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Issue 1278 in lilypond: Enhancement: arrow notation for quarter-tones
From: |
lilypond |
Subject: |
Issue 1278 in lilypond: Enhancement: arrow notation for quarter-tones |
Date: |
Tue, 28 Sep 2010 18:52:49 +0000 |
Status: Accepted
Owner: ----
Labels: Priority-Low Type-Enhancement
New issue 1278 by v.villenave: Enhancement: arrow notation for quarter-tones
http://code.google.com/p/lilypond/issues/detail?id=1278
% Feature request by Joseph:
% http://lists.gnu.org/archive/html/bug-lilypond/2010-09/msg00348.html
%% In arrow quarter-tone notation, up- and down-arrows are
%% added to regular accidentals to indicate raising or lowering
%% by a quarter-tone. This allows for two different accidentals
%% to indicate raising the pitch by a quarter-tone (natural-with-
%% up-arrow and sharp-with-down-arrow) and similarly for lowering
%% the pitch by a quarter-tone (natural-with-down-arrow and flat-
%% with-up-arrow.
%%
%% For a description of the notation, see K. Stone, "Music Notation
%% in the Twentieth Century", pp. 67-68 (scans not attached since
%% file-size is too big, but can be provided on request).
%%
%% Following the standard Dutch -is/-es sharp/flat notation, and
%% -ih/-eh for raising/lowering by 1/4-tone, as described in NR:
%%
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Writing-pitches#Note-names-in-other-languages
%%
%% Define:
%% cih = c-natural-with-up-arrow = c + 1/4
%% ciseh = c-sharp-with-down-arrow = c + 1/2 - 1/4
%% ceh = c-natural-with-down-arrow = c - 1/4
%% cesih = c-flat-with-up-arrow = c - 1/2 + 1/4
{
cih2 ciseh2 %% these are the same pitches, but with different
%% accidentals, both equal to c + 1/4-tone
ceh2 cesih2 %% similarly, these are two different ways of writing
%% the same pitch c - 1/4-tone
}
%% Lilypond's current method of internal pitch representation does not
%% permit two different accidentals for the same pitch in this way.
%% This is a general issue that affects implementation of many other
%% microtonal notations beyond arrow notation for quarter-tones.
%%
%% For background and further details see discussion on lilypond-devel:
%% http://www.mail-archive.com/address@hidden/msg30934.html
Attachments:
StoneArrowed.png 171 KB
StoneArrows2.png 137 KB
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