Omnia Audio Omnia 8x - Manual (Page 28)

14
Processing Adjustments
Here’s where the action is! A block diagram depicts the flow of the audio signal, and illustrates the processing
functions that are available to adjust. A mouse-click on any of the buttons will provide access to that function.
Block Diagram
Input
A mouse-click on the In “tab” button displays the input section sub-menu.
There is a single knob that adjusts both the Left & Right channels equally:
Click on the knob to highlight it and adjust the
mouse wheel (if present) or click-hod and move
the mouse itself left or right to adjust the level.
There is a 30dB range of adjustment between –
20dB and +10dB.
Using normal program audio, a correct gain setting
results in peak indications (the “-” segments)
hitting -12 dBFS (where the level meters turn red)
or a little higher. This corresponds to system
headroom of 12 dB. You may adjust for more
headroom if you wish (lower indications), but
setting the input level for less headroom (higher
meter indications) is strongly discouraged.
WB-AGC (WideBand AGC)
A very flexible wideband leveler section provides smooth, transparent control of the input program. This is
achieved through two significant Omnia innovations, a dual referenced release gate and a hidden, intelligent
“makeup” gain algorithm. The dual gate reference is a unique process that correlates the dynamics of the audio
input signal to a “rolling” reference level, and from that information makes conditional decisions affecting the
character of the release function.
A hidden, Make-Up Gain, control signal determines when the amplitude of the input program suddenly falls to a
reduced level. It then adjusts the side chain gain in order to “fill in” the softer program passages so that the average
level is increased. This allows the AGC function to operate with slower time constants, while significantly