Cobalt Digital FUSION 3G 9901-UDX 3G_HD_SD Up Down_Cross Converter - Manual (Page 25)

9901-UDX-OM (V1.15) 9901-UDX PRODUCT MANUAL 1-21
Introduction
9901-UDX Functional Description
The examples in Figure 1-8 show the automatic enable/disable upmixing
function applied to example selected channels
Bus Ch 1 thru Bus Ch 6 . As
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).
Figure 1-8 Upmixing Auto Enable/Bypass with Example Sources
Loudness Processor. (See Figure 1-9.) The loudness
processor (option +LP ) function receives up to six selected channels from the
internal bus and performs loudness processing on the selected channels. A
loudness processing profile best suited for the program material can be
selected from several loudness processing presets. Refer to catalog or
Fusion3G
® manual supplement OPT-SW-F3GLP-MS for more information.
Note: Discussion and example here describes 5.1-channel loudness processor.
Stereo and dual-stereo processors operate similar to described here.
Bus Ch 1 – Ch 16
>
From
Internal
Bus
Bus Ch 1
Bus Ch 2
Bus Ch 3
Bus Ch 4
Bus Ch 5
Bus Ch 6
L
R
(C)
(LFE)
(Ls)
(Rs)
With all detected signal levels on
Bus Ch 3, 5 and 6 below
threshold, upmixer is active and
generates new 5.1 content.
Threshold
Detect
5.1 Upmix
Bus Ch 1 – Ch 16
>
Bus Ch 1
Bus Ch 2
Bus Ch 3
Bus Ch 4
Bus Ch 5
Bus Ch 6
L
R
(C)
(LFE)
(Ls)
(Rs)
Threshold
Detect
Because the selected
channels are already carrying
viable content, upmixing is
bypassed, allowing the six
original Bus Ch 1 – Ch 6 to
pass through upmix outputs
Upmix L thru Upmix Rs
unmodified.
With any detected signal levels
on Bus Ch 3, 5 or 6 above
threshold, upmixer is bypassed.
- 20 dBFS
- 60 dBFS
Above Threshold
(Bypass)
C Ls Rs
- 20 dBFS
- 60 dBFS
Below Threshold
(Overwrite)
C Ls Rs
From
Internal
Bus
Upmix L
Upmix R
Upmix C
LFE
Upmix Ls
Upmix Rs
Upmix outputs
consist of new
upmix content