140
SATIR (#44)
Depending on how you play it, this program can take on vocal or sitar-like
characteristics. Using the Mod wheel adds to the sound's shimmering tone.
Keyboard Mode
Normally, this program is in Single keyboard mode, its Split and Double
mode parameters can be activated by simply selecting either mode. Pressing
Split, we nd that the original program plays between C3 and top C of the
keyboard, while the linked program (#46, CLAVIBEL) covers all keys below C3.
Pressing Double, the same two programs play simultaneously across the entire
keyboard with no detuning between them.
Oscillator Group
Oscillators A and B both use waveform #71, which, when detuned as in this
program, produces a voice-like resonant sound. Oscillators C and D both
use waveform #92, a complex waveform suitable for metallic sounds. Like
oscillators A and B, oscillators C and D are slightly detuned, assisting in
simulating the sitar-like release of the program.
The mixer envelope is fairly simple: as a note is sustained, the oscillator
mix shifts from oscillator B to a blend of oscillators A and B, passing briey
through the center of the oscillator diamond. As the mix point moves towards
points 1 and 2, oscillators C and D add to the harmonic complexity of the
sound, and as the mix point moves from point 2 to the sustain point (#3),
many of the higher harmonics fade out, leaving the vocal timbre produced by
detuned oscillators A and B.
When the note is released, the mix point begins to emphasize oscillators C
and D again, until the other two oscillators are no longer present in the mix
at all. When notes are played staccato, the program does not linger around
the relatively static sustain point, and the release stage of the mixer envelope
simulates the delayed resonance of a sitar's sympathetic strings.
If the Mod wheel is used, LFO 2 begins to detune oscillators and C even
farther, while at the same time, it causes shifts from oscillator B towards
oscillator D and back, adding more motion to the sound.
Stepping through the modulation section with Source Select shows the
pressure source has a negative modulation amount applied to the frequencies
of all four oscillators. Thus, bearing down on the keyboard allows you to lower
the program pitch slightly.
Looking through the modulation section shows that velocity has moderate
inuence over the lter envelope amount, the A-C and B-D axes, voice
panning, and the overall volume.
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