Re: Some Midi Output Problems

[Trevor Daniels]

You're right (I think), I can't make dynamics work in the ChordMode context 
either.

However, if all you want to do is to silent the chords you can try removing 
the Note_performer, like this:

 \midi {
   \context {
     \ChordNameVoice
     \remove Note_performer
   }
 }


Writing a music function is described in Section 6.1 of the 2.11 docs.  Be 
prepared for a long haul, though :)  The example in 6.3.3 shows the sort of 
thing you might need.

Trevor

----- Original Message ----- 
From: "grick" <address@hidden>
To: "Trevor Daniels" <address@hidden>
Cc: <address@hidden>
Sent: Thursday, July 10, 2008 6:41 PM
Subject: Re: Some Midi Output Problems



> You can reduce the volume of the default piano in the same way, by
> setting
> midiMinimumVolume and midiMaximumVolume in the piano staff. Note,
> though,
> that these controls only take effect on encountering a dynamic mark,
> so be
> sure you have a mark at the beginning of the piano notes.

There is no piano staff, only a chordmode section (something like this):
--
Accordi = \chordmode
{
 \repeat unfold 60 {
   f2:9+ bes2:7
 }

 \repeat unfold 2 {
   f1
   f1
   ees1
   ees1
 }
}
--
Nor "\set Staff.midiXVolume" nor "\ppp" on chords (like f1\ppp) works.

Just to know this chordmode section is included in the staff this way:
--
\score {
 \new StaffGroup
 <<
   \new ChordNames {
     \set chordChanges = ##t
     \Accordi
   }
   \new Staff << \WithChords \global \Tromba >>
   \new Staff << \WithChords \global \Alto >>
   \new Staff << \WithChords \global \Tenore >>
   \new Staff << \WithChords \global \Baritono >>
 >>
 \layout { }
}
--

> BTW, an easier way may be to simply use quieter dynamic marks on the
> music
> of the instruments you want to reduce - these also affect the MIDI
> volume.

The "Control MIDI" dynamic marks are printed in the sheet (and, by the
way, i have to replace the real dynamics). I want to avoid this.

> > To do this i use often "staccato" notes (a4-. a4-. a4-. a4-.).
> >
> > I expect my midi output sound like (a8 r8 a8 r8 a8 r8 a8 r8) but
> sadly it
> > does not interpret them at all and sound like a simple (a4 a4 a4
> a4).
> >
> > I can simple write (a8 r8) version everywhere but the sheet become
> really
> > difficult to read for the performers.
> >
> > Is there a way to avoid to mantain a double version of the sheets?
> (one
> > for the performers with a4-. version and one for the midi output
> with a8
> > r8 one?)
>
> Sorry, apart from using separate versions I don't know how to do this
> other
> than by writing a Scheme procedure to add the staccato marks in the
> midi
> \score block.

Can you point me to some docs about this Scheme procedures? Something
specific for lilypond i found a general intro on the guile site.

> Trevor
Thank you Trevor for the answers!