Arturia MICROFREAK, Руководство пользователя

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5. MAKING CONNECTIONS
5.1. Control Signals
The Matrix is the place where you connect the control signals from the various modules
on the MicroFreak together. Control signals differ from audio signals in that they are much
slower and are uniquely suited for control.
Control signals are slowly moving waves, usually in the range from zero to 100 Hz, that
can be used to modulate the digital oscillator, the analog filter, and other destinations in the
MicroFreak. When you apply a control signal you can decide to only use a certain amount
of it; using the Matrix encoder you can dial-in any amount from -100% to +100%.
A number of modules on the MicroFreak are dedicated to generating Control signals. Each
does that in a specific manner:
• The LFO creates slow, regular waves. When you connect an LFO to an oscillator
you will hear the pitch of the oscillator going up and down. The LFO is capable
of generating frequencies up to 100 Hz.
• An envelope creates a single wave that peaks and then gradually diminishes and
dies. When you connect an envelope to the pitch input of the oscillator, you will
hear a sudden rise in pitch followed by a slow descent. The Cycling Envelope can
be set to repeat. In this mode it becomes a second LFO, capable of generating
complex modulation signals.
A special case is a gate signal. A Gate is a signal rising at Note On, and falling at Note Off.
It is useful to start an envelope. The keyboard of the MicroFreak generates gate signals that
start the envelope of the MicroFreak.
To summarize:
There are three kinds of Control Signals: triggers, gates and waves.
• Triggers are very short signal spikes. They are used to start an envelope
generator, an LFO, or a sequencer. Clocks generate triggers…
• A gate is somewhat longer: its purpose is to keep something going, like the hold
stage of an envelope generator. Keyboards generate a gate when you press and
hold a key.
• A waveform is a signal that can have any duration; it usually cycles from high
to low and vice versa. On the MicroFreak the LFO and the two envelopes create
slow waveforms.
Control signals are to a MicroFreak sound designer/performer what color and line are to a
painter.
The MicroFreak Matrix
Arturia - User Manual MicroFreak - Making Connections 28