3-46
OPERATION
ORBAN MODEL 1100
The Five-Band Structure’s Full and Advanced Setup Controls
The tables below summarize the Five-band and Band Mix controls in the dynamics
section. The AGC, Equalizer, Stereo Enhancer, and Clipper controls are common to
both the Two-Band and Five-Band structures and are discussed in their own sections
in Section 3. (Note that “advanced” controls are accessible only from 1100 PC Re-
mote software.)
Multiband Drive
control adjusts the signal level going into the five-band compres-
sor, and therefore determines the average amount of gain reduction in the five-
band compressor. Range is 25dB.
Adjust the
M
ULTIBAND
D
RIVE
control to your taste and programming requirements.
Used lightly with a slow or medium release time, the Five-Band compressor produces
an open, re-equalized sound that is appropriate for most video programming. The
Five-Band compressor can increase audio density when operated at a fast or me-
dium-fast release because it acts more and more like a fast limiter (not a compressor)
as the release time is shortened. With fast and medium-fast release times, density
also increases when you increase the drive level into the Five-Band compressor be-
cause these faster release times produce more limiting action. Increasing density can
make loud sounds seem louder, but can also result in an unattractive busier, flatter,
or denser sound. It is very important to be aware of the many negative subjective
side effects of excessive density when setting controls that affect the density of the
processed sound.
Because OPTIMOD-PC’s AGC algorithm uses sophisticated window gating, it is pref-
erable to make the AGC do most of the gain riding (instead of the five-band com-
pressor), because the AGC can ride gain quickly without adding excessive density to
program material that is already well controlled. Use the five-band compressor
lightly, so it can achieve automatic re-equalization of material that the AGC has al-
ready controlled without adding excessive density to the audio or re-equalizing to
an unnatural extent.
The
M
ULTIBAND
D
RIVE
interacts with the
M
ULTIBAND
R
ELEASE
. With slower release time
settings, increasing the
M
ULTIBAND
D
RIVE
control scarcely affects density. Instead, the
primary danger is that the excessive drive will cause noise to be increased excessively
when the program material becomes quiet. You can minimize this effect by activat-
Five-band Controls
Advanced Name
Range
Multiband Drive
0 ... 25
Multiband Gate Threshold
Off, –44 ... –15 dB
Downward Expander
Off, –6.0 … 12.0 dB
B1/B2 XOVER
100 Hz, 200 Hz
B1 MaxDeltGr
0 … 24 dB, Off
B2 MaxDeltGr
0 … 24 dB, Off
B3 MaxDeltGr
0 … 24 dB, Off
B4 MaxDeltGr
0 … 24 dB, Off
B5 MaxDeltGr
0 … 24 dB, Off
Table 3-9: Five-band Controls
