Drambo Filter Note Tracking

I believe the following is true:

The Drambo note range is C-2 to C6 (relative to C3 middle C) corresponding to MIDI notes 0 to 96, CV 0 to 1, 0.125 step per octave. By diligent testing, I have determined that C2 is unaffected by filter note tracking adjustment (cutoff frequency modulated by keyboard note). This corresponds to MIDI 48 or CV 0.5. When note tracking is set to 1, filter cutoff frequency tracks the note exactly, doubling for each octave. This also shows that cutoff frequency modulation is logarithmic, so the same modulation amount has the same effect on pitch (timbre) in any octave.

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