Another thing: there are certain interface standards like e.g. oscillators accepting 1V/Octave inputs.
That means most Eurorack modules that produce tones have an calibrated input into which you can e.g. route precisely 1V to make the tone go up an octave, -4V down four octaves etc. If you route in 1/12V it goes up an semitone. If your signal is in between you do microtonal changes, vibrato, pitch bend and similar things.
That means most Eurorack modules that produce tones have an calibrated input into which you can e.g. route precisely 1V to make the tone go up an octave, -4V down four octaves etc. If you route in 1/12V it goes up an semitone. If your signal is in between you do microtonal changes, vibrato, pitch bend and similar things.