Orban Optimod-PC 1101, Operating Manual

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OPERATION ORBAN MODEL 1101
If the G
ATE
T
HRESH
(Gate Threshold) control is turned O
FF
, the DJ B
ASS
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
AX
L
OWPASS
F
ILTER
parameter located in the Con-
figuration page of the I/O Mixer.
Phase Rotator determines if the phase rotator will be in-circuit. The purpose of the
phase rotator is to make voice waveforms more symmetrical. Because it can slightly
reduce the clarity and definition of program material, we recommend leaving it
O
UT
unless program material is mainly speech, where it may result in cleaner sound be-
cause it can substantially reduce the amount of gain reduction that OPTIMOD-PC’s
look-ahead limiter produces on speech waveforms.
Stereo Enhancer Controls
Stereo Enhancer Controls
Name Range
Amount 0.0 ... 10.0
In / Out Out / In
Ratio Lim 70 … 100%
Diffusion Off, 0.3 ... 10.0
Style 222 / Delay
Depth 0 … 10
Table 3-5: Stereo Enhancer Controls
You can operate the stereo enhancer in one of two modes or “styles.” The first emu-
lates the Orban 222 analog stereo enhancer, while the second mode, called Delay,
emulates a popular enhancer from another manufacturer that adds a delayed ver-