Ex-800 Synthesizer Modules And Parameters - Korg EX-800 Owner's Manual

3.4 EX-800 Synthesizer Modules and
Parameters
The basic sound sources of the EX-800 are the eight Digital­
ly Controlled Oscillators (DCOs), which offer precise frequency
tuning and stability througfrthe use of advanced integrated
digital technology.
The EX-800 DCOs o|erate on a principle of additive squara-
wave synthesis. Different waveforms are created by adding
together, in different proportions, up to four squarewave Har­
monics at octave intervals, from 16' to 27 (a four octave range.)
Each DCO then is separately articulated by its own 6-stage
Digital Envelope Generator, whiSh allows very complex and
interesting sounds to be created, especially when two DCOs
are combined per voice in DOUBLE Mode.
WAVE­
16
OCTAVE '
FORM
1 ~ l
1 1
• z <
1
» 1
H :
HIGH
o n
, ? K
c ' MID
:
S
0
LOW
n OFF
/
DC01
PARAMETER NAMES AND FUNCTIONS
I i OCTAVE
Determines the basic pitch range over a three octave
range (High, Middle, Low). By choosing different com­
binations of the Octave and Harmonics parameters,
you can select a basic pitch range from 1 ' (highest)
to 3 2 ' (lowest).
OCTAVE
HIGH
MID
LOW
WAVEFORM
The Waveform parameter works together with the
16' - 2 ' Harmonics parameters (see below) to deter­
mine the basic tonal quality (timbre) of the oscillator.
The Harmonics parameters turn each squarewave
Harmonic ON and OFF. The Waveform parameter
LEVEL
4 '
8 ' 2 '
i r i r
1 1 t 1 ~ l
i j
* > -<
l (
1
: !
_ i i
~t i
ON I ON
o n
A
l ~ i T
0 0
OFF OFF OFF
VALUE
3
2
1
selects the actual LEVELS of the individual square-
wave Harmonics which are added together to create
the final waveform.
The EX-800 provides a choice of two waveforms (har­
monic levels): Squarewave ( n
Sawtooth ( [ \ ) at Value
• With a Waveform Value of
Harmonics (that are turned ON) are added together
at equal volume:
L E V E L *
& f \ „ r i c a n be
tuned ON or OFF
at each feet.
■ Step Wave
1
• With a Waveform Value of .?, each Harmonic (that
is turned ON) is combined with a different relative
volume (16' is loudest, 2 ' is softest):
WAVE FORM
) at Value
.
!, all of the squarewave
„
—
|" |
2'
I6 8 ' 4 16'
N F E E T
4 \
2 \ O N
Step Wave
VALUE
N
n
, and
8 4 2
n
2
1
13