Ok I don't understand everything yet, I need to read a couple of things first, for all this to be clear, I don't even see the general picture. Instead of asking questions and not being able to understand the answer, I'll have to read later.I used the following to compute the note frequencies for major 3rd, perfect 4th, and perfect 5th:
where 'n' is the number of semitones between the starting note and the desired note.
Major 3rd : 4 semitones : 2^(4/12) = 1.2599210498949
Perfect 4th : 5 semitones : 2^(5/12) = 1.33483985417
Perfect 5th : 7 semitones : 2^(7/12) = 1.4983069759068
You can also auto-generate a frequency table using the semitone constant c = 2^(1/12), by dividing 440Hz (A4) by 'c' for lower notes, and multiplying by 'c' for higher notes.
That should get you through the frequency lookups and the drum interval selection. The lug constants are from my earlier post (the different resonances - low, med, high):
That's all the math that's needed I think.
And to come up with my own spread sheet.