Output Atten - Orban 424A Operating Manual

mixed
with other
program
material;
it
performs
this
task
significantly
more
smoothly
than the
Orban dedicated de-essers because
its
threshold does not follow
the average
input level.
It is
important
to critically
audition
any program
material processed
in this
way
to
be
sure that
the control action does
not
produce
unnatural
pumping
or
modulation
effects, since the
perceived reduction
of
high frequencies
is
essentially a
psychoacoustical
illusion.
(Strictly
speaking, the frequency response
is
always
"flat";
only the overall gain changes.)
Since the
DE-ESSER OPerate/DEFEAT
switch does not
introduce clicks or
discontinuities,
it is
quite practical
to
key the de-esser
in
and
out as
necessary to
deal
with
certain "difficult"
sections
in
the
program.
Adjusting the
OUTPUT ATTEN
Control
(rear
pmel)
In
many
cases the
424A
is
used
to
provide peak overload protection
for a
recording
or transmission device.
Particularly
when
the
OUTPUT
TRIM
control
is
used
in
conjunction with the
VCA
LEVEL
meter
to
produce
readings
around
OdB
(as
described above), the peak output
level of the
424A
will
be
relatively
constant. Therefore, best
match between
the
424A
and
such a protected device occurs
at
a gain
which
drives the
device up
to,
but no further than,
its
optimum
operating
level.
This gain
need be
adjusted only
once
for
a given device.
Adjustment
may
be effected either with the device's
own
input attenuator, or
with the 424A's
OUTPUT
ATTENuator
(located
on
the rear
panel).
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