Cobalt Digital Inc 9323 Product Manual page 16

1
Note: In either case shown here, the unselected
channels (in this example, Emb Ch 7 thru Ch
16) are not involved in this process and always
pass unaffected.
1-12
The examples in Figure 1-7 show the automatic enable/disable up-mixing
function applied to example selected channels
shown and described, the processing is contingent upon the signal levels of
the channels selected to carry the new 5.1 upmix relative to the selected
threshold (in this example, -60 dBFS). Note also that this function is applied
after the Audio Routing/Gain Control function. Because all audio inputs pass
through the Audio Routing/Gain Control function before the up mixer, the up
mixer can use embedded, AES discrete, and/or analog audio sources.
From Audio
Routing/Gain
Emb Ch 1 – Ch 16
Control
>
With all detected signal levels on
Emb Ch 3 – Ch 6 below
threshold, upmixer is active and
overwrites with new 5.1.
- 20 dBFS
- 60 dBFS
Below Threshold
From Audio
Routing/Gain
Emb Ch 1 – Ch 16
Control
>
With any detected signal levels
on Emb Ch 3 – Ch 6 above
threshold, upmixer is bypassed.
- 20 dBFS
Above Threshold
- 60 dBFS
Figure 1-7 Up Mix Auto Enable/Bypass with Example Sources
9323 GROUP PRODUCT MANUAL
Emb Ch 1
Emb Ch 2
Emb Ch 3
Emb Ch 4
Emb Ch 5
Emb Ch 6
(Overwrite)
To Audio
Embed
Threshold
Emb Ch 1
Emb Ch 2
Emb Ch 3
Emb Ch 4
Emb Ch 5
Emb Ch 6
(Bypass)
X
To Audio
Embed
932X Functional Description
thru
Emb Ch 1 Emb Ch 6
5.1 Up Mix
Threshold
Detect
L – Emb Ch 1
R – Emb Ch 2
L
C – Emb Ch 3
R
LFE – Emb Ch 4
(C)
Ls – Emb Ch 5
(LFE)
Rs – Emb Ch 6
(Ls)
(Rs)
Selected channels Emb Ch 1 – Ch 6
are overwritten with the new 5.1
upmix content.
5.1 Up Mix
Detect
X
L
R X
(C)
(LFE)
(Ls)
(Rs)
Because the selected channels are
already carrying viable content,
upmixing is bypassed, allowing the
six original Emb Ch 1 – Ch 6 to pass
unaffected.
. As
9323G-OM (V4.6)