Sequential Prophet VS - Page 117

117
LFO Group
Both LFOs are set for triangle waves, and have almost the same rates (12 and
13). This dierence is not accidental: small adjustments like this add motion
through low-frequency “beating.” We will want to see how the LFOs are routed
through the Modulation module.
Modulation
Setting Source Select to LFO 1, we then press Destination Select to nd that
LFO 1 is modulating the A-C mixer axis, as well as the rate and amount of LFO
2. LFO 2, in turn, is modulating the B-D axis as well as the rate and amount of
LFO 1. Both LFOs modulate the panning of each voice.
The LFOs are therefore cross-coupled—each controlling the other at a slightly
dierent rate. This feedback produces a constant change in the LFO rates,
which is coupled to both the oscillator mixer and the voice pan system—
because LFO 2 also has this destination.
Although some of the other modulation sources are routed, they do not
actually contribute signicantly to the patch.
Voice Control
Unison/Detune was discussed above. Glide is not used, and Program Volume
is set to 20 so that this program won’t overwhelm the others. If you want, you
can make it a lot louder.
Cycle through the Voice Pan setups and you will nd the initial position of
the voices to be evenly distributed within the stereo eld. With the LFO
modulation, voices pan continuously between the left and right outputs, yet
rarely are all voices panned entirely to either output.
Chorus
Both Chorus channels are on. Rate is set to minimum, which adds a doubling
eect to the eight voices already playing in unison. For more motion, increase
Rate.
In summary, this patch results from the interaction of up to ve separate and
independent dynamic actions:
Oscillator mixer sweep by mixer envelope and LFOs.
Amplier envelope tremolo.
LFO rate and amount modulation.
LFO voice panning.
Unison/Detune and Chorus.
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