Omnia Audio Omnia.ONE - Manual (Page 82)

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AGC Att (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 because allowances must be made in later stages
to not overload them during the time when the broadband AGC is adjusting the level
downwards.
AGC Rls (AGC 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 WB AGC
section to an internally determined amount of gain reduction 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 platform level.
<-Exit
Click on this option to return to the Adjust Processing submenu.
Enhancers
There are 4 controls in the Enhancers menu: Deep Bass, Phat Bass, Warmth and HF EQ. The first three
controls give you control over the Omnia’s built-in bass equalizer.
For the transmission side of conventional AM broadcasting, the NRSC pre-emphasis (high frequency
boost) is used. The HF EQ control sets the degree of pre-emphasis along the NRSC curve.
Deep Bass
Adds ‘girth’ to the audio by enhancing very low frequencies such as kick drum
fundamentals or very low bass notes that may be present in the input audio program.
Phat Bass
An Omnia exclusive, Phat Bass adds harmonic overtones to the lower bass frequencies.
The addition of these overtones causes small speakers to seem to produce bass response
that they are not actually capable of producing because the human brain equates the
presence of low frequency harmonics to the missing fundamentals that the small speaker