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Other Functions
63
13
Other
Functions
Emphasis
The
emphasis
function
can be used
to
de-emphasize
digital
audio recorded
on
the
DR4
before
it
is
output.
The
DR4
cannot
emphasize incoming
signals.
If
you
are
using analog
inputs
and
outputs
only,
you do
not
have
to
worry
about emphasis,
because
all
digital
devices
de-emphasize
their digital
audio before
outputting
it
via
their
analog
outputs.
The
only
situation
where
it
should
be
considered
is,
when
you
record
an emphasized
digital
signal to the
DR4
via
its
digital inputs.
In
this
case, the
emphasis
function
should
be
turned on, so
that
the
audio
is
de-emphasized
before being
output.
If
it
is
not,
you
will
notice
a
slight
frequency boost
above
3.5
kHz.
Emphasis
can be switched
on and
off
independently
for
channels
1/2
and
3/4.
Turning
on
Emphasis
1)
Press
the
SUB-MENU
key.
Its
indicator will
flash.
2)
Press
the
EMPHA
key.
Its
indicator will
light
up,
and
the current
emphasis
setting will
appear
on
the
display.
3)
Use
the fog
wheel
or
shuttle
control to select
an
option.
The
following
table
shows
the four options:
Option
Meaning
ISoFlHoF
1/2
off,
3/4
off
(SonBHoF
1/2
on, 3/4
off
1/2
off,
3/4
on
1/2
on, 3/4
on
4)
Press
the
STORE/ENT
key.
The new
emphasis
setting will
be
entered.
What
is
Emphasis?
Emphasis
is
a technique
that
was
used
to
improve
the
performance
of
the
first
generation of
A/D
and
D/A
converters:
a
bit like
noise reduction
for
digital
systems. Converters
have
improved
considerably over
the past
few
years,
so
emphasis
is
no
longer
used.
It
has
been
included
on
the
DR4
for situations
where emphasized
digital
audio
from
old
digital
master
tapes,
CDs,
etc., is
being
recorded.
Note:
If
a channel
contains both
emphasized
and
unemphasized
data,
it
cannot be played
correctly.
Version
1.0
5/93
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