6.1. The Voice Tune section
The Farfisa has 12 independent master oscillators, which each drive 5 dividers, plus there’s
1 extra divider for the low “C” note, so there is a total of (1+5)*12+1=73 frequencies being
generated all the time (even more in Farfisa V, because of its extended key range). This
system of oscillators and dividers also accounts for the fact that the same notes in different
octaves (e.g. all “C” notes) are phase-locked.
You can use these controls to individually tune any of the 12 oscillators. You can reset any
one to its central position by double-clicking on it. If you reset all 12 tuning pots to 0 cents,
then Farfisa V will be tuned to exactly A4=440 Hz equal temperament (although this is not
representative of the sound of a real Farfisa). As such, many of the organ templates feature
certain notes that are tuned slightly off center, giving it that classic organ sound. These
controls can be mapped to a MIDI controller to let you tweak note tuning in realtime.
Arturia - User Manual Farfisa V - Advanced Panel
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