10.6

72Logic Pro Instruments
Create a multisample with key splits and crossfades for adjacent zones
1. In Logic Pro, click File, then choose Initialize Preset from the Name bar to initialize
Alchemy to default settings.
2. Click the Advanced button, then click the source A button.
3. Click the Edit button to open the Main source editor.
4. Click the source select field, and choose Import Audio from the pop-up menu.
5. In the Import browser, select two or more samples representing the same instrument
played at different pitches, then click the Import button. Any import mode may be used.
Alchemy analyzes each sample to determine the root pitch (if not defined in the
filename) and sets the root key and key range for each sample zone accordingly.
6. Select a zone in the keymap editor, and drag its left or right edge so that it overlaps the
adjacent zone. The amount of overlap determines the range of the crossfade.
7. Select the leftmost of the two overlapping zones, and adjust the Right parameter in the
inspector zone section. If the overlap between the zones extends over four keys, set
this parameter to 4.
8. Select the rightmost of the two overlapping zones, and set the Left parameter in the
inspector zone section to the same value used in the previous step.
These two zones will now crossfade from one to the other when you play notes in the
overlapping region.
9. Import further samples, and repeat the previous three steps for each pair of zones you
want to crossfade.
Add and adjust loop markers for a zone
1. In Logic Pro, select the zone you want to loop by doing one of the following:
• Click a rectangle in the keymap editor.
• Choose the zone name from the pop-up menu in the zone section of the inspector.
2. Click the Loop Mode field in the zone section of the inspector, then choose Continuous,
Sustain, or Forward/Back.
Loop start and end markers appear on the waveform display, with the loop region
highlighted between them.
3. Click and hold the loop start marker handle until the waveform zooms in horizontally,
then drag left or right to find a suitable loop start point.
4. Click and hold the loop end marker handle until the waveform zooms in horizontally,
then drag left or right to find a suitable loop end point.
5. If required, enable loop crossfading with the Loop XFade button, then drag the
crossfade marker left to create a smooth loop.