VCO BANK
The
Voltage
Controlled
Oscillator
(VCO)
is
the
primary
source of
sound
for
a
synthesiser,
and
determines the
pitch
and
bas*c tonal quality, or timbre,
of
all
sounds produced.
The Korg Mono/Poty
is
comprised
of four separate
VCOs.
«ach
with independent Octave.
Waveform
and
Level
controls,
for
fattest
sounds and
maximum
flflKib'litv
A
white Noise
source with
its
own
Level
Control
»s
also
induded
in
this
section
Having
separate
controls per
VCO
olfer* the following
advantages:
•
In
the
Monophomt
lUntson)
mode,
allows
mixing
of different
waveforms
and/or octaves
in
the
same
note,
for
richer,
fuller
sounds,
•
In
ihe
Poly,
Unison/Share and
Chord
Memory
modes,
the
use*
may
struc-
ture
highly
complex
polyphonic
chords with
different
octave and/or
timbre
selection for
each
note.
or.
he
may
create
four
note
homogeneous
sounds
(all
notes
with
the
same
tim*
tart).
• VCOs
can be
arpeggiated
or
even
played
sequentially
(<**,
a different
VCO
sound
for
each
new
Key
depres-
sion),
by
using
the MP-4's
Arpepolator.
This can
produce
interesting
mythrnic/
random-type
effects especially
when
different
octave,
waveform
and
/or
level
setting*
per
VCO
are used.
1.
Tuning
Controls
Overall tuning
among
the four
VCOs
Is
determined
by
the different
Tuning con
trols,
as follows
Trampott:
Transposes the pitches of
all
four
VCOs
up
or
down
one
octave
(The
rear
panel
CV OUT
jack
is
also
affected
by
this switch).
Miner
Tune
(in
VCO
J
section):
Varies the pitch of
all
four
VCOs
simul*
taneously over
a
range
of ±
50
cents, for
tuning the
Mono/Poly
to
Other
instru-
ItWl
is,
etc
Individual
Tune
IVCOs
2,
3.
A)
Varies the tuning of the
individual
VCOs
relative
to
VCO
1
by
i
SO
cents.
Theea
controls are
normally used
to
initially
tune
all
four
oscillators
to unity
pitch;
once
tuned, these controls should not
require
furl
her adjust
men
L
Detune:
Single control
automatically
"spreads"
ihe tuning of
the
A
VCOs
m
opposite
directions, for creating
an
ex-
tremely
fat
"animated"
lead
sound
in
the
Unison
Mode
Oscillators
are
conve-
niently
returned
to perfect intonation
by
turning the
Detune
control
back
to
"0"
for
Polyphonic
playing,
without
con
stentlv
having to
adjust
separate
VCO
Tune
controls.
0*e
VCOs
Ispermungsgeregelte
Owil-
LatorenJ
bestimmen
Tonhohe und
den
Grundklang Oas Mono/Pory
ist
mtt
vier
VCO-Modulen
beatucki
Es
ist
deher
in
der Lags,
boi
rTuynophonem
fietrieb
sehr
complex
strukturlerte
Klangesu
erjeugen
Mil
den
KEY
ASSIGN MOOETasten
xann
such
auf
poryphonen
Betrieb
umgeschaltet werden.
Lee
oscillateurs
a>
frequence
rAgloe oar
variation
de
tension
(VCO)
determinant
L
hauteur
du
son
et
le
timbre
fondamentai
Le
synth^tiseur
Mono/Poty
est
equlpes
de
ojuatre
oscillateurs
VCO
modutoires
et
ceci
lui
confer*
la
possibility
de
produtre
des sons en couches complexes
des peue
inhebrtuels torsque
I*
instrument
est
utltbtf*
en
synthenseur
monophonique.
Lea
boutons
de
mode
d'sffectation
vou*
permanent
aussi
de
procecler
a
una
commutation de
Vinstrument
en
*ynth#V
nseur
poiyphoniQue
4
votes
1
1
TUNE
Fur
separate
Feinstirnmung der
VCOs
2.
3
und 4
0*
Tonhohe
kann
um
i50
Cents
IHundenstet
eines
Ha*toru)
abgewandelt werden.
Den
Akkordspeicher
(CHORD
MEMORY)
vervvenden.
wenn
starkere
Tonhohen
Abvmchungen
en
f
order!
»ch
sind
2)
WAVEFORM
Es
kann
zwischen
vier
VCO-Wellen
former
gewahlt werden.
A
(Dreieckweliei.
N
I5ageiahnwelie)
.
Impulsweile
und
mooXjtierbarer
impulsweile
1)
TUNE
Regiages
J
'accord fin
lnd6pendant dee
oatilieieurs
VCO
2.
3
et
4,
La hauteur
du
son peut
etre
rode
dans
una marge de
tfjQ
cents.
L'emploi
de
la
rnftrnoire
d
'accord
permet
d'ajouter
una
variation
plus
maroi>£>
de
la
hauteur
du
son
quand
celtooeetdeerrea.
21
WAVEFORM
Ce
reglage
vous
offre
un
choix dea
formes d'ondes des
quatre
oscillateurs
A
(onde
trtangutairel.
N(Onde
en
dents
de
soe),
modulation
par impulsions
de
duree
variable
ou
PWM
et
impulsiona
de durte rotable
ou
W.
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