Arturia MINIBRUTE 2S, User Manual

Page: 54 / 171

6.1.2. Signal enhancers
Signal enhancers (or wave-shapers) transform or distort the oscillator’s basic pitched signal
to increase their harmonic content, and make them sound brighter and richer. The MiniBrute
2S provides three signal enhancers:
• The
Ultrasaw
builds two phase-shifted copies of the basic sawtooth signal. These
copies have independent and ever-evolving phase shifts with respect to each
other, and are eventually mixed with the sawtooth signal. This results in a lively,
rich, and bright ensemble effect whose character depends on the modulation
rates of the phase-shifted copies.
• The
Pulse Width Modulator
(or
PWM
) takes the square wave and changes the
ratio between the time the waveform is at maximum or minimum. The square
wave corresponds to a 50% PW. The pulse width can be set over a wide range
(50% to 90%) making it possible to create a wide variety of instruments that
sound "reedy", or like woodwinds.
• The
Metalizer
takes the basic triangular waveform and “warps/folds” it to create
very complex jagged waveforms that are rich in high harmonics. This results in
“metallic” pitched sounds that are ideal for harpsichord- and clavinet-type tones.
Dynamic modulation (LFO or envelope) of the warp/folding parameters opens
up a realm of clangorous, spring coil-like sounds.
The generation of an Ultrasaw waveform
The pulse width of a square wave can be modulated
48 Arturia - User Manual MiniBrute 2S - Basics of synthesis