linuxaudio.org

On Fri, Jul 13, 2012 at 11:05:02AM +0200, Funs Seelen wrote:

quoted text
> On Thu, Jul 12, 2012 at 7:21 PM, Rustom Mody  wrote:

>

> >

> > The pythagorean comma is (by definition??) the gap between B# and C where

> > by B#  means the 12th in a circle of perfect fifths starting at C.

> >

> >

> I would say "a possible gap". It depends on the used temperament, in this

> case Pythagorean (perfect fifth: 3/2). For example mean tone temperament

> doesn't care that much about fifths and uses 5/4 for major thirds.

> ...

Writing B#, E#, Fb, Cb or using double accidentals is first of all

a matter of consistent notation. A normal major or minor scale should

have all of A..G (ignoring # and b) in it and not repeat one of them.

That way the character (and the position of a note on a staff)

corresponds one-to-one to the note's position in the scale.
For example the last three notes of F# Maj. are written as
 D#  E#  F#
and not
 D#  F  F#
Now if the actual frequencies of E# and F need to be different

depends on the temperament. If they need to, and the instrument

doesn't have a separate key for E#, that just means you can't

use the F# Maj. scale with the given temperament.
Ciao,
--

FA
A world of exhaustive, reliable metadata would be an utopia.

It's also a pipe-dream, founded on self-delusion, nerd hubris

and hysterically inflated market opportunities. (Cory Doctorow)
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