Section 5 - The Vocoder
Vocoder Parameters
134
The
vocoder
algorithms
have
a particular set of user
programmable
parameters
associated
with
the
effect. The first
parameter
is the algorithm name:
VocoderLow
Vocoder Mid 1
Vocoder Mid
2
Vocoder High
The
parameters
available for the
vocoder
are:
Mix Range: 00
to
99
This
parameter
controls the mix
between
the
dry
signal
and
the
wet
signal.
Setting
this
parameter
to 00 will allow only the
unprocessed
signal
to
be
heard,
while
a
setting
of
99
will
eliminate
the
dry
signal completely,
with
only the
wet
(vocoded)
portion
remaining
.
We
recommend
high
settings for this
parameter
.
Volume Range: 00 to 99
This
parameter
adjusts the
output
volume. Setting this
parameter
to 00 will eliminate
the
signal,
and
will
produce
no
sound.
Speech Gain Ranges: -48 to +48
dB
This
parameter
adjusts the boost
or
cut
applied
to the
Input
1 (vox) source,
after
the
pre-
emphasis.
Higher
levels of pre-emphasis require
higher
speech
gains,
in
general.
Experiment
with
this level
until
it
sounds
right.
Vocoder Sibilance Level Ranges: 00 to 99
This
parameter
controls
the
level of
high
frequency sibilance
sounds
passed
to
the
output
. This
filter
will
add
all vox frequencies above apprOximately 3500
Hz
(see earlier
diagram)
directly to
the
synthesized
output.
In
general
higher
values offer
improved
articulation.
We
recommend
a
setting
of
approximately 20
on
one
unit
(A,
B,
C,
or
D),
or
a
setting
of 5
on
each
of
the
four
units.
Vocoder Response Time
Range: Slow, Normal or Fast
This
parameter
selects the rate
at
which
the carrier will track
the
vox signal. A fast
response
time
will
analyze
and
synthesize the signal quickly. A slow
response
time will
analyze
and
synthesize
the
signal
more
accurately. This
parameter
defaults
to
Normal.
Vocoder Pre-emphasis Range:
00
to 99
This
parameter
emphasizes
the
high
frequencies of
the
vox signal
(Input
1),
and
de-emphasizes
low
frequencies. A setting of
99
gives the
most
emphasis,
whereas
a setting
of
00 offers
no
emphasis.
ENSONIQ
DP/4
Musician's Manual
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