Sonnox Oxford Restore - Manual (Page 4)

4
You can imagine a click as a triangular shaped peak in the excitation profile, wider at the bottom
and tapering to a point at the top. Keeping this in mind, you have two potential strategies for
detecting and repairing a click.
The first is to lower the threshold in the
excitation profile until it is just above the
noise floor, near the base of the triangle.
(You can do this either with the Threshold
slider, or drag the threshold line on the
graph itself.) This means that the true
width of the event is more likely to be
found because the threshold is further
down the triangle at the base.
The problem with this approach is that
now many events are registered for
potential repair. As the Sensitivity setting
is reduced, more and more detected events
are rejected and discarded, starting with
the smallest. Thus a low sensitivity means only the largest of the detected events go forwards to
the repair section.
The “Threshold” control determines how many events are detected, and the
“Sensitivity” control determines how many of those detected events go on to be
repaired.
The best setting for the Threshold slider is to put it where the threshold line on the excitation
profile is just above the noise floor, and to lower the Sensitivity slider until the required number
of repairs are occurring.
The other approach is to lower the Threshold until it is just under the top of the peaks. With
Sensitivity at maximum, you are then only correcting the events that breach the threshold. One
potential problem with this method is that it is possible that only the middle of the event is
actually repaired because the width of the event is perceived to be narrower than it actually is
(because the Threshold is at the peak of the triangle where it is narrowest.) In practice, however,
any partial repairs can be fully repaired later on by the DeCrackle section which does tend to
clean up the repairs done in the DePop and DeClick sections.