Controllers; Keyboard - Moog THE SOURCE Owner's Manual

CONTROLLERS
As discussed before, a controller is a circuit that controls another circuit. A controller usually has only an output;
the audio signal rarely "passes through" a controller. A controller may control a signal source, a modifier, or another
controller. The output of a controller is generally sent to the control input of the circuit to be controlled.
KEYBOARD
The most important controller on The Source is the keyboard. The keyboard outputs two essential pieces of
information: control voltage and trigger state.
The keyboard control voltage is unique for each key, and is calibrated at 1 volt per octave, or 1/12 volt per key.
If a given key generates 1 volt, the key one-half step higher will generate 1 + 1/12 volts, and so on.
The voltage-controlled circuits in The Source are calibrated to this system.
The octave transpose switch labeled "+1" adds one volt to the keyboard voltage; the "zero" switch returns to
nominal keyboard voltage.
The keyboard voltage determines the frequency of the oscillators and controls the filter's cutoff frequency in varying amounts.
Normally, changes in keyboard voltages are instantaneous, but a lag in change rates can be applied with the KB Glide control.
Touch program
VOLTAOE CONTROLLED FILTER
| | KB TRACK
32' I I IV I
FOOTAGE
I SING I |MUL1
TRIGGER
MEMORY
FOOTAGE WAVESHAPE
I INTERVALI
OSCILLATOR BANK
FILTER CONTOUR
LOUOIMEBB CONTOUR
MODIFIERS
REC1 REC2 STOP CONTINUE PLAY 1 PLAY 2 - REC PLAY ARKGGIO S&H S&HFI
EXTJTRIG SAVE VERIFY LOAD
REC2 STOP CONTINUE PLAY 1 PLAY 2 REC PLA AG ^ J ^^^ ^^^
PROGRAMS
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