Selecting The Basic Waveform For The Sound (2) (Oscillator 2) - Roland JP-8080 Owner's Manual

Shape for sawtooth waveforms
Sawtooth wave sounds on different synthesizers differ in
subtle ways, and the sound of the sawtooth wave often
determines the character of the synthesizer itself.
On the JP-8080 you can use the Shape parameter to make
fine adjustments to sawtooth wave sounds to create a vari-
ety of sawtooth waves, for an even greater range of sound-
creating possibilities.
(Triangle wave)
This is a simple sound with few overtones. It is used for cre-
ating flute sounds etc.,
[1] SHAPE:
Specify the degree to which the triangle wave will be
deformed. As the knob is rotated to the right, the waveform
will be modified more greatly, producing a sound with
more overtones. This will produce a sound similar to square
wave with an LPF (low pass filter, p.73) applied to it.
changes in Shape
[2] LFO 1 DEPTH:
When LFO 1 (p.77) is applied to Shape, this parameter spec-
ifies how greatly Shape will be affected. As the knob is
rotated to the right, Shape will be affected more greatly.
[RING] (Ring Modulator Switch)
For details on the ring modulator, refer to "Selecting the
Basic Waveform for the Sound (2) (Oscillator 2)" (p.70).
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Selecting the Basic Waveform
for the Sound (2) (Oscillator 2)
In the same way as for the OSC 1 section, this selects the
waveform that will be the basis of the sound. By combining
OSC 1 and OSC 2, a variety of sounds can be created.
You can also input audio from an external source without
using the OSC 2 waveform.
[WAVEFORM]/[CONTROL 1]/[CONTROL 2]
[WAVEFORM] selects the waveform of OSC 2. Only when
square wave and noise are selected, [CONTROL 1]/[CON-
TROL 2] will modify parameters unique to these wave-
forms.
When you move [CONTROL 1]/[CONTROL 2], the name
of the parameter being edited will appear in the display.
In the explanation below, [CONTROL 1] is abbreviated as
[1], and [CONTROL 2] as [2].
(Square wave)
This sound is similar to a woodwind instrument. It also
widely used in making typical "synthesizer" sounds.
[1] PULSE WIDTH:
Set the width (pulse width) of the square wave. As the knob
is rotated to the right, the pulse width will change, produc-
ing a sound with more overtones.
changes in Pulse Width
[2] PWM DEPTH:
The technique of applying LFO 1 (p.77) to the Pulse Width is
referred to as Pulse Width Modulation (PWM). PWM Depth
determines how greatly PWM will be applied. As the knob
is rotated to the right, Pulse Width will be modulated more
greatly, creating a broader and more "smeared" sound.