
Subtractor Synthesizer
116
External Modulation
Subtractor can receive common MIDI controller messages, and route these to
various parameters. The following MIDI messages can be received:
• Aftertouch (Channel Pressure)
• Expression Pedal
• Breath Control
If your MIDI keyboard is capable of sending Aftertouch messages, or if you have
access to an Expression Pedal or a Breath controller, you can use these to mod-
ulate parameters. The “Ext. Mod” selector switch sets which of these message-
types should be received.
These messages can then be assigned to control the following parameters:
|
Destination
|
Description
F. Freq This sets External modulation control of the Filter 1 Frequency
parameter. A positive value will increase the frequency with
higher external modulation values. Negative values invert this
relationship.
LFO 1 This sets External modulation control of the LFO 1 Amount pa-
rameter. A positive value will increase the LFO 1 amount with
higher external modulation values. Negative values invert this
relationship.
Amp This let’s you control the overall volume of the sound with exter-
nal modulation. If a positive value is set, the volume will increase
with higher external modulation values. A negative value inverts
this relationship.
FM This sets External modulation control of the FM Amount param-
eter. If a positive value is set, the FM amount will increase with
higher external modulation values. A negative value inverts this
relationship. Both oscillators must be activated for this to have
any effect.
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