Re: [tuning] Digest Number 5352-fret position computations

AFAIK, the most general program available to compute fret positions is
one by the late inventor Eduardo Sabat-Garibaldi in his book on the
Dinarra, guitar fretted to 53 notes of
the 1/9th skhisma temperament (similar to Helmholtz's 1/8th skhisma
except that it favors the minor third rather than the major). The book
is in Spanish, but an English translation was being produced when he
died unexpectedly. Details and the program may be available on the
internet, I haven't looked.

IIRC, the program took not only string diameter, fret width, and fret
height into consideration, it also used finger width, but it's been a
number of years since I've
read the book.

Sorry, I don't recall the exact title and I've misplaced my copy. The UC
library system owns it, however. You can probably Google it.

--John

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Hello John,

Nice to hear from you.

The classic frequency equation for strings requires four variables:
Diameter, Mass per unit length (or density of the stringing
material), Length (overall vibrating length), and Tension.

A less dense stringing material (nylon) requires less down-bearing
force than a more dense stringing material (steel).

A long (i.e., flexible) string requires less down-bearing force than
a short (i.e., stiff) string.

A slack (less tense) string requires less down-bearing force than a
taught (more tense) string.

Unless these three variables (in addition to diameter) are also
taken into considered, any data with regard to the down-bearing
force will have little meaning.

Cris

--- In tuning@yahoogroups.com, "John H. Chalmers" <JHCHALMERS@...>
wrote:
>
> AFAIK, the most general program available to compute fret
positions is
> one by the late inventor Eduardo Sabat-Garibaldi in his book on the
> Dinarra, guitar fretted to 53 notes of
> the 1/9th skhisma temperament (similar to Helmholtz's 1/8th skhisma
> except that it favors the minor third rather than the major). The
book
> is in Spanish, but an English translation was being produced when
he
> died unexpectedly. Details and the program may be available on the
> internet, I haven't looked.
>
> IIRC, the program took not only string diameter, fret width, and
fret
> height into consideration, it also used finger width, but it's
been a
> number of years since I've
> read the book.
>
> Sorry, I don't recall the exact title and I've misplaced my copy.
The UC
> library system owns it, however. You can probably Google it.
>
> --John
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.476 / Virus Database: 269.10.1/888 - Release Date:
7/6/07 6:36 AM
>

----- Original Message -----
From: "Cris Forster" <cris.forster@comcast.net>
To: <tuning@yahoogroups.com>
Sent: 08 Temmuz 2007 Pazar 20:29
Subject: [tuning] Re: Digest Number 5352-fret position computations

> Hello John,
>
> Nice to hear from you.
>
> The classic frequency equation for strings requires four variables:
> Diameter, Mass per unit length (or density of the stringing
> material), Length (overall vibrating length), and Tension.
>
> A less dense stringing material (nylon) requires less down-bearing
> force than a more dense stringing material (steel).
>
> A long (i.e., flexible) string requires less down-bearing force than
> a short (i.e., stiff) string.
>
> A slack (less tense) string requires less down-bearing force than a
> taught (more tense) string.
>

taut

> Unless these three variables (in addition to diameter) are also
> taken into considered, any data with regard to the down-bearing
> force will have little meaning.
>
> Cris
>
>
>
> --- In tuning@yahoogroups.com, "John H. Chalmers" <JHCHALMERS@...>
> wrote:
> >
> > AFAIK, the most general program available to compute fret
> positions is
> > one by the late inventor Eduardo Sabat-Garibaldi in his book on the
> > Dinarra, guitar fretted to 53 notes of
> > the 1/9th skhisma temperament (similar to Helmholtz's 1/8th skhisma
> > except that it favors the minor third rather than the major). The
> book
> > is in Spanish, but an English translation was being produced when
> he
> > died unexpectedly. Details and the program may be available on the
> > internet, I haven't looked.
> >
> > IIRC, the program took not only string diameter, fret width, and
> fret
> > height into consideration, it also used finger width, but it's
> been a
> > number of years since I've
> > read the book.
> >
> > Sorry, I don't recall the exact title and I've misplaced my copy.
> The UC
> > library system owns it, however. You can probably Google it.
> >
> > --John
> >
> >