Guide, node Updating translation committishes..
@end ignore
-@c \version "2.15.18"
+@c \version "2.17.6"
@node Rhythms
@section Rhythms
@cindex scaling durations
@cindex durations, scaling
-You can alter the duration of single notes, rests or chords by a
+The duration of single notes, rests or chords may be multiplied by a
fraction @code{N/M} by appending @code{*N/M} (or @code{*N} if @code{M}
is 1) to the duration. This will not affect the appearance of the
notes or rests produced, but the altered duration will be used in
calculating the position within the measure and setting the duration
-in the MIDI output. Multiplying factors may be combined such as
-@code{*L*M/N}.
+in the MIDI output. Multiplying factors may be combined like
+@code{*L*M/N}. Factors are part of the duration: if a duration is
+not specified for subsequent notes, the default duration taken from
+the preceding note will include any scaling factor.
In the following example, the first three notes take up exactly
two beats, but no triplet bracket is printed.
@lilypond[quote,relative=2,verbatim]
\time 2/4
% Alter durations to triplets
-a4*2/3 gis4*2/3 a4*2/3
+a4*2/3 gis a
% Normal durations
-a4 a4
+a4 a
% Double the duration of chord
<a d>4*2
% Duration of quarter, appears like sixteenth
b16*4 c4
@end lilypond
-The duration of spacing notes may also be modified by
+The duration of spacer rests may also be modified by
a multiplier. This is useful for skipping many measures, e.g.,
@code{s1*23}.
same way, as if every note, chord or rest had the fraction as a
multiplier. This leaves the appearance of the music unchanged but
the internal duration of the notes will be multiplied by the
-fraction @emph{num}/@emph{den}. The spaces around the dot are
-required. Here is an example showing how music can be compressed
-and expanded:
+fraction @emph{num}/@emph{den}. Here is an example showing how music
+can be compressed and expanded:
@lilypond[quote,relative=2,verbatim]
\time 2/4
% Normal durations
<c a>4 c8 a
% Scale music by *2/3
-\scaleDurations #'(2 . 3) {
+\scaleDurations 2/3 {
<c a f>4. c8 a f
}
% Scale music by *2
-\scaleDurations #'(2 . 1) {
+\scaleDurations 2/1 {
<c' a>4 c8 b
}
@end lilypond
Snippets:
@rlsr{Rhythms}.
+@knownissues
+The calculation of the position within a measure must take into
+account all the scaling factors applied to the notes within that
+measure and any fractional carry-out from earlier measures. This
+calculation is carried out using rational numbers. If an intermediate
+numerator or denominator in that calculation exceeds 2^30 the
+execution and typesetting will stop at that point without indicating
+an error.
+
@node Ties
@unnumberedsubsubsec Ties
collide with other objects in a staff.
@lilypond[verbatim,quote,ragged-right,relative=2]
-\override Tie #'layer = #-2
-\override Staff.TimeSignature #'layer = #-1
-\override Staff.KeySignature #'layer = #-1
-\override Staff.TimeSignature #'whiteout = ##t
-\override Staff.KeySignature #'whiteout = ##t
+\override Tie.layer = #-2
+\override Staff.TimeSignature.layer = #-1
+\override Staff.KeySignature.layer = #-1
+\override Staff.TimeSignature.whiteout = ##t
+\override Staff.KeySignature.whiteout = ##t
b2 b~
\time 3/4
\key a \major
\new Staff {
% These two lines are just to prettify this example
\time 16/1
- \override Staff.TimeSignature #'stencil = ##f
+ \override Staff.TimeSignature.stencil = ##f
% Print a maxima rest, equal to four breves
r\maxima
% Print a longa rest, equal to two breves
@lilypond[quote,verbatim,relative=2]
% This fails, as the wrong object name is specified
-\override TextScript #'padding = #5
+\override TextScript.padding = #5
R1^"wrong"
% This is the correct object name to be specified
-\override MultiMeasureRestText #'padding = #5
+\override MultiMeasureRestText.padding = #5
R1^"right"
@end lilypond
@funindex \overrideTimeSignatureSettings
In addition to setting the printed time signature, the @code{\time}
-command also sets time-signature-based default values for the properties
-@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}. The
-predefined default values for these properties can be found in
-@file{scm/time-signature-settings.scm}. The existing default values can
-be changed, or new default values can be added:
+command also sets the values of the time-signature-based properties
+@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}.
+The predefined default values for these properties can be found in
+@file{scm/time-signature-settings.scm}.
+
+The default value of @code{beatStructure} can be overridden in the
+@code{\time} command itself by supplying it as the optional first
+argument:
+
+@lilypond[quote,verbatim]
+\score {
+ \new Staff {
+ \relative c' {
+ \time #'(2 2 3) 7/8
+ \repeat unfold 7 { c8 } |
+ \time #'(3 2 2) 7/8
+ \repeat unfold 7 { c8 } |
+ }
+ }
+}
+@end lilypond
+
+Alternatively, the default values of all these time-signature-based
+variables, including @code{baseMoment} and @code{beamExceptions},
+can be set together. The values can be set independently for several
+different time signatures. The new values take effect when a
+subsequent @code{\time} command with the same value of the time
+signature is executed:
@lilypond[quote,verbatim]
\score {
\new Staff {
\relative c' {
\overrideTimeSignatureSettings
- #'(4 . 4) % timeSignatureFraction
- #'(1 . 4) % baseMomentFraction
+ 4/4 % timeSignatureFraction
+ 1/4 % baseMomentFraction
#'(3 1) % beatStructure
#'() % beamExceptions
\time 4/4
@enumerate
@item
-@code{@var{timeSignatureFraction}}, a Scheme pair describing the
-time signature.
+@code{@var{timeSignatureFraction}}, a fraction describing the
+time signature to which these values apply.
@item
-@code{@var{baseMomentFraction}}, a Scheme pair containing the numerator
+@code{@var{baseMomentFraction}}, a fraction containing the numerator
and denominator of the basic timing unit for the time signature.
@item
\relative c' {
% This call will fail because the context isn't yet instantiated
\overrideTimeSignatureSettings
- #'(4 . 4) % timeSignatureFraction
- #'(1 . 4) % baseMomentFraction
+ 4/4 % timeSignatureFraction
+ 1/4 % baseMomentFraction
#'(3 1) % beatStructure
#'() % beamExceptions
\time 4/4
\repeat unfold 7 { c8 } |
% This call will succeed
\overrideTimeSignatureSettings
- #'(4 . 4) % timeSignatureFraction
- #'(1 . 4) % baseMomentFraction
+ 4/4 % timeSignatureFraction
+ 1/4 % baseMomentFraction
#'(3 1) % beatStructure
#'() % beamExceptions
\time 4/4
\relative c' {
\repeat unfold 8 { c8 } |
\overrideTimeSignatureSettings
- #'(4 . 4) % timeSignatureFraction
- #'(1 . 4) % baseMomentFraction
+ 4/4 % timeSignatureFraction
+ 1/4 % baseMomentFraction
#'(3 1) % beatStructure
#'() % beamExceptions
\time 4/4
\repeat unfold 8 { c8 } |
- \revertTimeSignatureSettings #'(4 . 4)
+ \revertTimeSignatureSettings 4/4
\time 4/4
\repeat unfold 8 { c8 } |
}
\new StaffGroup <<
\new Staff {
\overrideTimeSignatureSettings
- #'(4 . 4) % timeSignatureFraction
- #'(1 . 4) % baseMomentFraction
+ 4/4 % timeSignatureFraction
+ 1/4 % baseMomentFraction
#'(3 1) % beatStructure
#'() % beamExceptions
\time 4/4
}
\new Staff {
\overrideTimeSignatureSettings
- #'(4 . 4) % timeSignatureFraction
- #'(1 . 4) % baseMomentFraction
+ 4/4 % timeSignatureFraction
+ 1/4 % baseMomentFraction
#'(1 3) % beatStructure
#'() % beamExceptions
\time 4/4
}
@end lilypond
+A further method of changing these time-signature-related variables,
+which avoids reprinting the time signature at the time of the change,
+is shown in @ref{Setting automatic beam behavior}.
+
@predefined
@code{\numericTimeSignature},
@code{\defaultTimeSignature}.
Notation Reference:
@ref{Mensural time signatures},
+@ref{Setting automatic beam behavior},
@ref{Time administration}.
+Installed Files:
+@file{scm/time-signature-settings.scm}.
+
Snippets:
@rlsr{Rhythms}.
@lilypond[verbatim,relative=2,quote]
% Show all bar numbers
-\override Score.BarNumber #'break-visibility = #all-visible
+\override Score.BarNumber.break-visibility = #all-visible
c4 d e d
\cadenzaOn
c4 c d8[ d d] f4 g4.
Polymetric notation is supported explicitly or by manually modifying the
visible time signature symbol and/or scaling note durations.
-@subsubheading Different time signatures with equal-length measures
+@subsubsubheading Different time signatures with equal-length measures
Set a common time signature for each staff, and set the
@code{timeSignatureFraction} to the desired fraction. Then use the
}
\new Staff {
\time 3/4
- \set Staff.timeSignatureFraction = #'(9 . 8)
- \scaleDurations #'(2 . 3)
+ \set Staff.timeSignatureFraction = 9/8
+ \scaleDurations 2/3
\repeat unfold 6 { c8[ c c] }
}
\new Staff {
\time 3/4
- \set Staff.timeSignatureFraction = #'(10 . 8)
- \scaleDurations #'(3 . 5) {
+ \set Staff.timeSignatureFraction = 10/8
+ \scaleDurations 3/5 {
\repeat unfold 2 { c8[ c c] }
\repeat unfold 2 { c8[ c] } |
c4. c \times 2/3 { c8[ c c] } c4
>>
@end lilypond
-@subsubheading Different time signatures with unequal-length measures
+@subsubsubheading Different time signatures with unequal-length measures
Each staff can be given its own independent time signature by
moving the @code{Timing_translator} and the
@cindex compound time signatures
@cindex time signature, compound
-@subsubheading Compound time signatures
+@subsubsubheading Compound time signatures
These are created using the @code{\compoundMeter} function. The syntax
for this is:
}
}
\new Voice \with {
- \consists Pitch_squash_engraver
+ \consists "Pitch_squash_engraver"
} \relative c'' {
\improvisationOn
c4 c8 c c4 c8 c
@funindex \set
@funindex set
+When automatic beaming is enabled, the placement of automatic beams
+is determined by three context properties:
+@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}.
+The default values of these variables may be overridden as described
+below, or alternatively the default values themselves may be changed
+as explained in @ref{Time signature}.
+
+If a @code{beamExceptions} rule is defined for the time signature in
+force, that rule is used to determine the beam placement. If no
+@code{beamExceptions} rule is defined for the time signature in force,
+the beam placement is determined by the settings of @code{baseMoment}
+and @code{beatStructure}.
+
+By default, @code{beamExceptions} rules are defined for most common
+time signatures, so the @code{beamException} rules must be disabled
+if automatic beaming is to be based on @code{baseMoment} and
+@code{beatStructure}. The @code{beamExceptions} rules are disabled
+by
+
+@example
+\set Timing.beamExceptions = #'()
+@end example
+
+
+@subsubsubheading Beaming based on @code{baseMoment} and @code{beatStructure}
+
In most instances, automatic beams will end at the end of a beat.
The ending points for beats are determined by the context properties
@code{baseMoment} and @code{beatStructure}. @code{beatStructure}
is a scheme list that defines the length of each beat in the measure
in units of @code{baseMoment}. By default, @code{baseMoment} is
-the one over numerator of the time signature. By default,
+one over the denominator of the time signature. By default,
each unit of length @code{baseMoment} is a single beat.
@lilypond[quote,relative=2,verbatim]
c16^"(3+2)" c c c c |
@end lilypond
+If a common time signature is being used, @code{beamExceptions}
+@emph{must} be disabled to enable @code{beatStructure} to work.
+The @code{\set Timing.beamExceptions = #'()} command can always
+be included if beaming is being determined by @code{beatStructure}.
+
+@lilypond[quote,relative=2,verbatim]
+\time 4/4
+a8^"default" a a a a a a a
+
+\set Timing.baseMoment = #(ly:make-moment 1 4)
+\set Timing.beatStructure = #'(1 1 1 1)
+a8^"no change" a a a a a a a
+
+\set Timing.beamExceptions = #'()
+\set Timing.baseMoment = #(ly:make-moment 1 4)
+\set Timing.beatStructure = #'(1 1 1 1)
+a8^"changed" a a a a a a a
+@end lilypond
+
Beam setting changes can be limited to specific contexts. If no
setting is included in a lower-level context, the setting of the
enclosing context will apply.
the time signature. Any exceptions to this default can be found in
@file{scm/time-signature-settings.scm}.
+@subsubsubheading Beaming based on @code{beamExceptions}
+
Special autobeaming rules (other than ending a beam on a beat)
are defined in the @code{beamExceptions} property.
\repeat unfold 8 {c8}
@end lilypond
-In traditional engraving, eighth notes can have special beaming rules.
-A measure consisting of only eighth notes can be beamed in one. This rule is
-controlled by the context property @code{beamWholeMeasure}:
+In a similar fashion, eighth notes in 3/4 time are beamed as a full
+measure by default. To beam eighth notes in 3/4 time on the beat,
+reset @code{beamExceptions}.
@lilypond[quote,verbatim,relative=2]
\time 3/4
-% By default we beam in one
-\repeat unfold 6 { a8 }
-% We can avoid beaming in one
-\set Timing.beamWholeMeasure = ##f
-\repeat unfold 6 { a8 }
+% by default we beam in (6) due to beamExceptions
+\repeat unfold 6 {a8} |
+% This will beam (1 1 1) due to beatLength
+\set Timing.beamExceptions = #'()
+\repeat unfold 6 {a8}
@end lilypond
-In some engraving from the Romantic and Classical periods,
-a half-measure of eighth notes can be beamed
-together even though this violates the general rule (see Gould, p. 153).
-This behavior is controlled by the context property @code{beamHalfMeasure}:
+In engraving from the Romantic and Classical periods,
+beams often begin midway through the measure in 3/4 time,
+but modern practice is to avoid the false impression of 6/8 time
+(see Gould, p. 153). Similar situations arise in 3/8 time.
+This behavior is controlled by the context property @code{beamHalfMeasure},
+which has effect only in time signatures with 3 in the numerator:
@lilypond[quote,verbatim,relative=2]
\time 3/4
-% By default we avoid half-measure beams
r4. a8 a a |
-% We can allow half-measure beams
-\set Timing.beamHalfMeasure = ##t
+\set Timing.beamHalfMeasure = ##f
r4. a8 a a |
@end lilypond
-@i{@strong{How automatic beaming works}}
+@subsubsubheading How automatic beaming works
When automatic beaming is enabled, the placement of automatic beams
is determined by the context properties
{beam-endings-in-score-context.ly}
@seealso
+Notation Reference:
+@ref{Time signature}.
+
Installed Files:
-@file{scm/beam-settings.scm}.
+@file{scm/time-signature-settings.scm}.
Snippets:
@rlsr{Rhythms}.
<<
\new Staff {
\overrideTimeSignatureSettings
- #'(3 . 4) % timeSignatureFraction
- #'(1 . 8) % baseMomentFraction
+ 3/4 % timeSignatureFraction
+ 1/8 % baseMomentFraction
#'(1 5) % beatStructure
#'() % beamExceptions
\time 3/4
the last four 32nd notes are at a constant tempo.
@lilypond[relative=1,verbatim,quote]
-\override Beam #'grow-direction = #LEFT
+\override Beam.grow-direction = #LEFT
\featherDurations #(ly:make-moment 2 1)
{ c16[ c c c c c c c] }
-\override Beam #'grow-direction = #RIGHT
+\override Beam.grow-direction = #RIGHT
\featherDurations #(ly:make-moment 2 3)
{ c32[ d e f] }
% revert to non-feathered beams
-\override Beam #'grow-direction = #'()
+\override Beam.grow-direction = #'()
{ g32[ a b c] }
@end lilypond
f1 \bar "."
g1 \bar "||"
a1 \bar ".|"
-b1 \bar ".|."
+b1 \bar ".."
c1 \bar "|.|"
d1 \bar "|."
e1
together with dotted and dashed bar lines:
@lilypond[quote,relative=1,verbatim]
-f1 \bar ":"
-g1 \bar "dashed"
+f1 \bar ";"
+g1 \bar "!"
a1
@end lilypond
@noindent
-and five types of repeat bar line:
+and nine types of repeat bar lines:
@lilypond[quote,relative=1,verbatim]
-f1 \bar "|:"
-g1 \bar ":|:"
+f1 \bar ".|:"
+g1 \bar ":..:"
a1 \bar ":|.|:"
b1 \bar ":|.:"
-c1 \bar ":|"
-e1
+c1 \bar ":.|.:"
+d1 \bar "[|:"
+e1 \bar ":|][|:"
+f1 \bar ":|]"
+g1 \bar ":|."
+a1
@end lilypond
Additionally, a bar line can be printed as a simple tick:
preferable to use @code{\divisioMinima} there instead, described in
the section @ref{Divisiones} in Gregorian chant.
+Lilypond supports kievan notation and provides a special kievan
+bar line:
+@lilypond[quote,relative=1,verbatim]
+f1 \bar "k"
+@end lilypond
+Further details of this notation are explained in
+@ref{Typesetting Kievan square notation}.
+
@cindex segno
For in-line segno signs, there are three types of bar lines which
c4 c c c \break
\bar "S"
c4 c c c
-\bar "|S"
+\bar "S-|"
c4 c c c \break
-\bar "|S"
+\bar "S-|"
c4 c c c
-\bar "S|"
+\bar "S-S"
c4 c c c \break
-\bar "S|"
+\bar "S-S"
c1
@end lilypond
using the various repeat commands (see @ref{Repeats}), which
automatically print the appropriate bar lines.
-In addition, you can specify @code{"||:"}, which is equivalent to
-@code{"|:"} except at line breaks, where it gives a double bar
+In addition, you can specify @code{".|:-||"}, which is equivalent to
+@code{".|:"} except at line breaks, where it gives a double bar
line at the end of the line and a start repeat at the beginning of
the next line.
@lilypond[quote,relative=2,verbatim]
c4 c c c
-\bar "||:"
+\bar ".|:-||"
c4 c c c \break
-\bar "||:"
+\bar ".|:-||"
c4 c c c
@end lilypond
@lilypond[quote,relative=2,verbatim]
c4 c c c
-\bar ":|S"
+\bar ":|.S"
c4 c c c \break
-\bar ":|S"
+\bar ":|.S"
c4 c c c
-\bar ":|S."
+\bar ":|.S-S"
c4 c c c \break
-\bar ":|S."
+\bar ":|.S-S"
c4 c c c
-\bar "S|:"
+\bar "S.|:-S"
c4 c c c \break
-\bar "S|:"
+\bar "S.|:-S"
c4 c c c
-\bar ".S|:"
+\bar "S.|:"
c4 c c c \break
-\bar ".S|:"
+\bar "S.|:"
c4 c c c
-\bar ":|S|:"
+\bar ":|.S.|:"
c4 c c c \break
-\bar ":|S|:"
+\bar ":|.S.|:"
c4 c c c
-\bar ":|S.|:"
+\bar ":|.S.|:-S"
c4 c c c \break
-\bar ":|S.|:"
+\bar ":|.S.|:-S"
c1
@end lilypond
+Additionally there is an @code{\inStaffSegno} command which
+creates a segno bar, placed in cooperation
+with the @code{\repeat volta} command.
+
+@funindex \defineBarLine
+@funindex defineBarLine
+@cindex bar lines, defining
+@cindex defining bar lines
+
+New bar line types can be defined with @code{\defineBarLine}:
+
+@example
+\defineBarLine @var{bartype} #'(@var{end} @var{begin} @var{span})
+@end example
+
+The @code{\defineBarline} variables can include the
+@q{empty} string @code{""}, which is equivalent to an invisible
+bar line being printed. Or they can be set to @code{#f} which
+prints no bar line at all.
+
+After the definiton, the new bar line can be used by
+@code{\bar} @var{bartype}.
+
+There are currently ten bar line elements available:
+
+@lilypond[quote,verbatim]
+\defineBarLine ":" #'("" ":" "")
+\defineBarLine "=" #'("=" "" "")
+\defineBarLine "[" #'("" "[" "")
+\defineBarLine "]" #'("]" "" "")
+
+\new Staff {
+ s1 \bar "|"
+ s1 \bar "."
+ s1 \bar "!"
+ s1 \bar ";"
+ s1 \bar ":"
+ s1 \bar "k"
+ s1 \bar "S"
+ s1 \bar "="
+ s1 \bar "["
+ s1 \bar "]"
+ s1 \bar ""
+}
+@end lilypond
+
+The @code{"="} bar line provides the double span bar line, used
+in combination with the segno sign. Do not use it as a standalone
+double thin bar line; here, @code{\bar} @var{"||"} is
+preferred.
+
+The @code{"-"} sign starts annotations to bar lines which
+are useful to distinguish those with identical appearance
+but different behavior at line breaks and/or different span bars.
+The part following the @code{"-"} sign is not used for building up
+the bar line.
+
+@lilypond[quote,relative=2,verbatim]
+\defineBarLine "||-dashedSpan" #'("||" "" "!!")
+
+\new StaffGroup <<
+ \new Staff {
+ c1 \bar "||"
+ c1 \bar "||-dashedSpan"
+ c1
+ }
+ \new Staff {
+ c1
+ c1
+ c1
+ }
+>>
+@end lilypond
+
+Furthermore, the space character @code{" "} serves as a placeholder
+for defining span bars correctly aligned to the main bar lines:
+
+@lilypond[quote,relative=2,verbatim]
+\defineBarLine ":|.-wrong" #'(":|." "" "|.")
+\defineBarLine ":|.-right" #'(":|." "" " |.")
+
+\new StaffGroup <<
+ \new Staff {
+ c1 \bar ":|.-wrong"
+ c1 \bar ":|.-right"
+ c1
+ }
+ \new Staff {
+ c1
+ c1
+ c1
+ }
+>>
+@end lilypond
+
+If additional elements are needed, LilyPond provides a simple
+way to define them. For more informations on modifying or adding
+bar lines, see file @file{scm/bar-line.scm}.
In scores with many staves, a @code{\bar} command in one staff is
automatically applied to all staves. The resulting bar lines are
@cindex default bar lines, changing
@cindex bar lines, default, changing
-@snippets
-
@funindex whichBar
@funindex defaultBarType
@funindex \bar
@ref{Repeats},
@ref{Grouping staves}.
+Installed Files:
+@file{scm/bar-line.scm}.
+
Snippets:
@rlsr{Rhythms}.
example bar numbers are printed at all possible places:
@lilypond[verbatim,quote,relative=1]
-\override Score.BarNumber #'break-visibility = #'#(#t #t #t)
+\override Score.BarNumber.break-visibility = ##(#t #t #t)
\set Score.currentBarNumber = #11
% Permit first bar number to be printed
\bar ""
@lilypond[quote,relative=2,verbatim]
<<
- \new Staff { e4 \bar "|:" \grace c16 d2. }
- \new Staff { c4 \bar "|:" d2. }
+ \new Staff { e4 \bar ".|:" \grace c16 d2. }
+ \new Staff { c4 \bar ".|:" d2. }
>>
@end lilypond
@lilypond[quote,relative=2,verbatim]
<<
- \new Staff { e4 \bar "|:" \grace c16 d2. }
- \new Staff { c4 \bar "|:" \grace s16 d2. }
+ \new Staff { e4 \bar ".|:" \grace c16 d2. }
+ \new Staff { c4 \bar ".|:" \grace s16 d2. }
>>
@end lilypond
Or explicitly change the musical duration:
@example
-\acciaccatura @{ \scaleDurations #' (1 . 2) @{ c'8[ d' e' f' g'] @} @}
+\acciaccatura @{ \scaleDurations 1/2 @{ c'8[ d' e' f' g'] @} @}
@end example
See @ref{Scaling durations}.
\MyCadenza c'1
}
\new Staff {
- $(mmrest-of-length MyCadenza)
+ #(mmrest-of-length MyCadenza)
c'1
- $(skip-of-length MyCadenza)
+ #(skip-of-length MyCadenza)
c'1
}
>>
projects / lilypond.git / blobdiff