ARP ODYSSEY Manual - Halaman 5
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INDIVIDUAL FUNCTIONS IN THE ODYSSEY
1. Set all the controls on your Odyssey as in
Figure B. There should be no sound coming
from your speakers when the controls are set
Figure C
8
like this, even if you press a key.
But the
assembly line is "wide open" and will pass any
signal from the audio mixer in unchanged form.
2. Opening the first slider under the audio
mixer will give you a steam -like hissing noise
from the
noise generator.
The noise generator
is a signal source, and has one control, located
in the upper
left
corner of the panel (Figure
C).
Moving this switch down will give you the
lower-pitched sound, like a distant waterfall,
of pink noise.
These raw sounds, suitably
modified, are useful in the production of wind,
thunder, surf, and motor or machine effects.
See Patch
10,
for some of these.
Close the first slider.
3. Open the second slider and you will hear a
rich buzzy tone from
voltage
controlled oscil-
lator 1
{VCO
1 ). The
pitch of this tone can
be changed manually by the
coarse
and
fine
tuning
sliders (Figure D), and by voltage con-
trol from the
keyboard
(try playing the key-
Page 6 ARP ODYSSEY
Signal sources
board
using
al
I
three p·ositions of
the
transpose
switch at the
left
of
the
control panel).
Other
control signals can affect
the frequency
of
VCO
1
through the two sliding attenuators
shown
in Figure
E.
Experiment
with the in
-
dicated controls.
An atten
uator
acts like a
valve, or faucet, to set the amount of a control
signal that passes through it
to
affect a voltage
controlled device.
An attenuator is closed
when it is all the way down, and open when it
is all the way
up,
VCO 1 produces
two
kinds of output signals;
you have been
listening
to the sawtooth signal
(so called because
it is
a pattern of voltage
changes which look, on a graph, like the teeth
of a saw).
It is the frequency with which this
pattern is repeated every second that deter-
mines what pitch you hear.
You can hear
the
puJse
signal by moving the middle switch
under
the
audio m ixer down ( Figure
F. ).
Figure D
AUDIO
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ICYBO
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OFF
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LFO
S/H
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Figure E
Figure
F
LFO
N'v
B
ADSR
"'-
VCO·
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MAX
-
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"
Figure B
TRANSPOSE
2 OCTAVES
UP
2 OCTAVES
DOWN
VOLTAGE
CONTROL LED
VOLT
AGE
CONTROLLED
OSCILLATOR
J"'Ln
OSCILLATOR
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HPF
GENERATOR
:
f
tr I JII
CONTROLLED
1
2
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1
t t I I l 1
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l I III
~
FM
~
J_
~
FM
-=_j
J_ J_
J_
J_ J_ J_ J_ J_ J_ J_
J_
ADSA
LFO
LFO
S/H
N'v
IV\.
~ ~
!' -
LFO
VCQ.1
NOISE
LFO
NOISE
VC0·1
1/00·2
KYBD
S1H
ADSR
AR
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REPEAT
JUl
The "assembly line"
ARP ODYSSEY Page 7