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4)
VCA
The
voltage
controlled
amplifier
(VCA)
controls the
amplitude (volume)
of
the
sound.
It
is
used
to
produce
volume
contours (volume changes over
time)
similar to
the
timbre
or
tone
color
contours produced by
the
VCF.
There
are
9VCAs
in
the Trident
Mk.II
synthe
section
,
one
per voice plus
one
overall
VCA
for
the
programmable
Attenuator.
O
ATTENUATOR
This controls
the overall
volume
of
a
given
program
over
a
20
dB
range
relative
to
the
other programs.
It
can
be
used
to
prevent
jarring
changes
in
volume
when
you
change programs
(e.g..
from
a flute
patch
to a
massive
orchestral patch).
It
can
also
be used
to preset
"lead"
and
"rhythm" volume
changes,
if
desired.
4)
VCA
(Spannungsgeregel-
ter
Verstarker)
Der
VCA
reguliert
Lautstarkenver-
anderungen.
O
ATTENUATOR
Bei
der Klangfarbenspeicherung
dient
diese
Funktion
zur Lautstarkenkontrolle
und
verhindert Lautsliirkenveriinderungen
beim Wechseln
der
Programme.
4)
Amplificateur
v.c.a.
(VCA)
Le
VCA
(amplilicateur
a
frequence
reglee
par
variation
de
tension) controle
les
changements de
volume.
O
ATTENUATOR
Sert a
ajuster
le
volume
des sons
a
mettre
en memoire.
Empeche
les
change-
ments de volume quand vous
passez
d'un
programme
a
I'autre.
•
-KMB
lOdB
WM
ATTENUATOB
^^^^^^^B m
5)
VCA
EG
The
Envelope Generators (EG)
are used
to create
contouring
effects,
in
combina-
tion
with
the
VCF.
VCA.
or
both.
Con-
touring
effects
allow the
sound
of a
note
to
change and
evolve
as
time
passes.
This
evolution
in
timbre
(tonal
quality)
can
take
anywhere
from
a small part
of
a
second
to thirty
seconds or more,
and
different
parts
of
the
contour
(attack,
decay,
etc.)
can
proceed
at a different
rate.
These
effects
are
extremely
im-
portant
in
producing
expressive
sounds
-
sounds
that
are
punchy,
gentle,
sassy,
funky,
orchestral,
futuristic,
or
just
about
anything
you
want.
A
contour
is
a
pattern
of
changes
that
5)
VCA
EG
Dieser
Hullkurvengenerator moduliert
VCA,
wodurch
Lautstarkeanderungen im
zeitlichen
Verlauf erzeugt werden.
5)
VCA
EG
Ce
generateur d'enveloppe
module
le
VCA
de
sorte
qu'il se
produit
un
change-
ment du volume
dans
le
temps.
begins
when
you
depress
a key.
It
attacks
up
to a certain
point
(the
attack peak),
then decays
down
to
a
sustain
level,
remains
at
that sustain
level
as
long
as
you
hold
the
key
down,
and
finally
releases to
when you
release the
key.
There
are
six
EGs
in
the Trident Mk.II,
one
per
voice,
so that
each
voice
may
be
independently
articulated.
The
VCF
EG
Depth
control allows the
amount
of
contouring
(enveloping) to
be
continuously
varied
and
either
normal
or
inverted
(reverse,
negative)
envelopes
to
be
used.
The
VCA
is
controlled
by
a
full
depth
non-inverted
(normal)
contour
from an independent
EG.
Controls
The
Attack,
Decay and
Release con-
trols
can
be
independently
adjusted over
a
range
of
about
1
milli-second
(1/1000
of
a
second)
to over
15
seconds.
All
controls are
fully
programmable.
A
Attack
(imc
AnhjIIZoil
Durco
d'attaaue
D
Decay
time
Abltling-Zen
Duree de
diminution
R
Release time
Ablaii-Zeit
Duree de coupure
S
Sustain
level
Dauerpegcl
Niveau de
sustain
Trigger
signal
I
Triggersignal
Signal
de decienchement
ON
EIN
ON
16
ADSR
type enevelope
signal.
two
"ADSR"-Hullkurvensigntl
Signal
d'enveloppe
de type
ADSR
11
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