Operation Manual

SUBTRACTOR SYNTHESIZER
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LFO 2 Parameters
LFO 2 is polyphonic. This means that for every note you play, an independent LFO cy-
cle is generated, whereas LFO 1 always modulates the destination parameter using
the same “cycle”. This can be used to produce subtle cross-modulation effects, with
several LFO cycles that “beat” against each other. This also enables LFO 2 to pro-
duce modulation rates that vary across the keyboard (see the “Keyboard Tracking”
parameter below).
Destination
The available LFO 2 Destinations are as follows:
LFO 2 Delay
This parameter is used to set a delay between when a note is played and when the
LFO modulation “kicks in”. For example, if Osc 1 & 2 is selected as the destination pa-
rameter and Delay was set to a moderate value, the sound would start out unmodu-
lated, with the vibrato only setting in if you hold the note(s) long enough. Delayed LFO
modulation can be very useful, especially if you are playing musical instrument-like
sounds like violin or flute. Naturally it could also be used to control more extreme mod-
ulation effects and still retain the “playability” of the sound.
LFO 2 Keyboard Tracking
If LFO keyboard tracking is activated, the LFO rate will progressively increase the
higher up on the keyboard you play. Raising this value creates more drastic results.
✪ If the LFO is set to modulate the phase offset, LFO keyboard tracking can
produce good results. For example, synth string pads and other sounds
that use PWM (see page 110) can benefit from this.
Rate
The Rate knob controls the LFO’s frequency. Turn clockwise for a faster modulation
rate.
Amount
This parameter determines to what degree the selected parameter destination will be
affected by LFO 2. Raising this knob’s value creates more drastic results.
Play Parameters
This section deals with two things: Parameters that are affected by how you play, and
modulation that can be applied manually with standard MIDI keyboard controls.
These are:
• Velocity Control
• Pitch Bend and Modulation Wheel
• Legato
• Portamento
• Polyphony
Velocity Control
Velocity is used to control various parameters according to how hard or soft you play
notes on your keyboard. A common application of velocity is to make sounds brighter
and louder if you strike the key harder. Subtractor features very comprehensive veloc-
ity modulation capabilities. By using the knobs in this section, you can control how
much the various parameters will be affected by velocity. The velocity sensitivity
amount can be set to either positive or negative values, with the center position repre-
senting no velocity control.
|Destination |Description
Osc 1&2 Selecting this makes LFO 2 modulate the pitch (frequency) of Osc 1
and Osc 2.
Phase Selecting this makes the LFO 2 modulate the Phase Offset parame-
ter for both Osc 1 and 2. Note that Phase Offset Modulation (Sub-
traction or Multiplication) must be activated for this to have any effect
(see page 110).
Filter Freq 2 Selecting this makes the LFO 2 modulate the filter frequency for Fil-
ter 2.
Amp Selecting this makes the LFO 2 modulate the overall volume., to cre-
ate tremolo-effects.