There are three primary waveforms in VCOs 1 and 2 - sawtooth, square, and
triangle. Subjectively, sawtooth sounds the richest, square sounds more hollow,
and triangle sounds like a flute.
Each waveform knob has a signal enhancer above it. These make the waveform
more complex by combining slightly random, slightly time-shifted versions of it.
•
Ultrasaw
enhances the sawtooth wave by combining two slightly time-
shifted copies of it, resulting in a brighter, edgier sound.
•
Pulse Width
varies the lengths of the flat tops and bottoms of the
square pulses - the width - so it's sometimes a rectangle rather than a
square, making the sound more complex.
•
Metalizer
adds a hard edge to the triangle wave. The Metalizer is a type
of wave folder that adds harmonics to the original trianalge wave.
4.3.4. VCO 3 - LFO 3
VCO 3 is a multifunction oscillator, designed to be used as a sound source or as
a modulation source. The Noise oscillator is next to it, and it can also be used as
a modulation source.
•
Coarse
adjusts the pitch ± 2 octaves in semitone steps. The light comes
on when it's centered, when you're up or down one octave, and when
you reach two octaves.
•
Wave
selects the waveform. Repeated button pushes go (from left to
right) between a reverse sawtooth, square, triangle, and sine wave.
Each sounds successively less buzzy, until you get to the pure sine
wave.
•
LFO Div
divides the frequency by up to four (16, 32, 64, 128) when it's
being used as a modulator. This determines the LFO speed.
•
Kbd Track
, an on/off toggle, raises the output level of the oscillator
with successively higher notes. This simulates what happens with, for
example, woodwind and brass instruments.
4.3.5. Noise Generator
Arturia - MatrixBrute Manual - Operation 21
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