Fine
This parameter adjusts the fine tuning of the oscillator
in cents. A value of +/- 100% corresponds to half a
semitone.
Reset
When reset is enabled, the oscillator will always start
at the zero phase when a new key is pressed. When
disabled, the oscillator starts with a random initial
phase. A specific phase angle to start with can be set
within the modulation matrix.
4.4 Noise Generator
All three oscillators generate periodic waveforms with
a certain pitch. Sometimes it is useful, however, to
spice up a sound with a random element that has no
fixed pitch. This can be useful to synthesize percussive
sounds, to recreate the behavior of wind or plucked
string instruments during transients or to synthesize
nature sounds such as fire, water or wind. For such
sounds, Dune offers a white noise generator. White
noise is a type of noise which contains an equal distri-
bution of all frequencies.
Lowpass
The white noise emitted by the noise generator passes
through a low-pass and high-pass filter, to further
shape the timbre of the noise. The LP knob controls
the cutoff frequency of the low-pass filter. Lower val-
ues cause a darker timbre.
Highpass
The HP knob controls the cutoff frequency of the high-
pass filter. When set to zero it has no audible effect,
at higher values the sound becomes increasingly thin
and bright.
Width
Since the noise generator operates in stereo, it can emit
noise for the left and right channels separately. The
width parameter adjusts the stereo width — set to
minimum the noise appears monophonic, set to max-
imum both channels have independent noise sources,
resulting in a wide stereo image.
4.5 Ring Modulator
A further interesting effect that can be applied to the
oscillator stacks 1 and 2 is to multiply them with each
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DUNE 2 User’s Manual
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