Sequential Prophet VS - Page 144

144
FILMUSIC (#69)
This program produces vocal sounds which fade slowly between four pitches,
two of which are LFO-modulated for tremolos which fade in and out. Although
not necessarily an ideal program for lead lines, it can produce interesting, rich
textures with only a few voices.
Keyboard Mode
This program is in Double keyboard mode, and is linked to itself with a 208-
msec delay and minor detuning. This causes an overlapping of dierent
pitches as the program loops. To hear the program without this layering,
switch Double o.
Oscillator Group
Waveforms 67, 74, 75, 76 are used for vocal resonant qualities, tuned at
desired intervals with no ne tuning. If desired, try selecting and adjusting
Coarse Frequency for each oscillator.
The mix envelope moves steadily through points 0 through 4, with each point
determining the order in which the four pitches are heard. The mixer envelope
is set to loop back and forth between points 0 and 3, causing the pattern to
repeat. As the program is in double mode, these pitches lag each other by 208
msec (1/5 second), creating interesting harmonies.
Looking through the modulation section shows that LFO 1 modulates oscillator
D, and LFO 2 modulates oscillator B. Since the mixer envelope fades between
these two oscillators between points 1 and 3, the eects of the LFOs appears
to fade in and out slowly. Since oscillators B and D are at dierent pitches, and
the LFOs run at dierent rates, the program takes on an ensemble texture.
The pressure modulation source has a negative amount, and when used,
lowers the pitch of oscillator A, its only modulation destination.
For other interesting eects, make a copy of this program which loops
between points 1 and 3 (rather than between points 0 and 3), then double that
program with this one, so that the resulting harmonies repeat less often.
Filter
The lter cuto is low enough to allow discernable variations in the amount
of lter envelope modulation. Velocity and keyboard modulation sources
contribute to the increased "swept lter" eect. The lter envelope has an
ADSR shape, with a slow attack. Unlike the mixer envelope, the lter envelope
does not loop.
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