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Re: Microtonal accidentals
From: |
Keith OHara |
Subject: |
Re: Microtonal accidentals |
Date: |
Fri, 08 Nov 2013 10:10:19 -0800 |
User-agent: |
Opera Mail/12.16 (Win32) |
On Fri, 08 Nov 2013 01:30:02 -0800, Hans Aberg <address@hidden> wrote:
On 8 Nov 2013, at 01:47, Keith OHara <address@hidden> wrote:
On Thu, 07 Nov 2013 13:26:04 -0800, Hans Aberg <address@hidden> wrote:
On 7 Nov 2013, at 21:47, Keith OHara <address@hidden> wrote:
Hans, I am late, but can I persuade you to try this with sharp and flat
representing 4 tone-steps rather than 5 ?
It is not possible to do that with current LilyPond;
Graham Breed retuned the fifth in his regular.ly, so ....
Well, neither LilyPond nor Graham will object if we adjust the naming convention
(as attached and at http://k-ohara.oco.net/Lilypond/).
With 53 steps, there is an interval very close to how a violinist would play D
F# in traditional notation. If you choose the sharp to represent 4/53 of an
octave, then 53-step notation also shows this interval as D F#.
Then the glyph to show the fifth B F#' would get an arrow indicating that it is
larger by a comma; the M-m=5 alteration would use the symbol sharp.uparrow. I
find this convention uses fewer arrows to represent real music.
In JI C major, the D minor triad is out of tune. If trying to pivot sequence of
triads C F Dm G C the pitch will slip with a syntonic comma. So the pitch must
be adapted somehow.
We are led to a different frequency for the D depending on whether we go
through F (two fifths down and major third up) or through G (two fifths up).
Using 53 steps per octave lets us see that, with a nice scaffold of
equally-spaced named pitches that might ease understanding.
53EDO_2_16.ly
Description: Text Data
- Re: Microtonal accidentals, (continued)
- Re: Microtonal accidentals, Hans Aberg, 2013/11/03
- Re: Microtonal accidentals, Joseph Rushton Wakeling, 2013/11/03
- Re: Microtonal accidentals, Hans Aberg, 2013/11/03
- Re: Microtonal accidentals, Keith OHara, 2013/11/07
- Re: Microtonal accidentals, Hans Aberg, 2013/11/07
- Re: Microtonal accidentals, Keith OHara, 2013/11/07
- Re: Microtonal accidentals, Hans Aberg, 2013/11/08
- Re: Microtonal accidentals,
Keith OHara <=
- Re: Microtonal accidentals, Hans Aberg, 2013/11/08
- Re: Microtonal accidentals, Hans Aberg, 2013/11/03
- Re: Microtonal accidentals, Hans Aberg, 2013/11/03
- Re: Microtonal accidentals, Hans Aberg, 2013/11/04
- Re: Microtonal accidentals, Graham Breed, 2013/11/03
- Re: Microtonal accidentals, Hans Aberg, 2013/11/03
Re: Microtonal accidentals, Keith OHara, 2013/11/07