space. We could place a measured timeline or graphic above or below
this example.
-The @code{proportionalNotationDuration} setting is a context setting that
-lives in @code{Score}. Recall that context settings appear in one of
-three locations in our input file -- in a @code{\with} block, in a
-@code{\context} block, or directly in music entry
-preceded by the @code{\set} command. As with all
-context settings, users can pick which of the three different
-locations they would like to set @code{proportionalNotationDuration}.
+The @code{proportionalNotationDuration} setting is a context setting
+that lives in @code{Score}. Remember that context settings can appear
+in one of three locations within our input file -- in a @code{\with}
+block, in a @code{\context} block, or directly in music entry preceded
+by the @code{\set} command. As with all context settings, users can
+pick which of the three different locations they would like to
+set @code{proportionalNotationDuration} in to.
The @code{proportionalNotationDuration} setting takes a single argument,
-which is the reference duration against which all music will be
-spaced. The LilyPond Scheme function make-moment takes two arguments
+which is the reference duration against that all music will be spaced.
+The LilyPond Scheme function @code{make-moment} takes two arguments
-- a numerator and denominator which together express some fraction of
-a whole note. The call @code{#(ly:make-moment 1 20)} therefore produces a
-reference duration of a twentieth note. The values
+a whole note. The call @code{#(ly:make-moment 1 20)} therefore produces
+a reference duration of a twentieth note. Values such as
@code{#(ly:make-moment 1 16)}, @code{#(ly:make-moment 1 8)}, and
@code{#(ly:make-moment 3 97)} are all possible as well.
How do we select the right reference duration to pass to
-@code{proportionalNotationDuration}? Usually by a process of trial and error,
-beginning with a duration close to the fastest (or smallest) duration
-in the piece. Smaller reference durations space music loosely; larger
-reference durations space music tightly.
+@code{proportionalNotationDuration}? Usually by a process of trial
+and error, beginning with a duration close to the fastest (or smallest)
+duration in the piece. Smaller reference durations space music loosely;
+larger reference durations space music tightly.
@lilypond[quote,verbatim,ragged-right]
-\new Score \with {
- proportionalNotationDuration = #(ly:make-moment 1 8)
-} <<
- \new RhythmicStaff {
- c'2
- c'16 c'16 c'16 c'16
- \times 4/5 {
- c'16 c'16 c'16 c'16 c'16
+\score {
+ <<
+ \new RhythmicStaff {
+ c'2
+ c'16 c'16 c'16 c'16
+ \times 4/5 {
+ c'16 c'16 c'16 c'16 c'16
+ }
+ }
+ >>
+ \layout {
+ \context {
+ \Score
+ proportionalNotationDuration = #(ly:make-moment 1 8)
}
}
->>
+}
-\new Score \with {
- proportionalNotationDuration = #(ly:make-moment 1 16)
-} <<
- \new RhythmicStaff {
- c'2
- c'16 c'16 c'16 c'16
- \times 4/5 {
- c'16 c'16 c'16 c'16 c'16
+\score {
+ <<
+ \new RhythmicStaff {
+ c'2
+ c'16 c'16 c'16 c'16
+ \times 4/5 {
+ c'16 c'16 c'16 c'16 c'16
+ }
+ }
+ >>
+ \layout {
+ \context {
+ \Score
+ proportionalNotationDuration = #(ly:make-moment 1 16)
}
}
->>
+}
-\new Score \with {
- proportionalNotationDuration = #(ly:make-moment 1 32)
-} <<
- \new RhythmicStaff {
- c'2
- c'16 c'16 c'16 c'16
- \times 4/5 {
- c'16 c'16 c'16 c'16 c'16
+\score {
+ <<
+ \new RhythmicStaff {
+ c'2
+ c'16 c'16 c'16 c'16
+ \times 4/5 {
+ c'16 c'16 c'16 c'16 c'16
+ }
+ }
+ >>
+ \layout {
+ \context {
+ \Score
+ proportionalNotationDuration = #(ly:make-moment 1 32)
}
}
->>
+}
@end lilypond
Note that too large a reference duration -- such as the eighth note,
above -- spaces music too tightly and can cause note head collisions.
-Note also that proportional notation in general takes up more
-horizontal space that does classical spacing. Proportional spacing
-provides rhythmic clarity at the expense of horizontal space.
+Also that proportional notation in general takes up more horizontal
+space than classical spacing. Proportional spacing provides rhythmic
+clarity at the expense of horizontal space.
Next we examine how to optimally space overlapping tuplets.
}
@end lilypond
-The spacing is bad because the evenly notes of the bottom staff do not
-stretch uniformly. Classical engraving includes very few complex
+The spacing is bad because the evenly spaced notes of the bottom staff
+do not stretch uniformly. Classical engravings include very few complex
triplets and so classical engraving rules can generate this type of
-result. Setting @code{proportionalNotationDuration} remedies this
-situation considerably.
+result. Setting @code{proportionalNotationDuration} fixes this.
@lilypond[quote,verbatim,ragged-right]
-\new Score \with {
- proportionalNotationDuration = #(ly:make-moment 1 20)
-} <<
- \new RhythmicStaff {
- c'2
- c'16 c'16 c'16 c'16
- \times 4/5 {
- c'16 c'16 c'16 c'16 c'16
+\score {
+ <<
+ \new RhythmicStaff {
+ c'2
+ c'16 c'16 c'16 c'16
+ \times 4/5 {
+ c'16 c'16 c'16 c'16 c'16
+ }
}
- }
- \new RhythmicStaff {
- \times 8/9 {
- c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8
+ \new RhythmicStaff {
+ \times 8/9 {
+ c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8
+ }
+ }
+ >>
+ \layout {
+ \context {
+ \Score
+ proportionalNotationDuration = #(ly:make-moment 1 20)
}
}
->>
+}
@end lilypond
But if we look very carefully we can see that notes of the second half
-of the 9-tuplet space ever so slightly more widely than do the notes
+of the 9-tuplet space ever so slightly more widely than the notes
of the first half of the 9-tuplet. To ensure uniform stretching, we
turn on @code{uniform-stretching}, which is a property of
@code{SpacingSpanner}.
@lilypond[quote,verbatim,ragged-right]
-\new Score \with {
- proportionalNotationDuration = #(ly:make-moment 1 20)
- \override SpacingSpanner #'uniform-stretching = ##t
-} <<
- \new RhythmicStaff {
- c'2
- c'16 c'16 c'16 c'16
- \times 4/5 {
- c'16 c'16 c'16 c'16 c'16
+\score {
+ <<
+ \new RhythmicStaff {
+ c'2
+ c'16 c'16 c'16 c'16
+ \times 4/5 {
+ c'16 c'16 c'16 c'16 c'16
+ }
}
- }
- \new RhythmicStaff {
- \times 8/9 {
- c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8
+ \new RhythmicStaff {
+ \times 8/9 {
+ c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8 c'8
+ }
+ }
+ >>
+ \layout {
+ \context {
+ \Score
+ proportionalNotationDuration = #(ly:make-moment 1 20)
+ \override SpacingSpanner #'uniform-stretching = ##t
}
}
->>
+}
@end lilypond
Our two-staff example now spaces exactly, our rhythmic
projects / lilypond.git / commitdiff