Korg Opsix Owner's Manual page 8

FM
Modulator
FB
Phase WIDTH
Oscillator
Output
Ring Mod.
Oscillator Rectifier
1-DEPTH DEPTH
Output
As an example, when the LFO is used to raise and lower the pitch,
you will hear a vibrato-like effect. FM (Frequency Modulation) is
an ultra high-speed vibrato. The phase of an oscillator is modulated
using the input signal from the modulator, which rapidly raises and
lowers its pitch. (This works the same as Korg's VPM tone
generator and typical FM synthesizers.)
As modulation is incredibly fast, we hear the result not as vibrato,
but as a change in tone.
In this Operator mode, we can use the FB and WIDTH parameters
to control the amount of self-feedback and the width of the
oscillator waveform.
Pitch
• Typical program: 053: Strum Down, 232: [TMP] 2OP FM
Modulating the amplitude of a signal creates tremolo. Ring
modulation, or Ring Mod for short, is ultra-fast tremolo. It is
historically called this because of the shape of the electrical circuit
originally used to create the effect. The input signal from the
modulators are multiplied with the carrier oscillator to rapidly
change the amplitude of the signal. As with FM, the extremely fast
Modulator
modulation is perceived as a change in tonal character. The input
from the modulator(s) can be processed by a rectifier, where the
"SHAPE" parameter controls the amount of rectification. The larger
the value, the more overtones will be added.
• Typical program: 069: Ring It On, 236: [TMP] Ring Mod
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