Dave Smith Instruments PRO 2 - Manual (Page 31)

21 Pro 2 Operation Manual Oscillators
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 oscillator 2, use one
of the other oscillators as a sub.
Wave Reset: Off, On— (In the
osc tuning
tab in the OLED display)
When Wave Reset is off, the Pro 2’s oscillators 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 actu-
ally be desirable. It adds a bit of randomness to the attack that can make
it sound 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.
Key Follow: Off, On— (In the
osc tuning
tab in the OLED display)
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 modulation from other
sources.
Frequency Modulation (FM): 0…127— (In the
osc mods
tab in the
OLED display) Allows one oscillator (the modulator in FM synthesis
terms) to modulate the frequency of another oscillator (the carrier). The
following table shows the modulator/carrier relationship between the
oscillators.
Carrier Modulator
Oscillator 1 Oscillator 2
Oscillator 2 Oscillator 3
Oscillator 3 Oscillator 4
Oscillator 4 Oscillator 1
Turning up FM for oscillator 1 causes it to be modulated by oscillator 2,
turning up FM for oscillator 2 causes it to be modulated by oscillator 3,
and so on.