Wheatstone Corporation D-9, Техническое руководство, Страница: 50 / 124

D Y N A M I C S P R O C E S S I N G C O N T R O L P A N E L
page 5 – 3
D-9 / Oct 2003
While the overall gain-reduction scheme is “feed-forward”,
the heart of the detector stage itself is a feedback limiter; this
allows for this carefully-contrived loosely-damped servo-loop to
permit far more interesting dynamic effects.
The compressor is “soft-knee”, meaning the compression
ratio increases slowly with increasing applied level, greatly
easing the sonic transition into full compression; it helps avoid
the “snatching” and “pumping” at threshold that many “hard-
knee” dynamics units exhibit.
A full range of controls is available over the compressor’s
behavior:
DYN IN
A DYN IN button toggles the settings in and out of the signal
path. Each input channel also has its own “DYN” button to allow
engaging these functions directly from the input panel. Whenever
dynamic functions are engaged, the input channel LCD display will
show a gain reduction bargraph meter, indicating both that the dynam-
ics functions are active, and the amount of gain reduction being
generated.
In addition, the DCM master LCD display will show a diagram of
the gain reduction functions and text for the various knob settings.
THRESHOLD
The THRES knob sets the level at which the compressor is fully into
compression of whatever ratio is set. This can be set anywhere in the
range of -30.0 to + 10.0 dB
ATTACK
This control determines how quickly (between nominally 0.1mS
and 330mS) the compressor reacts to signals. Faster attack times result
in “tighter” and more obvious control; longer attack times lend them-
selves well to gentler automatic volume control.
Input LCD Display
Bargraph
Dynamics LCD Display
Settings