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Editing Programs: Chapter 6
QuadraSynth Plus Piano Reference Manual 95
• Aftertouch Pressing on the keys after they’re down
generates this control signal. Aftertouch is also called channel
pressure, and represents an average of all keys being pressed.
This affects any keys that are held down. The harder you press
on the keys, the greater the degree of modulation.
• Polyphonic Pressure This is similar to aftertouch, but
each key can respond to individual pressure messages. Although
the QuadraSynth Plus keyboard does not generate poly
pressure, the sound generators can respond to poly pressure
signals entering via the MIDI In. Example: Assign poly pressure
to the sound’s amplitude in a string ensemble patch. You can
then increase the level of selected notes of a held chord to “pull”
some notes out of the chord.
• Pitch Wheel The two wheels to the left of the keyboard
are modulation sources (see below). The leftmost wheel, Pitch,
always controls the oscillator pitch but can be tied to other
parameters as well.
• Modulation Wheel The rightmost wheel, Modulation,
is traditionally assigned to LFO amount (level) so that rotating
the wheel away from you introduces vibrato. However it is also
well-suited to controlling timbre, vibrato speed, and many other
parameters.
• MIDI Volume MIDI can produce a variety of controller
messages (see the MIDI supplement in the back of this manual).
Of these, controller #7, which controls channel volume, is one of
the most frequently used. Example: Assign the filter cutoff as the
destination, and you can have the signal become less bright as it
becomes lower in volume.
• Sustain Pedal The sustain switch plugged into the
sustain pedal jack provides this modulation signal.
• Pedal 1 The pedal plugged into the Pedal 1 jack
provides this modulation signal. Typically, this may be mapped
to AENV Amp to act as a volume pedal.
• Pedal 2 The pedal plugged into the Pedal 2 jack
provides this modulation signal.
• Pitch LFO This is the same modulation signal provided
by the Pitch LFO. The Frequency LFO and Amplitude LFO can
also be selected as modulation sources.
• Pitch Envelope This is the same modulation signal
provided by the Pitch Envelope. The Frequency Envelope and
Amplitude Envelope can also be selected as modulation sources.