Roland JUNO-Di Editor Owner's Manual page 31

Parameter
TONE 1 & 2, 3 & 4 BOOSTER
Booster
The Booster is used to distort the incoming signal.
fig.Boost1.e
Booster level
Ring Modulator
fig.RingMod
A ring modulator multiplies the waveforms of two tones with each other,
generating many new overtones (in harmonic partials) which were not
present in either waveform (Unless one of the waveforms is a sine wave,
evenly-spaced frequency components will not usually be generated.).
As the pitch difference between the two waveforms changes the harmonic
structure, the result will be an unpitched metallic sound. This function is
suitable for creating metallic sounds such as bells.
Detailed Editing for a Patch (PATCH Parameters)
Value Explanation
Specifies the amount of boost that is applied (when the Structure Type is 03 or 04)
0, +6,
The booster distorts the sound by boosting the input signal, producing the distortion
+12, +18
effect that is often used with an electric guitar. Increasing this value will produce
stronger distortion.
In addition to using this to create distortion, you can use the
waveform (WG1) of one of the tones as an LFO which shifts the other
waveform (WG2) upward or downward to create modulation similar
to PWM (pulse width modulation). This parameter works best when
you use it in conjunction with the WAVE GAIN parameter (p. 32).
fig.Boost2.e
Uses WG1 as LFO
WG1 TVA
WG2
WG2
Adds to WG1
Shift in waveform by WG1
Adjusts WG1 output
Booster
Distorted area of the
Waveform changes
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