Omnia Audio Omnia.9/XE - Manual (Page 50)

Expander Levels Menu
The Expander Levels menu gives you access to the Relative Threshold, Band<Wideband Distance
Limit, and Maximum Gain controls of each band of Undo’s expanders.
• The Relative Threshold control for each band determines how far below the currently detected
peak the expander threshold sits. Lower thresholds (moving the slider to the right) result in a
greater peak-to-threshold distance and therefore provide more expansion. Higher thresholds
(moving the slider to the left) narrow the peak-to-threshold distance and provide less expansion.
• In addition to an adjustable per-band peak detector with adjustable attack and release speeds
(whose function is described above in the Peak Detector menu section), each channel also has a
wideband peak detector with fixed attack and release speeds. The Band<WB Distance Limit
controls determine the greatest distance by which an individual band’s peak detector can fall
relative to the wideband level and keeps any one band from being expanded if there are insufficient
levels to begin with. For example, if the current wideband peak is -6dB and this control is set to
-10dB, the peak detector for that individual band will not fall below -16dB.
• The Maximum Gain control sets the absolute maximum amount of gain that can be applied to the
audio in each expander band regardless of program material or any other control settings.
The Distance Limit is represented by the dark red bars in the Expander Thresholds meter in the Undo
Meter window.
The Station Menu - Undo Menu
50