Orban OPTIMOD-FM 8700, Operating Manual

Page: 222 / 390

3-52
OPERATION ORBAN MODEL 8700i
The overshoot compensator works at 256 kHz sample rate and is fully an-
ti-aliased.
Hard Clip Shape (Hard Clip Shape) allows you to change the knee of the in-
put/output gain curve of the bass clipper when
B
ASS
C
LIP
M
ODE
is set to H
ARD
. It al-
lows you to control the shape of the “knee”—the transition between no clipping
and flat-topping. “0” provides the hardest knee, where the transition between line-
ar operation and flat-topping occurs abruptly as the clipper’s input level is changed.
“10” is the softest knee, where the transition starts 6 dB below
B
ASS
C
LIP
T
HRESH
set-
ting and occurs gradually. The factory default setting is “7.6.” See Figure 3-6.
The M
ED
and S
OFT
bass clipper characteristics use sophisticated look-
ahead algorithms that produce lower distortion than H
ARD
mode, regard-
less of where the H
ARD
C
LIP
S
HAPE
control is set. However, operating in
H
ARD
mode with the H
ARD
C
LIP
S
HAPE
control set beyond “0” may produce
a tradeoff between punch and bass distortion that is more appropriate
for pop music requiring substantial bass punch to make its musical point.
In any event, the
H
ARD
C
LIP
S
HAPE
control adds a useful color to the 8700i’s
sound palette—one that is not duplicated by the existing M
ED
and S
OFT
bass clipper characteristics.
This control does nothing if the B
ASS
C
LIP
M
ODE
is set to M
ED
or S
OFT
.
Speech Bass Clip Threshold
(“S
PEECH
BCT
HR
”)
(See Bass Clip Mode on page 3-48.)
Figure 3-6: Bass Clipper Input/Output Transfer Curves as Bass Clip Shape Control is Var-
ied from 0.0 (Hard) to 10.0 (Soft)