ZynAddSubFX/LFO
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LFO controls (Low Frequency Oscillator) 
LFO controls, shape selection menu open 
An LFO is used to modulate parameters such as amplitudes, frequencies or filters.
Controls[edit | edit source]
The main LFO controls are:
- FREQ: frequency = LFO speed
- DEPTH: LFO amplitude
- START: start phase = position the LFO starts at
- DELAY: delay between the note start and the LFO start
- shape: envelope shape can be sine, triangle, square, ramp up, ramp down, exp1 down, exp2 down
Other controls:
- STR: stretch = controls how much the LFO frequency changes according to the note's frequency
- when negative, the LFO frequency is decreased on higher notes
- when zero, the LFO frequency is the same on all notes
- when positive, the LFO frequency is increased on higher notes
- A.R.: amplitude randomness
- F.R.: frequency randomness
- SYNC: continuous mode = when on the LFO won't be reset on each new note but will synchronize