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Chapter 9 EXS24 mkII 206
EXS24 mkII zone loop parameters
EXS24 mkII can loop playback of either an entire sample or a portion of it, when sustained MIDI
notes are received.
Zone loop parameters
•
Loop On checkbox: Click to enable looping and to allow access to the other Loop parameters.
•
Loop Start, Loop End elds: Dene discrete loop start and end points, allowing you to loop a
portion of the audio le.
Control-click either eld to open a shortcut menu that allows access to the Logic Pro Audio
File 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
Edit samples in the Logic Pro Audio File Editor on page 209.
•
Tune eld: Changes the tuning of the looped portion of the audio le in cent increments.
•
Xfade (Crossfade) eld: 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: Click to enable an exponential crossfade curve that causes a
volume boost of 3 dB in the middle of the crossfade range. This fades out/fades in the join
between the loop end and start points 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.