Omnia Audio Omnia.ONE - Manual (Page 54)

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OV Lim Drv (Overall Limiter Drive)
Adjusts the overall amount of drive to all four bands of the multiband Limiter section
simultaneously over a + / - 6 dB range. Higher settings will increase density. This can
increase loudness but be careful because too much gain reduction in the limiters can lead
to a “wall of sound” effect that can cause the program material to sound “smashed”.
Lower settings will reduce the density, providing a more “open”, natural and dynamic
sound. It may be helpful to think of the limiters as “dynamic clipper allocators”, acting as
“gatekeepers”, controlling the density of the audio signal that reaches the following
clipper.
<-Exit
Click on this option to return to the Adjust Processing submenu.
Low Band AGC
Attack
The attack control adjusts how fast the AGC responds to sudden increases in audio level,
and higher numbers equate to faster response times. Faster attack times reduce the
transient nature of the input audio, while slower attack times improve it. Extremely slow
attack times must be used with caution so as not to allow later stages to be overloaded
during the time when the AGC is adjusting the level downwards. Likewise, extremely
fast attack times (especially when combined with very slow release times) can “punch
holes” or overreact to the band of audio being processed.
Release
The release control adjusts how fast the AGC recovers from periods of more gain
reduction when the input audio levels fall. Faster release times (higher numbers) result in
a more dense sound. Even though the Omnia uses program controlled release algorithms,
setting the control for extremely fast release times can result in ‘pumping’.
Gt Thresh (Gate Threshold)
When the input audio falls below a certain level, the gain control action of the AGC stage
is “frozen” by the gate. The level at which this freeze, or hold takes place is controlled by
the setting of the Gate Threshold control. Higher numbers cause the gate to activate at
higher audio levels. In most applications this control should be adjusted to cause gating
action to occur when the input audio falls about 20dB below nominal. The action of gate
also prevents noise rush-up during periods of no audio or during pauses in speech.
RTZ Speed (Return To Zero Speed)
RTZ stands for Return To Zero. What RTZ does is return the gain of the AGC band to
the selected amount of gain reduction (See RTZ Level below) in the absence of audio.
RTZ speed controls how fast this adjustment takes place – i.e., how long it takes the AGC
to move to the target RTZ level.
RTZ Lvl (Return To Zero Level)
This control adjusts the gain level to be achieved by the AGC section during lapses in
audio. The primary purpose of RTZ is to prevent the AGC from increasing the gain
unnecessarily during lapses in audio, which would result in an increase in noise level.
<-Exit
Click on this option to return to the Adjust Processing submenu.
Mid Band AGC
See description of settings for Low Band AGC