[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #687 Enhancement: inequal MIDI quantization of equal durations (swing, rubato)

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[issues:#687] Enhancement: inequal MIDI quantization of equal durations (swing, rubato)

Status: Accepted
Created: Sat Sep 27, 2008 02:32 PM UTC by Anonymous
Last Updated: Fri Jan 10, 2014 11:46 AM UTC
Owner: nobody

Originally created by: *anonymous

Originally created by: v.villenave

% In jazz or baroque music, equal values (like eighth notes) may be
% written equallly but are not to be played equally (the "swing" thingy).

% Peter Chubb said:

I think it's a bit hard to do in Scheme (need to do look-ahead in the list
of chords).

What I'd like to see is a general rubato function, that:
  1. takes a parameter (maybe call it `swing') that lengthens on-beat
     phrases, and shortens off-beat phrases by the same amount (so convert
     a8 b to \times 2/3 { a4 b8 } or { a8 b16 c } to \times 2/3 {a4 b16 c}
     or similar)
  2. Within phrasing slurs does a slight accelerando into the phrase
     and a slight decelerando to a-tempo at the end

% See also the discussion on
http://lists.gnu.org/archive/html/lilypond-devel/2008-09/msg00197.html

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