Korg Mono/Poly - EG Depth; Keyboard Track; VCF EG Controls

tracking is an extremely useful function
*\ which if*
VCF is made
to
"follow'*
ihe note as
ii
is
played on the keyboard,
Thd
produces
more evsn and realistic
sounds by
insuring that ihe tonal quality
(timbrel of
a
given sound remains con-
sistent
over
the full
5
octave range
f
100%
tracking). Without keyboard
tracking,
a
given sound played at
"C"
would sound
bright and bu/rv at the
lowest
"C'\
and
muted c even
non-existent
at the
highest
X*\
The
Mono/Poly
p
s
VCF always tracks
the highest note ptoyed. to
avoid muting
notes above
the cutoff frequency.
Trie Mono/Poly also allows deliberate
over- or
under-tracking. This produces
smooth
and
controlled tone quality
changes
as you
move
up
and down the
keyboard, for special effects, or to
simu-
late instruments with changing timbres
(e.g>.
many orchestral and keyboard m*
struments) At settings of approximately
*7",
the
VCF follows the note on a 1 for
1
basis
O00/U
Below 7. the VCF In
effect "legs behind" the note played: this
causes
notes
to
sound brighter
as
you go
down
»n
pitch, and rounder or mellower
as you ascend. Conversely, at settings
above 7. the VCF cutoff increases
"faster" than
does the keyboard pitch,
which
Causes notes to
sound brighter
as
you go up
in pitch and derker
as you go
down.
The
further
the
control is from
7
t
the more pronounced this tona' change
will
be.
When the VCF is self-oscillated and
used as an
auxiliary sound-source,
the
KBD
TRACK control allows
you to
"play" the VCF as II it were a regular
oscillator Additional I
y. special
scales
known
as
Mitrotonal
(e.g..
"quarter
tone"! and MacroionaJ can
be
created
at
settings less than, or
greater than
7.
respectively
Variable
keyboard
tracking
is ex*
tremety useful
m
producing realistic
in-
strumental
sounds, and In helping to
make any
particular
program
sound
good
over
a full five octave range.
3) EQ
Hier kann eingeslellt warden, wie die
Beschneid frequent durch den
VCF-
HulI kurvengenerat or beei n f I u&t
werden
soil BeiEinstellungenrechlivonPositrt>n
erhbht sic* die Beschneidfrequenr mit
anstetgender HOIIk urvengenerator
Steuer-
spannung (dor
fCtang
wird heller) Bel
E instellungen
links von der O-Position
verandert sich die
Baschneidfreojuem
umgekehrt proportional zur
Steuerspan-
nung lein aehr ungewohnlicher E Ifefct)
41
KBO TRACK
D>eser RegJer
ermoglichtdieVarlkerung
der
Beschneidfrequen/
m
Abhangigke<t
von der
Tonftohe der angeschlagenen
Taste Dieser
Effekt erleichtert dte
Erwugung r,B deft
Klanges von Geige
und Sexophon. bei
denen sich die KUjng/
farbe mil
/unahmender Tonrohe immer
mohr aumerit
AH
Interessantes
Experi-
ment kann man /.8
Filter Eigenoszil*
letion an die
TonhGbe oer angeschlagwvn
r
asten koppeta. Da/u
die vaer VCO
LEVEL-Regler auf steJIen, die
Be
sohneidfrequen/ (CUTOFF} auf
5
f
RESO
NANCE
auf 10 und
die Keyboard^
Synchronisierung
(KBO
TRACK) auf
etwa6oder7
51 VCF EG
Oer Hullkurvengenerator lEngliseh
"Envelope generator"
-
EG) des VCF
dlent
?ur
/eilebiaufbezooenen
Anderung
der
Bescnneldfrequenz.
Auch zur
VCO
und
I mputswellen<Mooulation einsetrbar
Naheres unter VCA
EG.
wo auch die
Bedienung der Regler beschrieben ist.
3) EG
Controte la
boon
dont
le
VCF EG
tgenierateur
d
f
envelope©} affecte
la
treV
Quence
de
coupure*
Toue tea
rdglages
au-
03S5US de (rotation dans le sens horaire
A
partir
de
la position centrale} font
aug-
menter la frequence de coupure (la
tonalit* est plus brlllante)
au
fur et
A
meaure que la tension de commande
du
genorateur
EG
augmente. Cependant.
s)
ke bouton est
regh*
sur une position
inffr
rieure a 0, la
frequence
de coupure
decent
inveraemem proportionneile
a
la
some EG CV (ce qui
permet
d*obtemr un
eHet frenohement IrvhabitueO-
4t
KBO TRACK
Co rcglage est utilise pour f aire var ier
ia frequence da coupure en
fonction
de
la duree pendant faquelte la loucne
acttonnee du clavier est jouee Ceci est
ires
utile
pour
produce des
tonorites
riches
comparabtes
A
celles d*un vioson
ou
dun
saxophone
dont la
timbre
dement
plus
ciair
au fur ei a
mesure
que des notes
eievees sont
jouee*
Une
experience
inteYessante consiste a
provoquer
une auto
oscillation
du
filtre
VCF qui suit la hauteur du son du
devter
an plagant les quatre
poieniiometres
de
niveau dee osciltateurs VCO sur 0. A
rogter
Ia
frequence
de
coupure sur
5.
la rtonan-
oe sur 10 et * placer
le rtgiage
KBO
TRACK aux
environs
de 6
ou 7
5) VCF EG
Ce generoteur d
F
enve4oppe est utilise
pour covoquer des
rJttngernents
de
la
frequence
de coupure
dans le temps. II
peut
servn auasi pour la modulation
VCO et
PW
Se
reporter
a
la description
du
generateur
VCA EG
pour avoir pfcjs
amptes
de
details
A oe
sujet
Le
fonction-
nement
est
idennque.
B, VCF Envelope Generator
The
Voltage
Controlled Filter's
enve-
lope
generator controls
the
filter contour-
ing
effect, Tnis
produces the dynamic
changes
in timbre over time
which
is one
of the most
important
abilities
of
a
synthesiser. Variable amounts
of
both
normal and invertal (reverse)
enve+optng
is obtained by use of the EG Intensity
Control
as
described above In addition,
the VCF
EG
may also be used to sweep
the "slave" VCOs in the Effects section,
and to vary the VCO*" Pulse
Width for
Pube Width Modulation.
The
selecton
and intensity of those effects are con-
trolled withfn the Effects and Pulse Width
Modulation Sections respectively. (See
appropriate sections belowJ
Attack; Varies the rise time of the
EG
contour from zero
to
the attack oeafc
from t millisecond
to
approximately 10
seconds
Decay: Varies the initial fell time of
the EG from the attack peak
to
the
Sustain Level, over
a
range of approxi-
mately 1 miPlisection to
20
seconds.
Sustain Level:
Var*s the Sustain
Level
of
the EG
from
to
100%. of the
attack peak.
Release:
Varies the final fall time of
the
EG
following
me
release
of
all
keys,
from approximately f millisecond
to
about 20 seconds