PROGRAMMING BASICS
29Proteus operation manual Modulation Sources
MODULATION SOURCES
The Proteus uses three kinds of modulation sources.
■
KEYBOARD and VELOCITY MODULATION
Values which are generated at the start of a note and do not change during
the note.
Keyboard Key
- Which key is pressed.
Key Velocity
- How hard the key is pressed.
■
REALTIME MODULATION
Values which can be continuously changed during the entire duration of
the sound.
Pitch Wheel
- A synthesizer pitch bend wheel.
Miscellaneous Controllers (4)
- Any type of MIDI controller data.
Keyboard Pressure (mono aftertouch)
- Key pressure applied after the
key is initially pressed.
Polyphonic Key Pressure
- Pressure from a controller capable of
generating polyphonic pressure data.
Low Frequency Oscillators (2)
- Generate repeating waves.
Envelope Generators (2)
- Generate a programmable “contour” which
changes over time when a key is pressed.
■
FOOTSWITCH MODULATION
Changes a parameter when one of the three footswitches are pressed. The
footswitches can be programmed to switch: Sustain (pri/sec/both),
Alternate Volume Envelope (pri/sec/both), Alternate Volume Release
(pri/sec/both), or Cross-Switch between the primary and secondary
instruments.
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