10.6

424Logic Pro Instruments
Edit sample borders and loop points in the Audio File Editor
1. In Logic Pro, after the sample is opened in the Audio File Editor, drag the sample
(region) and loop borders graphically in the Region and S. Loop rows below the
waveform. The region length is represented as a red bar. The loop length is represented
by a yellow bar.
To accelerate your workflow, you can also use the Audio File Editor loop commands:
• Sample Loop → Selection: The loop area—defined by the loop start and end points—
is used to select a portion of the overall audio file.
• Selection → Sample Loop: The selected area is used to set the loop start and end
points.
2. Choose Edit > Write Sample Loop to Audio File.
The new loop values are written to the audio file header.
3. Save the sample after you complete your edits.
The new values written to the audio file header are used by Sampler.
Note: Edited samples may have values that are not accurately shown in the Zone pane.
Create instruments, zones, and groups
Sampler instruments overview
A sampler instrument is the file type that is loaded into Sampler. You load sampler
instruments with the plug-in Settings pop-up menu, or you can load a patch from the
Library.
When you load a sampler instrument, the associated audio files are automatically located
on the hard disk (or disks) and are loaded into computer RAM. You play and record the
loaded sampler instrument in the same way as any software instrument.
Sampler instruments can use keyboard mappings, articulation settings, and other options
to emulate natural elements of real instruments or to optimize them for live performances.
For example, some percussion instruments in the Logic Pro factory library contain special
performance patches that make it easy to play these instruments with a MIDI keyboard.
A sampler instrument tells Sampler which samples—audio files—to use and how to organize
them into zones and groups.
• A zone is a location into which a single sample—an audio file—can be loaded from hard
disk.
• Zones are assigned to groups, which provide parameters that you use to affect all zones
contained in the group. You can define as many groups as you like.
Sampler is compatible with the following audio file formats:AIFF, WAV, SDII, and CAF.
Sampler is also compatible with the SoundFont2, DLS, and Gigasampler sample formats.
See Add SoundFont2, DLS, and Gigasampler files.
Each audio file is loaded into Sampler as a separate sample and is automatically assigned
to a zone in the Zone and Mapping panes. You can edit and organize these zones into
sampler instruments. See Sampler Mapping and Zone pane overview.