LinPlug Spectral - Manual (Page 94)

Appendix B: Modulation Matrix Sources
Three types of modulation source are available: two different unipolar and a
bipolar one:.
Modulation Source Types
Unipolar modulation sources increase the modulation destination's
value in a single direction (for example an envelope). Its range can
be described as 0 to 1, gradually changing.
Spectral also has some uncommon unipolar modulation sources: the
Aftertouch Sub and Mod Wheel Sub. Sub stands for the different
range these values can have: -1 to 0. Sometimes these different
ranges can be handy, when for example the Mod Wheel should
control the Amplitude of an oscillator:
Using “Mod Wheel” as modulation source it will only alter the volume
of the oscillator from what it is to twice that volume. Using Mod
Wheel Sub it will change the volume from silent to the volume set on
the user interface.
Bipolar modulation sources both increment and decrement the
modulations destination value (usually a good example is an LFO,
which periodically changes its value according to the chosen
waveform, for example a sine wave).
Overview of Modulation Source types