Dave Smith Instruments PROPHET 12 KEYBOARD - Manual (Page 24)

14 Oscillators Dave Smith Instruments
Note: The global Master Tune settings affect the pitch of all oscilla-
tors. See Global Settings on page 8 for more information.
Fine: -50…+50— Fine tune control with a range of a quartertone up or
down. Zero is centered. Steps are in cents (50 cents = 1/2 semitone).
Key Follow: Off, On— When Key Follow is on, the oscillator tracks the
keyboard or note data received via MIDI. When off, the oscillator plays
at its base frequency setting, though the pitch may be affected by modu-
lation from other sources.
Wave Reset: Off, On— When Wave Reset is off, the Prophet 12’s oscil-
lators are free running, which is typically how analog synths behave.
That is, the oscillators are running whether a note is being gated on or
not. When the amplifier envelope is set for a fast attack, this can cause a
soft, but detectable, pop or click at the beginning of a note because the
note might be gated on at a point in the wave’s cycle other than a zero
crossing. The first cycle to play might be truncated. For some sounds,
like monophonic basses, this may actually be desirable. It adds a bit
of randomness to the attack that can make it sound, for lack of a better
word, more organic. When Wave Reset is on, the wave is always reset to
zero—the start of its cycle—when a note is gated on.
Sync: Off, On —Turns oscillator hard sync on. Sync utilizes pairs of
oscillators to force one oscillator (the slave) to restart its cycle every time
the other oscillator (the master) starts a cycle. This provides a way to
create more complex, harmonically rich shapes from simple waveforms.
Oscillator 1
Oscillator 2
Oscillator 1
synced to
Oscillator 2
The arrows between the oscillator select buttons show how the oscillators
are paired, as does the following table.