Omnia Industries TV Cables 6FM 用户手册
Omnia 6 Use and Installation Guide – Version 1.00a
70
70
processor. Omnia-6 makes loudness an effortless exercise for all formats.
One more confession. It’s also OK for your station to not sound loud, yet sound incredibly musical and
grunge-free, because the Omnia-6 has given you the choice. Omnia6-fm is a system that maximizes the
audio quality of your signal, yet at the same time satisfies your competitive requirements.
grunge-free, because the Omnia-6 has given you the choice. Omnia6-fm is a system that maximizes the
audio quality of your signal, yet at the same time satisfies your competitive requirements.
Quality versus Loudness
The trade-off between quality and loudness is primarily determined by how you choose to use the limiting
and clipping sections. While each function alone will generate “dial presence,” they each have different
advantages, as well as side effects.
and clipping sections. While each function alone will generate “dial presence,” they each have different
advantages, as well as side effects.
When excessive limiting is used, intermodulation distortion is increased, making the audio sound "mushy",
and "smeared." The added short term density can also cause the audio to be “tight”, “squashed", or “dense.”
The "dynamics" artifacts caused by excessive limiting might sound like “pumping,” “breathing.” The rule
for limiting is "a little goes a long way!"
and "smeared." The added short term density can also cause the audio to be “tight”, “squashed", or “dense.”
The "dynamics" artifacts caused by excessive limiting might sound like “pumping,” “breathing.” The rule
for limiting is "a little goes a long way!"
When excessive clipping is used, harmonic distortion is increased. The audio level is in effect “running into
the brick wall.” Too much clipping can cause the audio to sound “broken-up,” “torn,” “rough,” or “edgy.”
As you might imagine, the harder the limiters and clippers are driven, the louder the audio perception.
However, you are also much more likely to encounter increased intermodulation and/or harmonic
distortion.
the brick wall.” Too much clipping can cause the audio to sound “broken-up,” “torn,” “rough,” or “edgy.”
As you might imagine, the harder the limiters and clippers are driven, the louder the audio perception.
However, you are also much more likely to encounter increased intermodulation and/or harmonic
distortion.
The following sections are provided to assist you in designing the personality of your station’s sound. As
we said earlier, there is no precise recipe for setting up audio processing. While there are some basic
fundamentals that you can use to get started toward the sound that you desire, it may require a concerted
effort with extended listening and subtle processing changes over time to achieve your ultimate goal. Just
remember to know your competition, know your goals, take your time, and adjust methodically.
we said earlier, there is no precise recipe for setting up audio processing. While there are some basic
fundamentals that you can use to get started toward the sound that you desire, it may require a concerted
effort with extended listening and subtle processing changes over time to achieve your ultimate goal. Just
remember to know your competition, know your goals, take your time, and adjust methodically.
Increasing Loudness
Try to resist the temptation to just crank up the aggressive processing sections, like the limiters. Those will
add loudness of course, but usually at the cost of quality. Many times, building a little more RMS level in
the AGC sections will do the trick instead, and with no obvious sonic penalties. The following are some
suggestions on where to begin to make changes. We suggest that you them in the order described.
add loudness of course, but usually at the cost of quality. Many times, building a little more RMS level in
the AGC sections will do the trick instead, and with no obvious sonic penalties. The following are some
suggestions on where to begin to make changes. We suggest that you them in the order described.
Increasing loudness can be accomplished in four ways:
1. Alter the following parameters in the AGC sections:
• Increase the AGC Drive to the WB (wideband) AGC section.
• Increase the Drive to each band of the Multband AGC in the AGC XO (crossover) screen or
reduce (set to lower numbers) the attack time of the WB AGC section, causing an increase in
activity in the Multiband AGC sections.
activity in the Multiband AGC sections.
• Increase the Release time settings in each band to make it operate faster.
• Increase the amount of Make-Up Gain in each band.
2. Modify the Multiband Limiter sections: