12.25

EUROPA SHAPESHIFTING SYNTHESIZER744
Using the Envelope 4 curve as a Spectral Filter curve
Another special feature is that you could use the Envelope 4 curve as a filter curve in the Spectral Filter:
1. Select Envelope 4 and create/modify a curve in the envelope display:
2. In the Filter selector in the Spectral Filter section, select “Envelope 4”:
3. Turn the Freq knob to change the curve’s “cutoff” frequency and the Reso knob to change the curve’s “reso-
nance”.
At Reso=0% the curve is completely flat (no gain or attenuation) and at Reso=100% the resonance corresponds
exactly to the Envelope 4 curve.
The LFO section
An LFO (Low Frequency Oscillator) is used for generating cyclic modulation. A typical example is to have an LFO
modulate the pitch of a signal to produce vibrato, but there are countless other applications for LFOs.
The LFO section features three separate general purpose LFOs, that can be assigned to control selectable parame-
ter(s) in the Modulation Bus section, see “The Modulation Bus section”.
1. Select which of the three LFOs you want to edit by clicking one of the LFO 1, LFO 2 and LFO 3 buttons.
2. Select an LFO waveform by clicking the spin controls to the right of the waveform display, or by click-holding
in the display and dragging up or down.
Besides the standard waveforms (sine, triangle, pulse, etc.) there are random, slope and stepped waveforms. The
shape of the waveforms are shown in the display.
3. Set the LFO frequency with the Rate knob.
D Click the Beat Sync button to sync the LFO to the main sequencer Tempo in Reason.
The Rate parameter now controls the time divisions.
D Click the Key Sync button to restart the LFO at every new Note On.
D Click the Global button to make the LFO common for all voices (monophonic).
D Turn the Delay knob to introduce a delay before the LFO modulation kicks in after a note is played.
Turn clockwise for longer delay times.