Re: Tempo changes for MIDI output.

[Warren Stickney]

Matthias,

You can specify two \score blocks, one for the paper output and the other
for the midi.

I do this often since I do not want the standard tempo markings on my paper
output, but do want the tempo changes in my midi.  Here for my paper output
I use as an alternative markup text to show, for example, minim = dotted
minim across the tempo change bar.  I use notehead/stem/dot glyph form for
the minim and dotted minim.

So I use two global definitions, one which has the skips, and common
elements such as time signature changes as required for the paper ouput, and
one with the skips and tempo changes for the midi.

For example:

\score { \notes \transpose c c
         \context ChoirStaff = All <<
           \Soprano      % these have earlier been combined with my
\globalpaper
           \Alto
           \Tenor
           \Bass
                                                  >>

         \paper { }
}

\score { \notes \transpose c c
         \apply #unfold-repeats <<
            \globalmidi
            \Soprano
            \Alto
            \Tenor
            \Bass
                                                  >>
         \midi { \tempo 4=72 }


Warren Stickney
Wellington,
New Zealand

Replying to your:

> Hi,
>
> I want tempo changes to affect MIDI output only, i.e. there should be no
> metronome marks in the output. Just removing the Metronome_mark_engraver
> works:
>
>   \paper {
>     \translator {
>       \ScoreContext
>       \remove Metronome_mark_engraver
>     }
>   }
>
> However, now I get annoying warnings:
>
>     /home/kili/lily/chaconne.ly:251:16: warning: Junking event:
>     `MetronomeChangeEvent':
>       | \tempo 4 = 7
>       5 <d f>16_.])
>
> is there any clean way to turn this warnings off, or perhaps a completely
> other way to change the tempo only for the MIDI output?
>
> Ciao,
> Kili