Sonnox Oxford Limiter - Manual (Page 7)

4 ENHANCEMENT SECTION
4 Enhancement
Section
The purpose of the enhancement process
is to provide sample value limiting and overall
programme loudness improvement. The process
follows the Pre-Process section in the signal path,
and is controlled by a separate
ENHANCE fader
from 0% (no action) to 125% (maximum action).
In Normal Mode, the range from 0% to 100% fades
in the effect to full level, at which complete sample
value limiting occurs. Settings from 100% to 125%
further modify the process to progressively increase
loudness and programme density at the expense
of increasing potential distortion artefacts.
SAFE MODE (see Pre-Process Section) allows absolute peak level control without
excessive enhancer action, even when using slow attack settings. In Safe Mode the
enhance process is set to run permanently, and the enhance fader modifies the action of
the process (rather than the proportion of the effect). Setting ranges from 0% to 100%
control the degree of programme loudness boost generated by the enhancer. The control
region from 100% to 125% works identically to Normal Mode. It should be noted that in
Safe Mode signals at all levels are being processed permanently, therefore some minor
changes to the programme dynamics can occur even for a minimum setting of 0%.
The enhance process improves the perceived loudness and presence of the programme
material by modifying the dynamic and harmonic content of the signal. Since the method
used is different from the Pre-Processing section, it can further enhance the perceived
volume of a previously processed signal, while suppressing all signal overloads. As the
limiting action does not involve conventional sample value clipping, harsh distortions are
avoided, and programme detail and dynamic information is largely retained.
Also, since the plug-in has internal headroom, transient levels greater than notional
maximum modulation can pass from the Limiter section into the enhancement stage. This
means that percussive overshoots, that would normally be lost in a conventional limiter (or
would give rise to overloads), may be included within the sonic results of the plug-in,
producing both richer dynamic sonic detail and a useful reduction in the perceived
artefacts of the limiting process, all without giving rise to any sample value overload.
www.sonnox.com 7 Go
to
contents