-%% Do not edit this file; it is auto-generated from LSR!
-%% Tags: pitches
-\version "2.11.35"
-
-\header { texidoc = "
-There is a way to enforce enharmonic modifications for notes in order
-to have the minimum number of accidentals. In that case, ``Double
-accidentals should be removed, as well as E-sharp (-> F), bC (-> B), bF
-(-> E), B-sharp (-> C).'', as proposed by a request for a new feature.
-In this manner, the most natural enharmonic notes are chosen in this
-example.
-" }
-% begin verbatim
-#(define (naturalise-pitch p)
+%% Do not edit this file; it is auto-generated from input/new
+%% This file is in the public domain.
+\version "2.11.62"
+\header {
+doctitlees = "Transportar música con el menor número de alteraciones"
+texidoces = "
+Este ejemplo utiliza código de Scheme para forzar las
+modificaciones enarmónicas de las notas, y así tener el menor
+número de alteraciones accidentales. En este caso se aplican las
+siguientes reglas:
+
+@itemize
+@item
+Se quitan las dobles alteraciones
+
+@item
+Si sostenido -> Do
+
+@item
+Mi sistenido -> Fa
+
+@item
+Do bemol -> Si
+
+@item
+Fa bemol -> Mi
+
+@end itemize
+
+De esta forma se selecciona el mayor número de notas enarmónicas
+naturales.
+
+"
+
+doctitlede = "Noten mit minimaler Anzahl an Versetzungszeichen transponieren."
+
+texidocde = "Dieses Beispiel benutzt Scheme-Code, um enharmonische
+Verwechslungen für Noten zu erzwingen, damit nur eine minimale Anzahl
+an Versetzungszeichen ausgegeben wird. In diesem Fall gelten die
+folgenden Regeln:
+
+@itemize
+@item
+Doppelte Versetzungszeichen sollen entfernt werden
+
+@item
+His -> C
+
+@item
+Eis -> F
+
+@item
+Ces -> B
+
+@item
+Fes -> E
+
+@end itemize
+
+Auf diese Art werden am meisten natürliche Tonhöhen als enharmonische
+Variante gewählt.
+"
+
+
+ lsrtags = "pitches"
+ texidoc = "This example uses some Scheme code to enforce enharmonic
+modifications for notes in order to have the minimum number of
+accidentals. In this case, the following rules apply:
+
+@itemize
+@item
+Double accidentals should be removed
+
+@item
+B sharp -> C
+
+@item
+E sharp -> F
+
+@item
+C flat -> B
+
+@item
+F flat -> E
+
+@end itemize
+
+In this manner, the most natural enharmonic notes are chosen.
+"
+ doctitle = "Transposing music with minimum accidentals"
+} % begin verbatim
+
+
+#(define (naturalize-pitch p)
(let* ((o (ly:pitch-octave p))
- (a (ly:pitch-alteration p))
+ (a (* 4 (ly:pitch-alteration p)))
+ ; alteration, a, in quarter tone steps, for historical reasons
(n (ly:pitch-notename p)))
-
(cond
((and (> a 1) (or (eq? n 6) (eq? n 2)))
(set! a (- a 2))
((and (< a -1) (or (eq? n 0) (eq? n 3)))
(set! a (+ a 2))
(set! n (- n 1))))
-
(cond
((> a 2) (set! a (- a 4)) (set! n (+ n 1)))
((< a -2) (set! a (+ a 4)) (set! n (- n 1))))
+ (if (< n 0) (begin (set! o (- o 1)) (set! n (+ n 7))))
+ (if (> n 6) (begin (set! o (+ o 1)) (set! n (- n 7))))
+ (ly:make-pitch o n (/ a 4))))
- (if (< n 0) (begin (set! o (- o 1)) (set! n (+ n 7))))
- (if (> n 6) (begin (set! o (+ o 1)) (set! n (- n 7))))
-
- (ly:make-pitch o n a)))
-
-#(define (naturalise music)
+#(define (naturalize music)
(let* ((es (ly:music-property music 'elements))
(e (ly:music-property music 'element))
(p (ly:music-property music 'pitch)))
-
(if (pair? es)
(ly:music-set-property!
music 'elements
- (map (lambda (x) (naturalise x)) es)))
-
+ (map (lambda (x) (naturalize x)) es)))
(if (ly:music? e)
(ly:music-set-property!
music 'element
- (naturalise e)))
-
+ (naturalize e)))
(if (ly:pitch? p)
(begin
- (set! p (naturalise-pitch p))
+ (set! p (naturalize-pitch p))
(ly:music-set-property! music 'pitch p)))
-
music))
-music = \relative c' { c4 d e f g a b c }
-
-naturaliseMusic =
+naturalizeMusic =
#(define-music-function (parser location m)
(ly:music?)
- (naturalise m))
+ (naturalize m))
+
+music = \relative c' { c4 d e g }
\score {
- \context Staff {
- \transpose c ais \music
- \naturaliseMusic \transpose c ais \music
- \transpose c deses \music
- \naturaliseMusic \transpose c deses \music
+ \new Staff {
+ \transpose c ais { \music }
+ \naturalizeMusic \transpose c ais { \music }
+ \transpose c deses { \music }
+ \naturalizeMusic \transpose c deses { \music }
}
- \layout { ragged-right = ##t}
+ \layout { }
}
-
-