Sonnox Oxford SuprEsser - Manual (Page 33)

4.3 Graphical
Screen
Controls 4 DESCRIPTION OF CONTROLS
To help you find the threshold, the most important place to look is the red time-domain
peak reading (3). This gives the peak dB level of the audio signal leaving the bandpass
filter. Below this, you will see a blue line representing the threshold (1). The distance
between these two lines indicates the amount of gain reduction of peaks that you will
achieve. With a ratio of 2:1 (the default), if the threshold is 12dB below the peak, you will
tend to get 6dB of gain reduction when the peaks occur.
Once you see how it works, you will be able to set the threshold almost without
listening!
4.3.1 Explanation
of
Controls
Band
Filter
Lower
and
Upper
Cut-off
Drag
Handles
These can be dragged to move the lower or upper edges of the band filter as desired.
Using the Left mouse button, the handles follow the pointer. The Right mouse
button, or Shift + Left mouse button, provides a much finer adjustment. The handles
sit on top of a vertical blue line that indicates where the lower and upper limits of the
band filter are, or to be more precise, the used filters’ -3dB cut-off points.
Bandpass
Filter
Audio
Output
Peak-Hold
Level
The bandpass peak-hold meter shows the peak signal level leaving the bandpass
filter, prior to being fed to the Dynamics processing. This is a very important piece of
information because the distance between this line and the threshold line (6) is the
amount of gain reduction (of peaks) that you will end up with. The hold time is 2
seconds.
Central
Filter
Drag
Handle
This handle allows you to drag the centre frequency of the band window up and
down the scale by moving left/right. It also allows you to widen or narrow the band
window by dragging up/down. Using Shift + Left mouse button, or Right mouse
button, allows you to achieve finer adjustment.
Alternatively, clicking on any arbitrary point on the graph will centre the band filters
around this point in the frequency spectrum. Furthermore, if you hold the mouse
down, you can then drag the filter up or down, or widen/narrow it in the same way
as with the centre drag handle.
This allows you to very slickly widen the window, look at the FFT peaks, and then
home in on one (by clicking and dragging down, in one single movement. This way
you can quickly isolate and listen to each of the peaks that occur regularly, to find
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