input/lsr/changing-midi-output-to-one-channel-per-voice.ly

   1 %% Do not edit this file; it is auto-generated from LSR http://lsr.dsi.unimi.it
   2 %% This file is in the public domain.
   3 \version "2.11.49"
   4
   5 \header {
   6   lsrtags = "contexts-and-engravers, midi"
   7
   8   texidoc = "
   9 When outputting MIDI, the default behavior is for each staff to
  10 represent one MIDI channel, with all the voices on a staff amalgamated.
  11 This minimizes the risk of running out of MIDI channels, since there
  12 are only 16 available per track.
  13
  14 However, by moving the @code{Staff_performer} to the @code{Voice}
  15 context, each voice on a staff can have its own MIDI channel, as is
  16 demonstrated by the following example: despite being on the same staff,
  17 two MIDI channels are created, each with a different
  18 @code{midiInstrument}.
  19
  20 "
  21   doctitle = "Changing MIDI output to one channel per voice"
  22 } % begin verbatim
  23 \score {
  24   \new Staff <<
  25     \new Voice \relative c''' {
  26       \set midiInstrument = #"flute"
  27       \voiceOne
  28       \key g \major
  29       \time 2/2
  30       r2 g-"Flute" ~
  31       g fis ~
  32       fis4 g8 fis e2 ~
  33       e4 d8 cis d2
  34     }
  35     \new Voice \relative c'' {
  36       \set midiInstrument = #"clarinet"
  37       \voiceTwo
  38       b1-"Clarinet"
  39       a2. b8 a
  40       g2. fis8 e
  41       fis2 r
  42     }
  43   >>
  44   \layout { }
  45   \midi {
  46     \context {
  47       \Staff
  48       \remove "Staff_performer"
  49     }
  50     \context {
  51       \Voice
  52       \consists "Staff_performer"
  53     }
  54     \context {
  55       \Score
  56       tempoWholesPerMinute = #(ly:make-moment 72 2)
  57     }
  58   }
  59 }