Korg prologue Owner's Manual page 26

SYNC: With this type of modulation, the phase of Oscillator 2 is forcibly synchro-
nized to the phase of Oscillator 1.
This adds harmonic overtones to the frequency of Oscillator 2, making a complex
waveform.
VCO 1 Wave
Sync
VCO 2 Wave (original)
VCO 2 Wave (output)
CROSS MOD DEPTH knob
Cross Mod (Modulation) allows Oscillator 1 to modulate the pitch of Oscillator 2.
Turning the knob to the right results in stronger modulation.
MULTI ENGINE
The MULTI ENGINE is a digital
sound generation engine developed
especially for this instrument.
This engine operates as either a
noise generator, a VPM oscillator
or a user oscillator, to make a wide range of sounds not possible with analog oscil-
lators. You can upload your own oscillator programs to the user oscillator to make
sounds.
NOISE/VPM/USR switch
This sets which engine will be used, the noise generator, VPM oscillator or user os-
cillator.
(NOISE): The MULTI ENGINE is used as a noise generator.
(VPM): The MULTI ENGINE is used as a VPM oscillator.
USR: The MULTI ENGINE is used as a user oscillator.
The OCTAVE switch, TYPE knob and SHAPE knob work differently, depending on
the NOISE/VPM/USER switch setting. The settings are explained below.
[0...1023]
[ , , USR]
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