Page 1
Intellijel DR. OCTATURE II
Illustrated supplement
by Demonam
Page 2
Index
01... 1-pole/6dB low-pass filter
02... 2-pole/12dB low-pass filter
03... 3-pole/18dB low-pass filter
04... 4-pole/24dB low-pass filter
05... Self-oscillation
06... Q - Quad mode
07... Filter sweep
08... Filter patch 1
09... Filter patch 2
10... Filter patch 3
11... 4 slopes filter
12... VC sine oscillator
13... Tracking filter
14... VC-Q filtering
15... Stereo filter
16... Signal crushing
17... Feedback loop
18... Self-cutoff modulation
19... Self-Q modulation
20... Bass drum
21... Ping !
22... Quadrature LFO
23... Quadrature LFO chart
24... Shepard tone
25... Automatic stereo panning
26... Variable slope random generator
27... With Intellijel Planar - Circular pattern patch
28... With Intellijel Planar - Circular pattern chart 1
29... With Intellijel Planar - Circular pattern chart 2
30... Space-time distortion (David G. Dixon)
Page 3
1-pole/6dB low-pass filter
self-oscillate past 1
set filter self-oscillation
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
1-pole filter out
(45° Q-sinewave)
set resonance
o'clock
mode
set Q response
for
signal IN
Q CV input
unipolar attenuator for
FM 1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
out
cutoff
out
freq.
increase
Q
1-pole filter out
(225° Q-sinewave)
freq.
cutoff
01
Page 4
2-pole/12dB low-pass filter
self-oscillate past 1
set filter self-oscillation
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
2-pole filter out
(90° Q-sinewave)
set resonance
o'clock
mode
set Q response
for
signal IN
Q CV input
unipolar attenuator for
FM 1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
out
cutoff
out
freq.
increase
Q
2-pole filter out
(270° Q-sinewave)
freq.
cutoff
02
Page 5
3-pole/18dB low-pass filter
set resonance
self-oscillate past 1
set filter self-oscillation
set Q response
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
3-pole filter out
(135° Q-sinewave)
o'clock
mode
for
signal IN
Q CV input
unipolar attenuator for
FM 1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
out
cutoff
out
freq.
increase
Q
3-pole filter out
(315° Q-sinewave)
freq.
cutoff
03
Page 6
4-pole/24dB low-pass filter
set resonance
self-oscillate past 1
set filter self-oscillation
set Q response
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
4-pole filter out
(180° Q-sinewave)
o'clock
mode
for
signal IN
Q CV input
unipolar attenuator for
FM 1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
out
cutoff
out
freq.
increase
Q
4-pole filter out
(360° Q-sinewave)
freq.
cutoff
04
Page 7
Self-oscillation
make filter
self-oscillate
set filter self-oscillation
VCO/LFO mode
pitch CV
Put into self-oscillation, the DR.
OCTATURE becomes a stable, 1V/Oct
tracking LFO/VCO.
Sine VCO range : 17Hz to 22kHz (0.059s
to audiorate).
Sine LFO range : 0.017Hz to 300Hz (59s
to 0.003s).
set FINE sine VCO/LFO
frequency
set COARSE sine
VCO/LFO frequency
VCO/LFO sine
outputs
05
Page 8
Q - Quad mode
self-oscillate past 1
gain unipolar attenuator
signal to be
filtered
set resonance
o'clock
set QUAD mode
for
signal IN
In QUAD mode, the increase of Q doesn't
make decrease the signal IN level, as
usually in this type of filter.
Illustrated here with 4-pole out.
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
out
IN
t
4-pole filter out
(360° Q-sinewave)
moderate Q & signal IN
out
high Q : no signal IN drop
increase
Q
IN
t
06
Page 9
Filter sweep
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
unipolar attenuator for
sweep input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
out
trig/gate CV
sweep CV
CV out
time
sweep CV
signal to be filtered
SWEEP
out
MIDI/CV CONVERTER
07
Page 10
Filter patch 1
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
unipolar attenuator for
ADSR (1) input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
ADSR (2) input
CV out
VCO out
VCO
1V/oct. CV in
pitch CV
ADSR (1)(2) trig/gate CV
OUT
MIDI/CV CONVERTER
08
Page 11
Filter patch 2
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
trig/gate CV
VCO out
VCO
1V/oct. CV in
pitch CV
MIDI/CV CONVERTER
filter out
ADSR
CV in
VCA
OUT
09
Page 12
Filter patch 3
pitch CV
1V/oct. CV in
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
VCA out
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
VCO
VCA
CV in
ADSR
trig/gate CV
OUT
MIDI/CV CONVERTER
10
Page 13
4 slopes filter
self-oscillate past 1
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
set resonance
o'clock
set Q response
for
signal IN
Q CV input
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
24dB/oct. out
18dB/oct. out
12dB/oct. out
6dB/oct. out
11
Page 14
VC sine oscillator
make filter
self-oscillate
set in
VCO mode
pitch CV
Put into self-oscillation, the DR.
OCTATURE II becomes a stable, 1V/Oct
tracking VCO.
Sine VCO range : 17Hz to 22kHz (0.059s
to audiorate).
set FINE sine VCO
frequency
set COARSE sine VCO
frequency
out
time
VC sine oscillator
VCO sine
outputs
12
Page 15
Tracking filter
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
CV out
pitch CV
VCO out
VCO
1V/oct. CV in
pitch CV
OUT
MIDI/CV CONVERTER
13
Page 16
VC-Q filtering
self-oscillate past 1
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
set resonance
o'clock
set Q response
for
signal IN
Q CV input
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
Q CV
OUT
14
Page 17
Stereo filter
self-oscillate past 1
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
set resonance
o'clock
set Q response
for
signal IN
Q CV input
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
LEFT out
RIGHT out
15
Page 18
Signal crushing
set resonance
self-oscillate past 1
set Q response
gain unipolar attenuator
for signal IN
clip past 12 o'clock
signal to be
filtered
3-pole filter out
(135° Q-sinewave)
o'clock
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
out
signal to be filtered
out
time
increase
IN
gain
3-pole filter out
(315° Q-sinewave)
time
clipping signal
16
Page 19
Feedback loop
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
MIXER out
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
signal to be
filtered
MIXER
filter out
feedback
loop out
17
Page 20
Self-cutoff modulation
set resonance
self-oscillate past 1
o'clock
set Q response
gain unipolar attenuator
for
signal IN
signal to be
filtered
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
OUT
18
Page 21
Self-Q modulation
self-oscillate past 1
gain unipolar attenuator
unipolar attenuator for
signal to be
filtered
set resonance
o'clock
set Q response
for
signal IN
Q CV feedback
unipolar attenuator for
FM1 input
set FINE filter cutoff
frequency
set COARSE filter cutoff
frequency
bipolar attenuator for
FM 2 input
OUT
19
Page 22
Bass drum
make filter
self-oscillate
set Q response
unipolar attenuator for
BD CV input
set FINE bass drum tone
set COARSE bass drum
tone
out
trig/gate CV
BD CV
CV out
time
BD : Attack-Decay CV
MIDI/CV CONVERTER
BASS
DRUM out
20
Page 23
set just under filter self-
oscillation
set Q response
gain unipolar attenuator
for
signal IN
Ping !
set FINE ping frequency
set COARSE ping
frequency
out
short A/D
or trigger
time
Trigger or A/D
PING out
21
Page 24
Quadrature LFO
make filter
self-oscillate
set in
LFO mode
Put into self-oscillation, the DR.
OCTATURE II becomes a stable, 1V/Oct
tracking LFO, with 8 90°-shifted phase
outputs.
Sine LFO range : 0.017Hz to 300Hz (59s
to 0.003s).
set FINE sine LFO
frequency
set COARSE sine LFO
frequency
QUADRATURE LFO outs
0°
45°
90°
135°
180°
225°
270°
315°
360°
22
Page 25
Quadrature LFO chart
Sine LFO range : 0.017Hz to 300Hz (59s to 0.003s).
45°
45°
2-pole
90° out
90°
135°
270° out
90°
135°
180°
225°
270°
315°
360°
180°
225°
270°
315°
360°
0°
0°
1-pole
45° out
0°
45°
90°
135°
180°
225°
270°
315°
360°
0°
225° out
0°
45°
90°
135°
180°
225°
270°
315°
360°
0°
45°
90°
45°
90°
3-pole
135° out
135°
180°
315° out
135°
180°
4-pole
180° out
0°
45°
90°
135°
180°
225°
270°
315°
225°
270°
315°
360°
360°
360° out
225°
270°
315°
360°
0°
45°
90°
135°
180°
225°
270°
315°
360°
23
Page 26
Shepard tone
VCO 1
make filter
self-oscillate
set in
LFO mode
1V/oct.
CV in
In LFO mode, take 4 outs 45°apart and
feed CV pitch of 4 in-tune VCOs.
45°-135°-225°-315° outs illustrated here.
set FINE automatic
panning speed
set COARSE shepard
tone sequence speed
1V/oct.
VCO 2
CV in
VCO 3
1V/oct.
CV in
1V/oct.
CV in
VCO 4
24
Page 27
Automatic stereo panning
make filter
self-oscillate
set in
LFO mode
In LFO mode, take 2 outs 180° apart, first
to the left VCA CV and second to the
right VCA CV.
Illustrated here with 4 pole outs.
set FINE automatic
panning speed
set COARSE automatic
panning speed
CV in
VCA left
LEFT out
CV in
signal to be
panned
VCA right
RIGHT out
25
Page 28
set resonance
add sine to signal in
set random amplitude
Variable slope random generator
set FINE random range
set COARSE random
range
RANDOM
CV out
NOISE
trig/gate CV
S&H 1
filter in
signal
in
MIDI/CV CONVERTER
signal
in
S&H 2
trig/gate CV
RANDOM
CV out
26
Page 29
With Intellijel Planar - Circular pattern patch
make filter
self-oscillate
set in
LFO mode
Feed Planar CV X & CV Y with 90° phaseshifted LFO outs.
Illustration for 180° and 270° LFO outs.
set FINE rotational
speed
set COARSE rotational
speed
Y
A
D
B
X
C
180° LFO out
270° LFO out
PLANAR CV X
PLANAR CV Y
27
Page 30
With Intellijel Planar - Circular pattern chart 1
start
CV X
180°
CV Y
270°
Y
+45°
CV X
180°
CV Y
270°
Y
+90°
CV X
180°
CV Y
270°
Y
+135°
CV X
180°
CV Y
270°
Y
A
D
B
C
A
X
D
B
C
X
A
D
B
C
A
X
D
50% A + 50% B 100% B 50% B + 50% C 100% C
B
X
C
28
Page 31
With Intellijel Planar - Circular pattern chart 2
+180°
CV X
180°
CV Y
270°
Y
+225° +270° +315°
CV X
180°
CV Y
270°
Y
CV X
180°
CV Y
270°
Y
CV X
180°
CV Y
270°
Y
A
D
B
C
A
X
D
B
C
X
A
D
B
C
A
X
D
50% D + 50% C 100% D 50% D + 50% A 100% A
B
X
C
29
Page 32
Space-time distortion (David G. Dixon)
make filter
self-oscillate
set in
LFO mode
set COARSE rotational
speed
Take three 90° apart outputs. Patch 0° output to A
uFade IN. Patch 180° output to B uFade IN.
Dr. Octature II 90° to Planar CV X.
uFade MIX out to Planar CV Y.
uFADE MIX knob controls the rotational direction.
Dr. Octature II CUTOFF frequency controls the
rotational speed, for uFade MIX knob at CW or
CCW.
A slow sine wave at uFade CV in will make
rotation to slowly change from CW to CCW.
Taste it at audiorate.
XFADE knob controls
rotational direction
180° LFO out
uFADE A in
0° LFO out
PLANAR CV X
90° LFO out
uFADE B in
MIX out
PLANAR CV Y
30
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