18
Arpeggiator
Phase: This setting adjusts the starting
phase of the LFO – i.e., the point in its
waveform to which the LFO springs when
it is resynchronized.
Tip: "Good" values for this setting depend
upon the selected waveform (see the list
above). Setting it to zero causes the LFO
to resync to a "zero-crossing" point, which
is not always the most interesting starting
point:
- For Saw Up and Saw Down waveforms,
a setting of 180° or -180° restarts the
waveform at one "end", so that the
modulation "ramps" up or down starting
from one extreme of its range.
- Similarly, Triangle waveforms are
resynchronized to positive and negative
"peaks” with phase settings of 90° and -
90°, respectively.
- By contrast, the Square waveform has
only two values (+Max and –Max).
Therefore, it doesn’t "ramp” at all, but
instead (as applied to note-on velocity)
produces simple loud/soft rhythmic
accenting – the Phase setting merely
affects the "positioning” of this rhythm.
- Finally, the Phase setting has no effect
upon the Random waveform, which
maintains a single constant (but random)
value over the duration of each LFO
waveform cycle.
Additional Page
LFO Settings
These settings control various parameters
of the built-in LFO, which can be used to
modulate output note-on velocity.
Note: Velocity must be set to Replace,
and LFO Mod (in the same group) must
be set higher than minimum, in order for
the controls in the LFO Settings group to
have any effect.
Waveform: Five different LFO waveforms
are available: Square, Sawtooth Up,
Sawtooth Down, Triangle and Random.
Note that the LFO is applied to velocity in
a negative direction. That is, higher (i.e.,
more positive) instantaneous LFO
waveform values correspond to
lower
output note-on velocities. Thus, Sawtooth
Up causes velocity to decrease gradually
with time and then jump back up to
maximum.