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Editing Programs: Chapter 6
QuadraSynth Plus Piano Reference Manual 75
towards the Voice, Filter, or Amp boxes is a modulation source. The amount of
modulation, the time it takes place, and what controls (such as key velocity,
footpedals, aftertouch, mod wheel etc.) affect it are important parameters in
every Program. The QuadraSynth Plus provides the modulation flexibility of
patch cord-based instruments, but with the convenience and ease of use of digital
technology.
With some parameters, the modulation amount can be positive or negative. A
positive control signal increases the value of the parameter being controlled. A
negative control signal decreases the value of the parameter being controlled.
Setting modulation to 00 turns off the modulation source. Example: Keyboard
velocity can either make a sound brighter the harder you play, or make it less
bright, or have no effect on the filter at all. You have the freedom to set
modulation any way you want, even in ways that are the opposite of what they
would be on an acoustic instrument.
If a "baseline" setting exists for a parameter, modulation amounts add or subtract
values from the existing setting. However, modulation cannot force a value
beyond its maximum range. For example, if the amp is already at its minimum
value (lowest level), you could apply positive modulation to raise the level. But
applying negative modulation will not affect the amp level, since it's already at
its lowest value and cannot go any lower.
The QuadraSynth Plus lets you assign several modulation sources to one
modulation “target” parameter, which allows for interaction between two
modulation signals. Example: If the amp parameter responds to both the
envelope generator and a pedal, the parameter will follow the general envelope
shape but will also be influenced by the pedal.