10.6

Table Of Contents
111Logic Pro Instruments
Change the velocity curve with a ModMap
1. In Logic Pro, from the Name bar, click the File button and choose Initialize Preset from
the pop-up menu to reset all Alchemy parameters to default settings.
2. Click the Master Vol knob to show the modulation rack in the modulation section. Note
the two modulators loaded in the modulation rack: AHDSR 1 in the first slot, Velocity in
the second.
3. Choose ModMap 1 from the pop-up menu to the right of the Velocity slot in the
modulation rack.
This applies the default ModMap to Velocity modulation of Master Vol.
4. Play a few notes on your MIDI keyboard to confirm that the velocity response is
unchanged by the default ModMap.
5. Drag the middle of the ModMap line upward to create a convex curve.
6. Play a few more notes on your MIDI keyboard, and listen to the effect of the convex
velocity curve: notes you strike with medium force play louder than they did with the
default curve.
7. Drag the middle of the ModMap line downward until the segment curves in the opposite
direction, becoming concave.
8. Play a few more notes on your MIDI keyboard, and listen to the effect of the concave
velocity curve: notes you strike with medium force play softer than they did with the
default curve.
Use a ModMap to scale a single source level in a multi-source preset
This example covers a preset where two sources play at full level from the bottom of the
keyboard up through approximately C4. Above this point, source A remains at full strength
while source B gets softer as you play further up the keyboard.
1. In Logic Pro, from the Name bar, click the File button and choose Initialize Preset from
the pop-up menu to reset all Alchemy parameters to default settings.
2. Click the Global button to view all sources, then load one sample (or multi-sample) into
source A, and load a contrasting sample (or multi-sample) into source B.
By default, there is a 50% crossfade between these sources, so you should hear a
balanced mix of the two samples across the entire keyboard range.
3. Click the source B Vol knob to show the modulation rack in the modulation section.
4. In the first slot of the modulation rack, choose Note Property > KeyFollow.
The amplitude of source B is modulated according to MIDI note number, but this
modulation does not yet have the required shape. Currently, the lowest notes are
softest, notes in the middle of the keyboard are medium-loud, and notes at the top are
loudest.
You will now use a ModMap to reshape the response of source B Vol to modulation by
KeyFollow.
5. Choose ModMap 1 from the pop-up menu to the right of the source B slot in the
modulation rack.
This applies the default ModMap to KeyFollow modulation of source B Vol.