Orban OPTIMOD 8685, Руководство по эксплуатации

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OPTIMOD SURROUND PROCESSOR INSTALLATION
2-35
C) You can mix the audio applied to 2.0 processor #1 into the Lf and Rf channels
of the surround processing. (Only 2.0 processor #1 has this feature.) This can
be useful if you want to process some program material (such as a newsroom
or outside broadcast feed) more heavily than the remaining program ele-
ments in a surround mix.
Set the 2.0_1
TO
S
URROUND
I
NPUT
M
IX
control to L
F
/R
F
I
N
, LF/R
F
L
IM
or N
O
M
IX
.
•
L
F
/R
F
I
N
mixes the unprocessed 2.0 left and right inputs (as set in the Input
Routing Matrix) into Lf and Rf channels feeding the surround processor.
•
LF/R
F
L
IM
mixes the processed "Multiband" signal from the 2.0 processor
into the surround channel’s Lf and Rf channels. This mixing occurs just be-
fore the surround loudness controller and look-ahead limiter so that these
elements can control the loudness and peak level of the mix.
The setting of 2.0 D
IALNORM
does not affect this 2.0 feed. The S
URROUND
D
IALNORM
setting determines the loudness of the surround processing, in-
cluding the 2.0 material that has been mixed in.
This mode can be used to process a 2.0 source (for example, a newsroom
feed) before it is mixed with the main surround audio (for example, a
network feed or commercials).
•
N
O
M
IX
makes 2.0 processor #1 completely independent of the surround
processing.
•
The
2.0
TO
S
URROUND
I
NPUT
L
EVEL
control sets the amount of 2.0 material
mixed into the surround processing.
15. Configure the input routing switcher for 5.1 or 7.1 surround processing.
A) L
OCATE
to I
NPUT
/
OUTPUT
> I
NPUT
R
OUTING
( I
NPUT
/O
UTPUT
4).
B) If you wish to use the surround processor for 5.1 material, set the
L
B
/R
B
S
OURCE
control to N
ONE
. For 7.1 material, set the L
B
/R
B
S
OURCE
control to
match the input audio channel carrying the Lb/Rb audio.
Failure to carry out this step can cause spurious gain reduction in the sur-
round processor if material unrelated to the 5.1 source accidentally feeds
the Lb and Rb channels.
16. Set the surround-to-2.0 downmix values (optional).
The 8685 creates two separate 2.0 downmixes from the surround channels:
(1) A downmix of the inputs to the surround processing. This downmix is only
used as one possible source to drive the input of any of the 2.0 processors. It is
selected in the Input Routing Switcher as “Ldm/Rdm.”
(2) A downmix of the surround processing’s output channels. This downmix ap-
pears as an available source (“Ldm/Rdm”) in the Output Routing Matrix and is
never applied to a processor's input.