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Subtractive

The LFOs can modulate the oscillator transpose at audio rate, which imitates FM synthesis while in subtractive synth mode.

  1. Initialize a synth clip with Shift+Synth. Set LFO2 Shape to Sine.
  2. Set the LFO2 Rate to 40.
  3. Play a note while turning up the modulation depth for LFO2 -> OSC1 Transpose. Set this modulation depth to 10 for now, and press Select to modulate this modulation depth using ENV2. Set ENV2 -> (LFO2 -> OSC1 Transpose) to a value of 50.

When a note is played, ENV2 begins to move through its stages modulating the modulation depth of LFO2 -> OSC1 Transpose. ENV2 decays to the value set by ENV2 Sustain.

Examples

  • If ENV2 Sustain is set to 25, LFO2 -> OSC1 Transpose will settle to the set value, in this case 10.
  • If ENV2 Sustain is set to 0, LFO2 -> OSC1 Transpose will settle towards 0.
  • If ENV2 Sustain is set to 50, LFO2 -> OSC1 Transpose will settle towards a value higher than 10.

From here, there are many possibilities.

Experiments

  • Adjust the waveshapes of the LFOs for different tones.
  • The LFO2 Rate can be modulated with another source to get variation in tone.
  • ENV2 Sustain can be modulated using LFOs.
  • LFO1 could be used as another audio rate modulation source.
  • The LFOs could be used to FM the LPF Frequency instead of OSC1 Transpose for a different effect.