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OPTIMOD-PC
If you like a larger-than-life, "chesty" sound on male voice, set this control away
from O
. When so set, gating causes the gain reduction of the lowest frequency
FF
band to move to the same gain reduction (minus a gain offset equal to the numeri-
cal setting of the control) as its nearest neighbor when gated. You can therefore set
the maximum gain difference between the two low frequency bands, producing
considerable dynamic bass boost on voice. This setting might be appropriate for
news and sports.
The difference will never exceed the difference that would have other-
wise occurred if the lowest frequency band were gated independently. If
you are familiar with older Orban processors like OPTIMOD-FM 8200, this
is the maximum amount of boost that would have occurred if you had
set their DJ B
The amount of bass boost will be highly dependent on the fundamental
frequency of a given voice. If the fundamental frequency is far above
100Hz, there will be little voice energy in the bottom band and little or
no audio bass boost can occur even if the gain of the bottom band is
higher than the gain of its neighbor. As the fundamental frequency
moves lower, more of this energy leaks into the bottom band, and you
hear more bass boost. If the fundamental frequency is very low (a rarity),
there will be enough energy in the bottom band to force significant gain
reduction, and you will hear less bass boost than if the fundamental fre-
quency were a bit higher.
This control is only available in the Five-Band structure.
If the G
boost setting is disabled.
HF Enhance is a program-adaptive, 6 dB/octave shelving equalizer with a 4 kHz
turnover frequency. It constantly monitors the ratio between high frequency and
broadband energy and adjusts the amount of equalization in an attempt to make
this ratio constant as the program material changes. It can therefore create a bright,
present sound without over-equalizing material that is already bright.
Highpass Filter determines if a sweepable 18 dB/octave highpass filter will be
placed in-circuit before other processing. This filter is useful for reducing low fre-
quency noise, particularly when OPTIMOD-PC is being used for production or mas-
tering.
Lowpass Filter control sets the bandwidth (and therefore the amount of high fre-
quency signal OPTIMOD-PC passes) from 10 kHz to 20 kHz. The lowpass filter can
replace any anti-aliasing filters in downstream equipment. Set the filter to 20 kHz
(full bandwidth) for downstream equipment with sample rates of 44.1 or 48 kHz. Set
the filter to 15 kHz for 32 kHz sample rate. For other sample rates, set the filter so
that it is as close as possible to 45% of the sample rate without exceeding 45%.
This setting is unique to the preset in which it resides. Regardless of its
setting, OPTIMOD-PC will not permit the system bandwidth to exceed the
bandwidth set by the M
figuration page of the I/O Mixer.
B
controls to O
ASS
OOST
(Gate Threshold) control is turned O
T
ATE
HRESH
L
AX
OWPASS
.
N
, the DJ B
FF
parameter located in the Con-
F
ILTER
3-31
OPERATION
ASS
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