9

Using the EXS24 mkII Zone Loop Parameters
The EXS24 mkII can loop playback of either an entire sample or a portion of it, when
sustained MIDI notes are received.
• Loop On checkbox: Activate to enable looping and to allow access to the other Loop
parameters.
• Loop Start, Loop End fields: Define discrete loop start and end points, allowing you to
loop a portion of the audio file.
• Control-click either field to open a shortcut menu that allows access to the
Logic Express Sample Editor (or an external editor). This enables you to set the loop
start and end points graphically: Loop Start is represented by the LS marker and
Loop End by the LE marker. See Editing Samples in the EXS24 mkII Sample Editor.
• Tune field: Changes the tuning of the looped portion of the audio file in cent increments.
• Xfade (Crossfade) field: Determines the crossfade time between the end/start of a looped
sample. In a crossfaded loop, there is no “step” between the loop end and loop start
points. The higher the value, the longer the crossfade and the smoother the transition
between the loop end and start points. This is especially convenient with samples that
are hard to loop and that would normally produce clicks at the transition point—the
join in the loop.
• E. Pwr (Equal Power) checkbox: Activate to enable an exponential crossfade curve that
causes a volume boost of 3 dB in the middle of the crossfade range. This will fade
out/fade in the join between the loop end/start at an equal volume level.
Note: The ideal settings for the Xfade and E. Pwr parameters depend on the sample
material. A loop that cycles reasonably smoothly is the best starting point for a perfectly
crossfaded loop, but a crossfaded loop does not always sound better. Experiment with
both parameters to learn how, when, and where they work best.
213Chapter 9 EXS24 mkII