Just (about) Guitar Fretboard by Robin Perry

I have designed and had my guitar re-fretted according to the system
described here. I used a method that involves increments of +/- 15
cents to arrive at fret widths and tuning.

The Frets:

The standard fret width on the guitar is 100 cents. Mine has a
repeating 7 fret pattern that goes like this:

N}
U} 70-115-85-115-115-85-115-70-115-85-115-115-85-115......to 24th fret
T} * *

Every seven frets is 700 cents due to the repetition. From any fret,
you can move up the neck to create either a 1/2/5 or 1/4/5 type
progression (in some cases, both.) Depending on how it's tuned, you
can also use different fingering patterns to hit inversions and find
other progressions. I have experimented with several tunings - starting
with an open justabout 4,5,6,7,8,10 - but am currently tuned
as follows:

1470 E F-- F#- G-- G#- A Bb- B C-- (successive
1200 C#++ D D#+ E E#+ F#++ G+ G#++ A frets are
885 A#+ B- B# C#- D D#+ E E#+ F#- 3/2(-2c)
700 G#++ A A#+ B B#+ C#++ D+ D#++ E of the fret
270 E F-- F#- G-- G#- A Bb- B C-- 7 frets back)
0 C#++ D D#+ E E#= F#++ G+ G#++ A
-------------------------------------------------------------
0 70 185 270 385 500 585 700 770

With the high string tuned to "E", the tuning is an inversion of an F#++
9 chord (C#++ on bottom / root omitted).

I have calculated fret factors for any scale length. I can also provide
a fretboard pattern for any scale length. Let me know if
I can help.

I'm very interested in your comments, guitarist or not.


Robin Perry





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