Optimod-AM 9400 V1.2 Operating Manual - Orban
Optimod-AM 9400 V1.2 Operating Manual - Orban
Optimod-AM 9400 V1.2 Operating Manual - Orban
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OPTIMOD-<strong>AM</strong> DIGITAL OPERATION 3-35<br />
sponse in this frequency range is flat. The result is natural-sounding bass on male<br />
voice.<br />
If you like a larger-than-life, “chesty” sound on male voice, set this control away<br />
from OFF. Then, gating causes the gain reduction of the lowest frequency band to<br />
move to the same gain reduction (minus a gain offset equal to the numerical setting<br />
of the control) as its nearest neighbor when gated. You can therefore set the maximum<br />
gain difference between the two low frequency bands, producing considerable<br />
dynamic bass boost on voice.<br />
The difference will never exceed the difference that would have otherwise occurred<br />
if the lowest frequency band were independently gated. If you are familiar with<br />
older <strong>Orban</strong> processors, this is the maximum amount of boost that would have occurred<br />
if you had set their DJ BASS BOOST controls to ON.<br />
The amount of bass boost will be highly dependent on the fundamental frequency<br />
of a given voice. If the fundamental frequency is far above 100Hz, there will be little<br />
voice energy in the bottom band and little or no audio bass boost can occur even if<br />
the gain of the bottom band is higher than the gain of its neighbor. As the fundamental<br />
frequency moves lower, more of this energy leaks into the bottom band,<br />
producing more bass boost. If the fundamental frequency is very low (a rarity), there<br />
will be enough energy in the bottom band to force significant gain reduction, and<br />
you will hear less bass boost than if the fundamental frequency were a bit higher.<br />
If the MB GATE THRESH (Gate Threshold) control is turned OFF, the DJ BASS boost setting<br />
is disabled.<br />
BRILLIANCE sets the drive level into the Band 5 compressor in the digital radio<br />
channel only. Because band 4 gain reduction determines band 5 gain reduction, this<br />
control has the same effect as the BAND 5 OUTPUT MIX control. It is included only for<br />
compatibility with <strong>Orban</strong>’s 8400 and 8500 HD processors so that you can duplicate<br />
the sound of these processors’ presets by copying their control settings to the <strong>9400</strong>.<br />
HF ENH (“High Frequency Enhancer”) is a program-adaptive 6 dB/octave shelving<br />
equalizer with a 4 kHz turnover frequency. It constantly monitors the ratio between<br />
high frequency and broadband energy and adjusts the amount of equalization in an<br />
attempt to make this ratio constant as the program material changes. It can therefore<br />
create a bright, present sound without over-equalizing material that is already<br />
bright.<br />
LOWPASS ("Lowpass Filter Cutoff Frequency") allows you to decrease (but not increase)<br />
the low-pass cutoff frequency compared to its setting in active transmission<br />
preset. See (7.B) on page 2-26.<br />
LPF SHAPE ("Lowpass Filter Shape") allows you to decrease (but not increase) the<br />
low-pass filter's shape compared to its setting in active transmission preset. See step<br />
(7.C) on page 2-27.<br />
HIGHPASS ("Highpass Filter Cutoff Frequency") allows you to increase (but not decrease)<br />
the highpass cutoff frequency compared to its setting in active transmission<br />
preset. See step( 7.D) on page 2-28.