ). The
resulting stereo pair DM-L and DM-R can in turn be routed to any embedded
audio pair as desired (or de-embedded to an AES audio output).
Figure 1-3 Audio Down Mix Functional Block Diagram with Example Sources
DM-L
L
R
C
Ls
Rs
DM-R
Emb Ch 3
Emb Ch 5
Emb Ch 6
Emb Ch 9
Emb Ch 11
Embed Ch 1 - Ch 16