MPE Control: remap modeled intensity and per-note pitch
In these lessons, Pressure means a mapping of note velocity, and Note PB shapes a stored per-note pitch slide. This is a controlled demonstration of TuttiDAW’s expression model, not a live pressure-sensitive hardware performance.
Give each expression lane one job
The original eight-note phrase rises in velocity from 28 to 105. Every second note has a +2-semitone slide, and the clip also contains a separate pitch-bend gesture. A real Synth follows MPE Control in the chain. Keeping those three ingredients distinct lets you hear whether a change affects note intensity, the glide within a note, or something the effect is not changing.
Do not infer hardware aftertouch or a timbre axis from the name. The Press page remaps the model’s note velocity; Note PB remaps its slide amount. Slide provides an on/off control for that per-note slide, not a separate filter-colour gesture. There is no MIDI hardware connection or import step needed for these examples.
Reverse the emphasis, not the notes
The first example has Press On enabled with Min 127, Max 0, X 64, Y 64 and S Shape off. This makes a descending mapping. The input velocity 28 becomes about 99.44, while 105 becomes about 22.35. Listen for the early quiet notes taking the lead and the final accents receding. The pitches and note timing do not reverse.
Reverse the intensity ladder while keeping its pitch gestures
Interactive MIDI example
Bypass MPE Control to compare with the original emphasis, leaving Synth active. Then enable the effect and turn Press On off. The latter passes the original velocities through while leaving pitch controls available. If the inversion is too emphatic, try Min 100, Max 40 and the same midpoint for a narrower contrast.
The curve describes values, not elapsed time
Min and Max are the output endpoints. X is the input value at the midpoint, and Y is the output assigned there. Moving Y changes the response around that part of the input range. With a descending curve, raising Y favours more of the middle-strength notes; compare 50 and 80 and watch their actual output values.
S Shape eases each half of the value mapping instead of joining its points with straight segments. It is not a smoothing time, attack envelope or automatic humanization. Back the curve toward a straight, narrower mapping if nearby input strengths become too hard to distinguish. Judge the phrase rather than preferring a visually dramatic curve.
Keep a gesture but reduce its reach
In the second example Press On is off, so velocities remain unchanged. Select Note PB: Pitch On is enabled, Min is 48, Max 79, X 64, Y 64 and S Shape is off. The four stored +2-semitone slides become approximately +0.62 semitones. The four notes without a stored slide do not acquire one just because the curve changed.
Reduce per-note slides without removing the clip bend
Interactive MIDI example
These 0–127 curve values are not semitone amounts or keyboard pitches. Internally the slide is mapped from a bipolar ±24-semitone domain through the curve and back. Listen for a less conspicuous glide at the same note locations. If that removes the intended expression, move Min toward 0 and Max toward 127 with the midpoint unchanged, approaching the straight-through mapping.
Why Slide Off does not remove every bend
Open Slide and turn Slide On off. The per-note slide values are removed; turning Pitch On off also removes them in this model. The independent clip bend still plays. Use the before/after note details to confirm missing slides rather than assuming any remaining pitch movement means the switch failed.
Reset restores the entire authored chain, not just the currently visible curve page. Keep the instrument settings unchanged while comparing mappings, since a different velocity or pitch response there changes what these instructions sound like. The goal is a useful relationship between gestures and sound, not a claim that a note-data model reproduces every dimension of a physical MPE controller.