The feature is already available! Example:
\version "2.10.0"
#(define base-tempo 100)
\score{
\relative c'{
\set Score.tempoWholesPerMinute = #(ly:make-moment base-tempo 4)
c d e f
\set Score.tempoWholesPerMinute = #(ly:make-moment (/ (* base-tempo 3) 4) 4)
c d e f
}
\midi{}
}
An extra advantage of this solution in this specific application is that it
doesn't result in new printed metronome marks.
/Mats
Graham Percival wrote:
Thanks, feature request added as
http://code.google.com/p/lilypond/issues/detail?id=319
Cheers,
- Graham
live action wrote:
I was wondering if the metronome number in a \tempo command could be
a scheme number. This would make it easier to do effects for fermata
and ritards and relative tempo changes, in midi files.
For example, it would be nice to be able to do something like this:
----------------
#(define base-tempo 100)
\tempo 4 = #base-tempo
% some music
% insert markup for "half note = dotted quarter" metronome mark
% and override so the following is invisible in the score
\tempo 4 = #( / ( * base-tempo 3) 4)
---------------
This way, one could change the base tempo in one place, and all the
tempi would adjust automatically.
I'm guessing from the error messages I get when I try this, that
this is a feature request, but it would be awesome to be able to do
this.
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--
=============================================
Mats Bengtsson
Signal Processing
Signals, Sensors and Systems
Royal Institute of Technology
SE-100 44 STOCKHOLM
Sweden
Phone: (+46) 8 790 8463
Fax: (+46) 8 790 7260
Email: [EMAIL PROTECTED]
WWW: http://www.s3.kth.se/~mabe
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