Roland XV-88 Manuale Utente

When a Structure Type of TYPE 3 or TYPE 4 is selected, you 
can adjust the depth of the booster. The booster increases the 
input signal in order to distort the sound. This creates the 
distortion effect frequently used with electric guitars. Higher 
settings will produce more distortion.

For details regarding effect settings, refer to the pages 
shown below.

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The Booster is used to distort the incoming signal.

fig.05-30.e

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 Gain parameter 
(PATCH/WAVE/WAVE) (p. 81).

fig.05-31.e

Booster level

Adds to WG1

Shift in waveform by WG1

Distorted area of the

Waveform changes

WG2

Uses WG1 as LFO

Adjusts WG1 output

A ring modulator multiplies the waveforms of two 
Tones with each other, generating many new overtones 
(inharmonic 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.

fig.05-32