%% Generated by lilypond-book.py
%% Options: [indent=0\mm,verbatim,doctitle,alt=[image of music],texidoc,line-width=160\mm]
\include "lilypond-book-preamble.ly"


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% Start cut-&-pastable-section 
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\paper {
  #(define dump-extents #t)
  
  indent = 0\mm
  line-width = 160\mm
  force-assignment = #""
  line-width = #(- line-width (* mm  3.000000))
}

\layout {
  
}



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% ly snippet:
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\sourcefilename "changing-midi-output-to-one-channel-per-voice.ly"
\sourcefileline 0
%% Do not edit this file; it is auto-generated from LSR http://lsr.dsi.unimi.it
%% This file is in the public domain.
\version "2.11.57"

\header {
  lsrtags = "contexts-and-engravers, midi"

  texidoces = "
Al producir una salida MIDI, el comportamiento predeterminado es
que cada pentagrama representa un canal MIDI, con todas las voces
de dicho pentagrama mezcladas.  Esto reduce al mínimo el riesgo de
que se agote el número de canales MIDI disponibles, pues existe un
máximo de 16 canales por pista.

Sin embargo, cuando se traslada el interpretador
@code{Staff_performer} al contexto @code{Voice}, cada voz de un
pentagrama puede tener su propio canal MIDI, como se muestra en el
siguiente ejemplo: a pesar de estar sobre el mismo pentagrama, se
crean dos canales MIDI, cada uno con un @code{midiInstrument}
distinto.

"
  doctitlees = "Modificar la salida MIDI para que tenga un canal por cada voz"

  texidoc = "
When outputting MIDI, the default behavior is for each staff to
represent one MIDI channel, with all the voices on a staff amalgamated.
This minimizes the risk of running out of MIDI channels, since there
are only 16 available per track.

However, by moving the @code{Staff_performer} to the @code{Voice}
context, each voice on a staff can have its own MIDI channel, as is
demonstrated by the following example: despite being on the same staff,
two MIDI channels are created, each with a different
@code{midiInstrument}. 

"
  doctitle = "Changing MIDI output to one channel per voice"
} % begin verbatim
\score {
  \new Staff <<
    \new Voice \relative c''' {
      \set midiInstrument = #"flute"
      \voiceOne
      \key g \major
      \time 2/2
      r2 g-"Flute" ~
      g fis ~
      fis4 g8 fis e2 ~
      e4 d8 cis d2
    }
    \new Voice \relative c'' {
      \set midiInstrument = #"clarinet"
      \voiceTwo
      b1-"Clarinet"
      a2. b8 a
      g2. fis8 e
      fis2 r
    }
  >>
  \layout { }
  \midi {
    \context {
      \Staff
      \remove "Staff_performer"
    }
    \context {
      \Voice
      \consists "Staff_performer"      
    }
    \context {
      \Score
      tempoWholesPerMinute = #(ly:make-moment 72 2)
    }
  }
}



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% end ly snippet
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