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In the
System Adjustments
section that follows, set the
Deemphasis
option to
None
. This ensures that the output
from the processor is now pre-emphasized. You will also need to adjust the output levels. Since the digital
exciter will provide the stereo generator function, set the output levels for the discrete left/right channels. This is
done in the
Output Levels
sub-menu, which is a subset of the
Input & Output
menu.
When editing processing parameters, you will probably want to engage the
P.A.C.
(Prediction Analysis Clipper)
function in the Clipper stage. This allows the clipper to compensate for overshoots that result from the
interaction of the AES/EBU output of the Omnia with succeeding digital audio stages.
Processing Presets
Important Note:
Presets are not compatible between the older Omnia-3fm and the Omnia-3fm Turbo styles.
That is, presets created using Omnia-3fm software (WB AGC followed by 3-Band Limiter) will not load
properly on a unit running the newer Omnia-3fm Turbo (fm turbo) software (WB AGC followed by 3-Band
AGC and 3-Band Limiter) due to the presence of the 3-Band AGC section that does not exist in the older
software. Similarly, presets created using Omnia-3fm Turbo software will not load properly on a unit running
the older Omnia-3fm software.
Numerous processing presets have been provided in each style as starting points for customizing the sound of
your station and its format. But note that we do not warrant in any way that these presets are the
de facto
standards
for the format names used. Each was derived in an effort to create a generic starting point for each
respective format. In some markets, these presets may sound too strong or aggressive. In others, they might not
be aggressive enough. Our experiences with the presets in earlier products were that the presets were judged to
be about 50% good and 50% bad. That feedback indicated to us that we were probably about in the middle of
the playing field with respect to where the presets need to be to serve as a starting point for any given market.
With all of that having been said, please rely on the presets to get yourself going. From there, we can provide
assistance, if you desire, or you can venture off to discover new frontiers of processed sound. It is our belief that
there is not any
nirvana
of processed sound, or
special secret
preset that we keep for only the Big Stations. Each
station in each market is unique unto itself. Try to remember that when “crafting” that special sonic personality
for your station. Omnia-3 gives you the power to create a sound totally different from, and better than, your
competitors. Enjoy that power!
We could publish the entire preset list, but chances are that we will continue to develop new or modify existing
presets. So, a list that is guaranteed to be obsolete would be of little help. Besides, the name of each should be
self-explanatory. If you need more clarification, please contact our technical support department.
Adjustments to the processing preset parameters are covered in Chapter 7, Editing Presets
Omnia-3fm Turbo System Adjustments
The system parameters pertaining only to the Omnia-3fm Turbo are found under the
Input & Output
and
Stereo Generator
menus.
Input & Output
Pre-Emphasis
For FM broadcasting worldwide, some form of time constant pre-emphasis, typically 50 µs or 75 µs, is
employed. For North and South America, 75 µs is used. In Europe, Australia and New Zealand, 50 µs is
employed. The factory default pre-emphasis setting is
75 µs
. The
Preemphasis
selection affects the operation of
the audio processing and is applied to both the composite and discrete outputs. The pre-emphasized signal at the
Left/Right outputs can be restored to flat, if needed, by the
Deemphasis
parameter selection.
