Dave Smith Instruments PROPHET 12 KEYBOARD - Manual (Page 25)

15 Prophet 12 Operation Manual Oscillators
Slave Osc Master Osc
1 2
2 3
3 4
4 1
The effect of Sync is much more easily heard than explained. Here’s a
simple example of how to use Sync.
1. Load the Basic Patch from the Global menu. Oscillator 1 and 2
s
haPe
is set to sawtooth and oscillators 3 and 4 are off.
2. Turn oscillator 2 o
UtPUt
l
evel
to 0. Only oscillator 1 should be
audible.
3. Turn oscillator 1 s
ync
on.
4. Now turn oscillator 1 P
itch
while playing the keyboard. The
harmonic content changes, but not the fundamental pitch. Now do
the same thing while turning oscillator 2 P
itch
. (Remember: only
oscillator 1 should actually be audible.) The fundamental pitch
changes, but the harmonic content is relatively consistent. Oscillator
2 is the master and oscillator 1 is the slave.
Tip: Use glide, an envelope generator, an LFO, the mod wheel, or
other modulation source to sweep the pitch of a slave oscillator.
Of course, each of the four oscillators can be synced, so it’s possible to
have two pairs of synced oscillators or to sync oscillators in series (an
oscillator synced to a synced oscillator, synced to a synced oscillator…).
Note: The o
scillator
1 s
UB
o
ctave
does not sync to oscillator 2. To
sync oscillator 1 and have a sub octave that plays in tune with oscil-
lator 2, use one of the other oscillators as a sub.
Output Level: 0…127— Sets the output level for each of the oscillators.
Note: When using three or four oscillators, it may be necessary to
reduce the levels of each to avoid clipping.
Frequency Modulation (FM): 0…127— Allows one oscillator—called
the modulator, for the purposes of FM synthesis—to modulate the
frequency of another oscillator—called the carrier. The arrows between