The LFO Page
We have already discussed oscillators on the Synth Page. The waveforms created by those oscillators are comparatively high frequency waveforms meaning they vibrate very quickly. This is what lifts them to within the human hearing range so that we can hear them. There is another type of oscillator commonly used in synthesizers though: the much slower Low Frequency Oscillator or LFO.
Because of its low frequency, an LFO is out of human hearing range and is used to modulate the levels of other parameters (controls) within the synth. Creatively applying LFO modulation within Evolution One can really open up your sound design possibilities, allowing you to create sounds which fluctuate, move and evolve over time.
Evolution One provides two user assignable LFOs. On the left are the controls for the two LFOs and on the right are the destination parameters which can be modulated by them.
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The LFO Modulation Destinations
The LFO Controls
Both LFO 1 and 2 have the same controls available.
Use the On/Off switch to turn the LFO on and off.
As with the oscillator controls on the Synth Page, each LFO allows you to select the waveform Shape used. Unlike the Osc 1 and Osc 2 controls though, the LFO shape options are fixed and will not morph from one shape into another. Instead, you will notice the Shape dial 'clicks' from one option to another. The waveform shapes available are Sine wave 
, Pulse wave 
, Sawtooth wave 
and Reverse Sawtooth wave 
.
The Rate dial controls the speed (or frequency) of the LFO. Depending on whether you have 'Sync to tempo' activated in the synth Tempo settings or not, the rate is either freely controlled and measured in Hertz (Hz) or is synced to various musical divisions of the current tempo from 8 Bars at its slowest to 1/64 Triplet at its most rapid. The Hz or tempo divisions are shown in the Playback Timer display as the Rate dial is moved.
The Amount dial controls the height (or amplitude) of the LFO wave and therefore controls the amount by which the selected parameters will fluctuate as they are modulated by the LFO.
The LFO Modulation Destinations
Both of Evolution One's LFOs offer the same twelve parameter destinations which can be modulated by them. You can select as many of them as you want. This gives you a huge amount of control and many, many creative possibilities.
If you have Cutoff selected the LFO will modulate the Cutoff Frequency of your selected filter on the Envelope Page. In the case if the Band Pass Filter, it will modulate the Center of the filter.
Pitch modulates the pitch of your synth sound according to the LFO settings.
Detune modulates the Detune setting for Oscillator 2.
Noise modulates the Level of Noise in your sound.
Reverb modulates the Dry/Wet level of the Reverb effect.
Reso modulates the Resonance amount for the Low Pass Filter and the Width of the Band Pass Filter. The High Pass Filter doesn't have a resonance parameter.
Bit Crush modulates the Sample Rate of the Bit Crusher effect.
Filter Env modulates the Filter Envelope Amount setting.
FM Mod modulates the amount of FM Modulation (the Mod dial).
Decay modulates the Amp ADSR Envelope Decay time.
Osc Mix modulates the Mix setting on the Synth Page which controls the ratio of Oscillator 1 to Oscillator 2 heard.
Volume modulates the Master Level of your sound. Modulating volume with a faster LFO will produce a tremolo effect.