NORD MODULAR G2 V1.1
5. Basic functions: Modulation
Page 33
considerably less than 0.5 (leaving less than half of the level of the incoming signal to modulate). A setting
of 0 shuts off the modulation completely. The pitch mod-input on the various oscillators and the ‘dB’
attenuation alternative in the Mixer modules are examples of Type II attenuation.
[T
[T
[T
[T
Y
Y
Y
YP
P
P
PE
E
E
E
III]
III]
III]
III]
The mod-amount knob affects the incoming signal in an attenuated and amplified, linear fashion. A set-
ting of 200% (maximum) amplifies the incoming signal to twice its original level, a setting of 50 leaves
the incoming signal unaffected and a setting of 25 attenuates the incoming signal by a factor of 0.5 (leav-
ing half of the level of the incoming signal to modulate). A setting of 0 shuts off the modulation com-
pletely. The frequency mod-input on the various filters are the sole examples of Type III attenuation.
M
M
M
M
O
O
O
OD
D
D
DU
U
U
UL
L
L
LA
A
A
AT
T
T
TIIIIO
O
O
ON
N
N
N
E
E
E
EX
X
X
XA
A
A
AM
M
M
MP
P
P
PL
L
L
LE
E
E
ES
S
S
S
P
P
P
P
U
U
U
UL
L
L
LS
S
S
SE
E
E
E
W
W
W
WIIIID
D
D
DT
T
T
TH
H
H
H
M
M
M
MO
O
O
OD
D
D
DU
U
U
UL
L
L
LA
A
A
AT
T
T
TIIIIO
O
O
ON
N
N
N
Let us use the pulse width on the OscDual module as an example
in two scenarios:
1. If you want to modulate the pulse width from the minimum value (1%) to the maximum value
(99%) with a positive envelope (that produces a control signal with a peak to peak level swing from 0
units to +64 units), set the initial pulse width (PW) to 50% and the mod-amount to 100.
2. If you want to modulate the pulse width from the minimum value (1%) to the maximum value
(99%) with an LFO (that produces a bipolar control signal with a peak to peak level swing from –64
units to +64 units), set the initial pulse width (PW) to 75% and the mod-amount to 50.
Increasing the setting of the mod-amount can force the pulse-width beyond the limits (1% – 99%).
This will result in the signal being “mirrored”.
Note the difference between the total amount of modulation from an envelope (unipolar, 64 units) and
from an LFO (bipolar, -64 to + 64 units = 128 units). This explains why the first scenario has the mod-
amount set to 100, and the second scenario set to 50 for maximum modulation.
P
P
P
P
IIIIT
T
T
TC
C
C
CH
H
H
H
M
M
M
MO
O
O
OD
D
D
DU
U
U
UL
L
L
LA
A
A
AT
T
T
TIIIIO
O
O
ON
N
N
N
A signal routed to a Pitch input on a module affects the pitch by
modulating it linearly in the note scale (see figure to the right be-
low)
The figure to the right shows an A4
note being pitch modulated by a sym-
metric bipolar signal.
amplitude
pitch
A4, 440 Hz
A5, 880 Hz
A3, 220 Hz
