But, having picked up a guitar, I got my tap measure out and reverse engineered the fret arithmetic.
Half tone count as some ratio the Nth power, where N counts half steps. 12 steps double the frequency, take the 12 root and we can construct all the 13 octaves by frequency. When doing this the perfect pitch step is a 1.5 ratio, or close enough.
So, having done this on my spread sheet, I got the bug, I want to construct chords out of those tones. The spreadsheet is, after all, a perfect data base to construct all sort of chords and scale patterns. So, my spreadsheet will become an awkward electronic organ. Not going far, will quit soon.
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