Issue 2006 in lilypond: MIDI volume goes beyond maximum after staff change

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Other

New issue 2006 by address@hidden: MIDI volume goes beyond maximum after  
staff change
http://code.google.com/p/lilypond/issues/detail?id=2006

As suggested the in thread "MIDI dynamics doesn't apply to multi-voice
measures", I converted the score to explicit voices.  I used hidden
dynamic in the beginning of each voice so that the MIDI loudness would
be controlled by midiMaximumVolume.

In two places,
the voice is moved temporarily to the lower staff to keep the beams
connected, as in the original score. In those paces, the loudness
exceeds the limit. The first occurrence is after the word "wonder", or
just after 1 minute 25 seconds from the beginning.

The attached file uses midiMaximumVolume 0.5, which should be
enough to hear the problem.  You can set midiMaximumVolume to a lower
value to make the problem even more obvious, just be sure not to crank
up the volume too high while listening.


Here's an example of wrong volume after staff change:

\version "2.14.2"
\score {
 \new PianoStaff \with {
   midiMaximumVolume = #0.1
 } <<
   \new Staff = "rh" { b8 \p \change Staff="lh" b8 }
   \new Staff = "lh" { s4 }
 >>
 \midi { }
}

And following is an example of wrong volume in temporary voices:

\version "2.14.2"
\score {
 \new Staff \with {
   midiMaximumVolume = #0.1
 } { g8 \p << g8 \\ c8 >> }
 \midi { }
}

Both the first and the second voice are wrongly loud, as it's easy to
hear the perfect fifth.


Attachments:
        sure_on.ly  6.3 KB