Roland SP-404MK Reference Manual page 181

Appendix MFX List
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Slicer
This slices the sound up into small pieces, creating the impression that a backing phrase is being played.
This slices up the sound at certain intervals into 16 parts (16 steps), breaking the sound into a rhythm that follows the
sequence pattern (a pattern used for slicing up the sound). This is effective when used with sustaining sounds.
Parameter Value
PATTERN 1‒32
SPEED 0‒100 (when the SYNC parameter
is OFF)
2/1 to 1/64T (bars; when the SYNC
parameter is ON)
DEPTH 0‒100
SHUFFLE 0‒100
MODE Sets how the volume changes when the next step sounds.
LEGATO
SLASH
SYNC OFF, ON
Explanation
Sets the sequence pattern.
Sets the period over which the sequence pattern repeats.
Sets the slicing depth. Larger settings make the slicing
effect more prominent.
Larger settings delay the timing of even-numbered steps (2,
4...).
The volume is not changed between steps.
The volume is reset to zero before the next step sounds (at
the boundary between steps).
When this is ON, the effect sound synchronizes with the
tempo.