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LFO Sync Phase can be used to set the reset the phase at the start of a section of music.
Alternatively, it can be used repeatedly to carefully adjust the rhythm.
If the LFO is set to restart on each note (using the LFO sync parameter), then LFO Sync Phase
may be unnecessary, because the LFO restarts its cycle at the start of each note anyway.
LFO SYNC SUSTAIN
A piece of music having a variable tempo may require an LFO to synchronise to the midi clock
throughout its duration. However, it may be useful to be able to sustain a previously
synchronised LFO rate during a section having a different tempo.
This is achieved using Midi continuous controller 90 (undefined in the Midi Standard). This
continuous controller is called LFO Sync Sustain. If the data value of LFO Sync Sustain is
greater than 63, then midi synchronised LFO rates are sustained at their current values
regardless of subsequent changes in the midi clock rate.
LFO Sync Sustain is released by sending an LFO Sync Sustain event with a data value of 63 or
less. After this, midi synchronised LFOs return to tracking the midi clock rate as usual.
Name
Description
Off
LFO is free running
Note
Restart at the beginning of each note*
LFOx Anti
Lock LFO in antiphase with LFOx**
LFOx Quad
Lock LFO in quadrature with LFOx**
LFOx S&H
Sample and hold LFO when LFOx restarts its cycle
LFOx NSH
Note sample and hold: Restart LFO at the beginning
of each note, then sample and hold LFO when LFOx
restarts its cycle*
Note S&H
Sample and hold LFO at the beginning of each note
Table 15. LFO internal synchronisations
* LFO5 and LFO6 don't support this synchronisation
** LFO5 and LFO6 cannot phase lock to LFO1-4
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