this is a pitch LFO technique that ought to get you going.
change up your waveforms assing lfo -> cutoff for different flavors
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LFO to osc pitch +127
LFO symmetry -127 (or whatever value takes you to the bottom of the lfo cycle)
LFO speed set to about 12 (or a really low value)
LFO keytrigger (or lfo start) to medium value
Hold note
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