23 PROTON User Manual
9.
Low Frequency Oscillators
The Proton has two independent LFOs. Owing to space considerations some controls are shared between the two, which is achieved by
use of the shift button.
9.1 Rate
Each LFO has its own rate control, with a range from 0.01 Hz at full CCW to 200 Hz at full CW.
9.2 Depth
Each LFO has its own depth control, which allows full amplitude when turned CW, with the amplitude reducing to zero as it is turned CCW.
100% depth
9.3 Shift
The shift button is used to select which LFO is affected by shared controls. When it is lit in red then LFO 1 is affected, white for LFO 2.
The shift control is also used to select which ASR envelope is affected by their shared buttons.
9.4 Waveform
Each LFO can have its own waveform selected from ramp, square, sawtooth, triangle and sine. These waveforms can also be set to blend
rather than being switched, either by using the SynthTribe app, or by the second panel function. Press 1-shot for two seconds and, once it
is flashing, use the para button to toggle between switched and blend for LFO 1. Press 1-shot again for two seconds to exit second panel.
For LFO 2 press the LFO retrig button for two seconds, then para. Press retrig again to exit second panel.
Ramp
Triangle
The waveform blending is a continuous process, so there are many possible blends of adjacent waveforms
Ramp / Square
50% depth
Square
Sine
Square / Sawtooth
0% depth
Sawtooth
Sawtooth / Triangle
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