On Thu, Sep 13, 2018 at 08:36:05AM -0700, foxfanfare wrote:
[...]
> Yes, very much! I tried all your proposals and now everything works
> great, thanks!
Glad to help.
> I just need to find how I can make rallentando and the midi output
> will be "acceptable" for my needs!
[...]
Usually I just use "fake" \tempo markings for things like this. For
example:
% global is my catch-all for various stuff that should be
% applied globally to every staff.
global = {
\tempo 4 = 100 % starting tempo
s1*12 % nothing interesting for next 12 bars
% Simulated rallentando
% These are tagged so that they don't show up in the
% printed score.
\tag #'midi \tempo 4 = 90
s8
\tag #'midi \tempo 4 = 85
s8
\tag #'midi \tempo 4 = 80
s8
\tag #'midi \tempo 4 = 75
s8
\tag #'midi \tempo 4 = 70
% ... etc., you can change s8 to any other duration
% depending on how fine-grained you want it to be, and
% repeat as often as desired to span the full length of
% the rall.
}
...
\score {
\removeWithTag #'layout
<<
\global
\music
>>
\midi {}
}
If you have a lot of rallentando's in your score, this quickly becomes
tedious, so you might want to consider writing a Scheme macro to
automatically do this for you. (If you need help with this, just ask and
one of the Scheme experts here will help. I'm only a beginner at Scheme
though I did manage to write a function that generates a bunch of midi
expression events to simulate crescendo/decresc on a single note, e.g.,
in a horn part. It's not perfect, but with a little push, Lilypond can
be coaxed to do quite a lot even with its limited midi support.)
T
--
I am not young enough to know everything. -- Oscar Wilde
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