Hi, Try putting spacer grace notes in the other parts at the same point. See http://lists.gnu.org/archive/html/lilypond-user/2003-03/msg00238.html
I think it was first reported in 2002. See http://lists.gnu.org/archive/html/lilypond-devel/2002-05/msg00102.html Cheers, Bruce. On Fri, Jul 02, 2004 at 08:41:33PM +0200, Sean Reed wrote: > hi, > another midi question. i've checked the list archives but found no info > on the following: > > the midi output of my grace note groups is not accurate, although the > paper output is. within the midi, a segment of the duration of grace > note groups is being added into the playback actual time, resulting in > an offset of the voice within the midi file. ie: a 4-tone grace note > gesture within one voice of a score will result in that voice being off > by a 16th or more in the midi playback. > > is this a known issue? any hints? thanks. > best, > sean > ------------------------------------------ > Sean Reed > Web: www.seanreed.de > --------------- > i'm using mac os 10.3.4 and lilypond 2.2.3 > here are examples: > this creates the correct paper and midi output: > > notes1 = \notes { > \relative c'' { > \time 4/4 > \clef violin > \set Staff.midiInstrument = #"violin" > c8 \grace b16 d8 e4 f8 g8 a4 | > \grace b16 c,8 d8 e4 f g8 \grace b16 a8 | > r1 | > c,4 d e f | > } > } > > notes2 = \notes { > \relative c { > \clef bass > \set Staff.midiInstrument = #"acoustic grand" > c4 c c c > c c c c > r1 > c4 c c c > } > } > > \score { > << > \time 4/4 > \new Staff << > \notes1 >> > \new Staff << > \notes2 >> > >> > \midi { \tempo 4 = 60 } > \paper {} > } > > this does not: > > notes1 = \notes { > \relative c'' { > \time 4/4 > \clef violin > \set Staff.midiInstrument = #"violin" > c4 \grace {b16[ c]} d32 e d16 e4 f8 g8 a8 | > \grace b16 c,8 d4 e4 f8 g8 \grace b16 a8 | > r1 | > c,4 d4 e4 f4 | > } > } > > notes2 = \notes { > \relative c { > \clef bass > \set Staff.midiInstrument = #"acoustic grand" > c4 c c c > c c c c > r1 > c4 c c c > } > } > > \score { > << > \time 4/4 > \new Staff << > \notes1 >> > \new Staff << > \notes2 >> > >> > \midi { \tempo 4 = 60 } > \paper {} > } > > reducing the grace note duration value to 32nds remedies the problem in > the last example > (ie, line 6 becomes: c4 \grace {b32[ c]} d32 e d16 e4 f8 g8 a8 |) > > but no change of the grace note duration values provides a remedy in > this example: > notes1 = \notes { > \relative c'' { > \time 4/4 > \clef violin > \set Staff.midiInstrument = #"violin" > c,4 d8 e8 \grace {b64[ c d e]} f8 g8 a8 b8 | > c,8 d8 e8 f8 \grace b16 g8 a8 b4 | > r1 | > c,4 d4 e4 \grace b16 f'8 g8 | > } > } > > notes2 = \notes { > \relative c { > \clef bass > \set Staff.midiInstrument = #"acoustic grand" > c4 c c c > c c c c > r1 > c4 c c c > } > } > > \score { > << > \time 4/4 > \new Staff << > \notes1 >> > \new Staff << > \notes2 >> > >> > \midi { \tempo 4 = 60 } > \paper {} > } > _______________________________________________ > lilypond-user mailing list > [EMAIL PROTECTED] > http://lists.gnu.org/mailman/listinfo/lilypond-user _______________________________________________ lilypond-user mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/lilypond-user
