Korg PS-3300 - ENVELOPE GENERATOR (GEG)

Be) enn ee ee Se |
@ENVELOPE GENERATOR (2822)
Fig. 10k, t2NE—7 Yo xa —2— (EG)
DAH
MTS
72
(2
VCFO
BM
ETAL
£5
Az, ARPA AL OTT.
AV. BASH OT — AF ATHET BE TEER
DEL ET
DRI, KMOY Yer AH— TILA YH
SH
LOMKN,
EGAN
TSMR
We
ty
Se
ee
ELT.
COhIAALHIL
ADS,
ME
HDT
FEM
TO
OM
Lista
#-€
MW
LAMM
ISAS
HSC
ETIAT.
COLIED
YAH
.
MULTIPLE
TRI-
GGER
(F#VF7N
+
bhYH—)
EMATOAT,
BC. COPIA EMITS HER
EGIL,
A
(7277),
D
(F474),
S
OF
AFAY).
R
(VIA)
LEST
EFFIADE
BOC KAME LIP LET.
EGD ARIZ, VCADAMOMUTD, 2k 9
an
WML,
HOTEL
THO
Mme
LTVCFOD
2
2
RO
ARM
(Fe)
6 lela
RS
EF
LET.
Ne,
BEAU
KR
LBATOST,
37
PS-3100,
3300054
AIS,
=
DARA
SE
MOR
(483)
NUDSLBASHS
DUTT.
TH,
MUBEND
IZ
RCD
A
—
LATE
LPB
Th.
HD
DOAMMI
ML,
HHI,
NEHA
OVCF,
VCA,
EG
#'#nFL
ET,
TOYA
Ezy
NO
-FOWRE
BML
T
WATS
I.
LOM
Ger
et4¥—TH
(FO
et
SOF,
MM
CMRERAY
hee
os
Fs
fla IX, Mi SOHN. FELCoTHS
=
bixO
I,
EGOMS.
2%
0
HeHOBPMAY
EBACE BS MAMIM I SOM GTH,
PS-33000
EM@UMEL
T.
KPRD
WMD
te
WG.
INGO
LMG
—-7—-THMHT
CID
we
A,0,S,R
TRIGGER
_—_———
@Envelope Generator (EG)
In figure 10, the watergate theory is ex-
tended to include the operation of the en-
velope generator.
When
you
play
a
key,
a
light
goes
on;
in
a
real
synthesizer,
this
light
corre
the
trigger
signal.
It’s
called
a trigger
signal
because
it triggers
the
beginning
and
end
of
EG
operation.
Usually the light (the trigger signal) stays
on for the full length of time the key is
depressed, but it can also just give a brief
flash when the key is first hit. This second
type of trigger signal is called a “multiple
trigger’
So the EG receives the trigger signal from
the keyboard and proceeds to control the
VCA in accordance with the attack, decay,
sustain, and release settings. The VCA, in
ra
————
GIDE
fig. 10 Watergate theory applied to envelope generato:
(zyn0-7- 2 4L—F—-NEH))
a:
turn, raises and lowers the volume of the
sound passing through it.
Meanwhile, back at watergate, the agent
(EG)
sees
the
light
(trigger)
go
on;
this
is
a
signal for him to pull the second watergate
(VCA) back and forth according to his
instructions (the attack, decay, sustain, and
release settings). When his big stick is tied
to the VCF and the VCA together, the
expand effect is produced.
In. constrast. to other synthesizers you
may have used, the Korg PS-3300 (and
PS-3100) has separate VCF's, VCA's, and
EG’s for every key (48 of them) on the
keyboard, so you can play any number of
keys, together or separetly, in a series or
overlapping, and each key will be provid-
ed with its own accurate envelope.
Understanding the relationship between
triggers and envelopes and sound will be a
big help when you get down to more com-
plex synthesis. This is because the envelope
of a sound (its volume change over time)
has a surprisingly large relationship with
our ability to distinguish sounds and their
sources in everyday life. Since the EM con-
trols the envelope, work with its controls
until you feel confident in being able to
create the kind of envelope you have in
mind