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\include "lilypond-book-preamble.ly"


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#(ly:set-option 'eps-box-padding 3.000000)



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% ****************************************************************
% ly snippet:
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\sourcefilename "snippets/replacing-default-midi-instrument-equalization.ly"
\sourcefileline 0
%% DO NOT EDIT this file manually; it was automatically
%% generated from the LilyPond Wiki
%% (https://wiki.lilypond.community).
%%
%% Make any changes in the Wiki itself, or in
%% `Documentation/snippets/new/`, then run
%% `scripts/auxiliar/makelsr.pl`.
%%
%% This file is in the public domain.

\version "2.24.0"

\header {
%% Translation of GIT committish: f11513f36c131dab18338d6a3a729e24a927150d
  texidocja = "
デフォルトの MIDI 楽器の音量は @code{Score} コンテキストの
@code{instrumentEqualizer} プロパティをセットすることで置き換えることが@c
できます。セットするのは Scheme 関数で、音色名を引数で与えられた際に@c
その音色に対応する最小音量と最大音量 (音量は割合で指定) のペアを返すものです。

次の例は、それぞれフルートとクラリネットに対して最小音量を最大音量を@c
セットしています。
"

  doctitleja = "デフォルトの MIDI 楽器の音量を置き換える"

%% Translation of GIT committish: 2f3474d9af596d677ed5b7ce720ae4d0954a6b51
  texidocit = "
L'equalizzatore predefinito degli strumenti MIDI può essere modificato
impostando la proprietà @code{instrumentEqualizer} nel contesto @code{Score}
come una procedura Scheme definita dall'utente che usi il nome dello strumento
MIDI come argomento insieme a una coppia di frazioni indicanti i volumi
minimi e massimi da applicare a quello specifico strumento.

L'esempio seguente imposta i volumi massimo e minimo per il flauto e
per il clarintetto.

"
  doctitleit = "Modificare l'equalizzazione predefinita degli strumenti MIDI"


%% Translation of GIT committish: c043783aac6c35926d633aa2daf60ed4f2e7ca7a
  texidocfr = "
L'égaliseur basique peut être modifié par la définition d'une nouvelle
procédure Scheme @code{instrumentEqualizer} au sein du contexte
@code{Score}. Cette procédure prend en unique argument le nom d'un
instrument MIDI et renverra une paire de fractions correspondant aux
minimum et maximum de volume alloué à cet instrument.

Dans l'exemple suivant sont réglés les volumes relatifs de la flûte
et de la clarinette.
"

  doctitlefr = "Réglage de l'égalisation par défaut des instruments MIDI"

%% Translation of GIT committish: 70abecb938c2bb752967bd56b7402dd8129838a5
  texidoces = "
El ecualizador predeterminado de MIDI se puede sustituir fijando
la propiedad @code{instrumentEqualizer} en el contexto
@code{Score} a un procedimiento de Scheme definido por el usuario
que usa un nombre de instrumento MIDI como argumento junto a un
par de fracciones que indican los vloúmenes mínimo y máximo,
respectivamente, que aplicar a ese instrumento.

El ejemplo siguiente fija los volúmenes mínimo y máximo de la
flauta y el clarinete.

"
  doctitlees = "Reemplazo de la ecualización predeterminada de instrumentos MIDI"

  categories = "Midi, Scheme"

  texidoc = "
The default MIDI instrument equalizer can be replaced by setting the
@code{instrumentEqualizer} property in the @code{Score} context to a
user-defined Scheme procedure that uses a MIDI instrument name as its
argument along with a pair of fractions indicating the minimum and
maximum volumes, respectively, to be applied to that specific
instrument.

The following example sets the minimum and maximum volumes for flute
and clarinet.
"

  doctitle = "Replacing default MIDI instrument equalization"
} % begin verbatim


#(define my-instrument-equalizer-alist '())

#(set! my-instrument-equalizer-alist
  (append
    '(("flute" . (0.7 . 0.9))
      ("clarinet" . (0.3 . 0.6)))
    my-instrument-equalizer-alist))

#(define (my-instrument-equalizer s)
  (let ((entry (assoc s my-instrument-equalizer-alist)))
    (if entry
      (cdr entry))))

\score {
  <<
    \new Staff {
      \key g \major
      \time 2/2
      \set Score.instrumentEqualizer = #my-instrument-equalizer
      \set Staff.midiInstrument = "flute"
      \new Voice \relative {
        r2 g''\mp g fis~
        4 g8 fis e2~
        4 d8 cis d2
      }
    }
    \new Staff {
      \key g \major
      \set Staff.midiInstrument = "clarinet"
      \new Voice \relative {
        b'1\p a2. b8 a
        g2. fis8 e
        fis2 r
      }
    }
  >>
  \layout { }
  \midi {  }
}



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