10.6

65Logic Pro Instruments
Zones in Group 2 will now fade in when the note is released, creating a crossfade
between Groups 1 and 2 at note-off. Higher values result in slower fades. Fading in the
release group may be unnecessary if your release samples already have a natural fade
in at the start, however, or undesirable if a percussive transient is required at note-off.
Try to set Fade values for Group 1 and 2 to an identical small value to create a sudden
but click-free crossfade at the end of each note.
Create random round robin variations
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. Switch to advanced view, and set the Release time for AHDSR1 to a suitable length for
your release samples.
3. Switch to one of the sources with the A/B/C/D buttons, then click the Edit button to
open the Main edit window.
4. Click the select field, and choose Import Audio.
5. Select a sample (or multiple samples) representing the main sustain portion of your
sound, and import using any of the available import modes.
Alchemy analyzes each sample to determine the root pitch (if not defined in the
filename), set the root key, key range, and velocity range for each sample zone such
that they span the entire keyboard and the entire dynamic range, and add all zones to a
group named Group 1.
6. Click the Rule field, and change it from Always to Random Round Robin.
7. Click the “+” symbol at the top of the Group section, and choose Import.
8. Select a sample (or multiple samples) representing the second of your round robin
variations, and import (the import mode is automatically set to match the existing
group).
Alchemy will again analyze each sample and add all zones to a group named Group 2.
9. Click the Rule field below Group 2, and change it from Always to Random Round Robin.
Any notes you play will now randomly trigger either group 1 or group 2, but not both
together. Note that if you play a chord, each individual note is randomly assigned to one
of those groups.
10. Repeat steps 7 to 9 as needed to configure a group for each further variation you
require.
Assign the source Keysw knob to switch between groups
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. Switch to advanced view, and set the Release time for AHDSR1 to a suitable length for
your release samples.
3. Switch to one of the sources with the A/B/C/D buttons, then click the Edit button to
open the Main edit window.
4. Click the select field, and choose Import Audio.
5. Select a sample (or multiple samples) representing the main sustain portion of your
sound, and import using any of the available import modes.