Translation of GIT committish: FILL-IN-HEAD-COMMITTISH
When revising a translation, copy the HEAD committish of the
- version that you are working on. See TRANSLATION for details.
+ version that you are working on. For details, see the Contributors'
+ Guide, node Updating translation committishes..
@end ignore
-@c \version "2.12.0"
+@c \version "2.13.36"
@node Rhythms
@section Rhythms
@endpredefined
+@snippets
+
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
+{changing-the-number-of-augmentation-dots-per-note.ly}
+
+
@seealso
Music Glossary:
@rglos{breve},
@end example
@noindent
-The duration of @var{music} will be multiplied by the
+The duration of @code{@var{music}} will be multiplied by the
fraction. The fraction's denominator will be printed over or
under the notes, optionally with a bracket. The most common
tuplet is the triplet in which 3 notes have the duration of 2, so
@lilypond[quote,verbatim,relative=2]
\autoBeamOff
-c4 \times 4/5 { f8 e f \times 2/3 { e[ f g] } } f4 |
+c4 \times 4/5 { f8 e f \times 2/3 { e[ f g] } } f4
@end lilypond
Modifying nested tuplets which begin at the same musical moment
@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{non-default-tuplet-numbers.ly}
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
+{controlling-tuplet-bracket-visibility.ly}
+
@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{permitting-line-breaks-within-beamed-tuplets.ly}
@cindex grace notes within tuplet brackets
@knownissues
-When the first note on a staff is a grace note followed by a
-tuplet the grace note must be placed before the @code{\times}
-command to avoid errors. Anywhere else, grace notes may be
-placed within tuplet brackets.
+Grace notes may be placed within tuplet brackets, @emph{except}
+when a staff begins with a grace note followed by a tuplet. In this
+particular case, the grace note must be placed before the @code{\times}
+command to avoid errors.
+
+@cindex tempo marks within tuplet brackets
+
+When using a tuplet at the beginning of a piece with a @code{\tempo}
+mark, the music must be explicitly entered in a @code{\new Voice}
+block, as discussed in @rlearning{Voices contain music}.
@node Scaling durations
b16*4 c4
@end lilypond
-The duration of skip or spacing notes may also be modified by
+The duration of spacing notes may also be modified by
a multiplier. This is useful for skipping many measures, e.g.,
@code{s1*23}.
@knownissues
-
Switching staves when a tie is active will not produce a slanted
tie.
@funindex breve
Rests are entered like notes with the note name @code{r}.
-Durations longer than a whole rest use the predefined
-commands shown:
+Durations longer than a whole rest use the following predefined
+commands:
@c \time 16/1 is used to avoid spurious bar lines
@c and long tracts of empty measures
-@lilypond[fragment,quote,verbatim]
+@lilypond[quote,verbatim,relative=2]
\new Staff {
% These two lines are just to prettify this example
\time 16/1
Whole measure rests, centered in the middle of the measure, must be
entered as multi-measure rests. They can be used for a single
-measure as well as many measures and are discussed in @ref{Full
-measure rests}.
+measure as well as many measures and are discussed in
+@ref{Full measure rests}.
@cindex rest, specifying vertical position
@cindex lyrics, skip
Spacer rests are available only in note mode and chord mode. In
-other situations, for example, when entering lyrics, @code{\skip}
-is used to skip a musical moment. @code{\skip} requires an
-explicit duration.
+other situations, for example, when entering lyrics, the
+command @code{\skip} is used to skip a musical moment.
+@code{\skip} requires an explicit duration, but this is ignored if
+the lyrics derive their durations from the notes in an associated
+melody through @code{\addlyrics} or @code{\lyricsto}.
@lilypond[quote,verbatim,relative=2]
<<
>>
@end lilypond
+Because @code{\skip} is a command, it does not affect the default
+durations of following notes, unlike@tie{}@code{s}.
+
+@lilypond[quote,verbatim,relative=2]
+<<
+ {
+ \repeat unfold 8 { a4 }
+ }
+ {
+ a4 \skip 2 a |
+ s2 a
+ }
+>>
+@end lilypond
+
+
A spacer rest implicitly causes @code{Staff} and @code{Voice}
contexts to be created if none exist, just like notes and rests
do:
-@lilypond[quote,verbatim,fragment]
+@lilypond[quote,verbatim,relative=2]
s1 s s
@end lilypond
@code{\skip} simply skips musical time; it creates no output of
any kind.
-@lilypond[quote,verbatim,fragment]
+@lilypond[quote,verbatim,relative=2]
% This is valid input, but does nothing
\skip 1 \skip1 \skip 1
@end lilypond
Snippets:
@rlsr{Rhythms}.
-Internals Reference:
+Internals Reference:
@rinternals{SkipMusic}.
always be an integral number of measure-lengths, so augmentation dots
or fractions must often be used:
-@lilypond[quote,fragment,verbatim]
+@lilypond[quote,verbatim,relative=2]
\compressFullBarRests
\time 2/4
R1 | R2 |
A full-measure rest is printed as either a whole or breve rest,
centered in the measure, depending on the time signature.
-@lilypond[quote,verbatim,fragment]
+@lilypond[quote,verbatim,relative=2]
\time 4/4
R1 |
\time 6/4
rest can be shown as a single measure containing a multi-measure rest
symbol, with the number of measures of rest printed above the measure:
-@lilypond[quote,fragment,verbatim]
+@lilypond[quote,verbatim,relative=2]
% Default behavior
\time 3/4 r2. | R2.*2 |
\time 2/4 R2 |
The predefined command @code{\fermataMarkup}
is provided for adding fermatas.
-@lilypond[quote,verbatim,fragment]
+@lilypond[quote,verbatim,relative=2]
\compressFullBarRests
\time 3/4
R2.*10^\markup { \italic "ad lib." }
R2.^\fermataMarkup
@end lilypond
-@warning{
-Markups attached to a multi-measure rest are
-objects of type @code{MultiMeasureRestText}, not
-@code{TextScript}. Overrides must be directed to the correct
-object, or they will be ignored. See the following example.
-}
+@warning{Markups attached to a multi-measure rest are objects of type
+@code{MultiMeasureRestText}, not @code{TextScript}. Overrides must
+be directed to the correct object, or they will be ignored. See the
+following example:}
-@lilypond[quote,verbatim,fragment]
+@lilypond[quote,verbatim,relative=2]
% This fails, as the wrong object name is specified
\override TextScript #'padding = #5
R1^"wrong"
-% This is correct and works
+% This is the correct object name to be specified
\override MultiMeasureRestText #'padding = #5
R1^"right"
@end lilypond
@funindex \textLengthOn
@funindex textLengthOn
@funindex \textLengthOff
-@funindex textLenthOff
+@funindex textLengthOff
@funindex \fermataMarkup
@funindex fermataMarkup
@funindex \compressFullBarRests
@cindex multi-measure rests and fingerings
@knownissues
-
-If an attempt is made to use fingerings (e.g.,
-@code{R1*10-4}) to put numbers over multi-measure rests, the
-fingering numeral (4) may collide with the bar counter
-numeral (10).
+Fingerings over multi-measure rests (e.g. @code{R1*10-4}) may result
+in the fingering numeral colliding with the bar counter
+numeral.
@cindex condensing rests
@cindex rest, condensing ordinary
@menu
* Time signature::
+* Metronome marks::
* Upbeats::
* Unmetered music::
* Polymetric notation::
Mensural time signatures are covered in
@ref{Mensural time signatures}.
+@cindex time signature default settings
+@cindex autobeaming properties for time signatures
+@cindex beaming, time signature default properties
+@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:
+
+@lilypond[quote,verbatim]
+\score {
+ \relative c' {
+ \overrideTimeSignatureSettings
+ #'Score % context
+ #'(4 . 4) % timeSignatureFraction
+ #'(1 . 4) % baseMomentFraction
+ #'(3 1) % beatStructure
+ #'() % beamExceptions
+ \time 4/4
+ \repeat unfold 8 { c8 } |
+ }
+}
+@end lilypond
+
+@code{\overrideTimeSignatureSettings} takes five arguments:
+
+@enumerate
+@item
+@code{@var{context}}, a Scheme symbol that describes the context
+to which the default setting will apply.
+
+@item
+@code{@var{timeSignatureFraction}}, a Scheme pair describing the
+time signature.
+
+@item
+@code{@var{baseMomentFraction}}, a Scheme pair containing the numerator
+and denominator of the basic timing unit for the time signature.
+
+@item
+@code{@var{beatStructure}}, a Scheme list indicating the structure
+of the beats in the measure, in units of the base moment.
+
+@item
+@code{@var{beamExceptions}}, an alist containing any beaming rules
+for the time signature that go beyond ending at every beat, as
+described in @ref{Setting automatic beam behavior}.
+@end enumerate
+
+@cindex time signature properties, restoring default values
+@cindex restoring default properties for time signatures
+@funindex \revertTimeSignatureSettings
+
+Changed values of default time signature properties can be restored
+to the original values:
+
+@lilypond[quote,verbatim]
+\score{
+ \relative c' {
+ \repeat unfold 8 { c8 } |
+ \overrideTimeSignatureSettings
+ #'Score % context
+ #'(4 . 4) % timeSignatureFraction
+ #'(1 . 4) % baseMomentFraction
+ #'(3 1) % beatStructure
+ #'((end . (((1 . 8) . (3 1))))) % beamExceptions
+ \time 4/4
+ \repeat unfold 8 { c8 } |
+ \revertTimeSignatureSettings #'Score #'(4 . 4)
+ \time 4/4
+ \repeat unfold 8 { c8 } |
+ }
+}
+@end lilypond
@predefined
@code{\numericTimeSignature},
@rinternals{TimeSignature},
@rinternals{Timing_translator}.
+@node Metronome marks
+@unnumberedsubsubsec Metronome marks
+
+@cindex tempo
+@cindex beats per minute
+@cindex metronome mark
+@cindex metronome marking with text
+
+@funindex \tempo
+@funindex tempo
+
+A basic metronome mark is simple to write:
+
+@lilypond[verbatim,quote,relative=1]
+\tempo 4 = 120
+c2 d
+e4. d8 c2
+@end lilypond
+
+Metronome marks may also be printed as a range of two numbers:
+
+@lilypond[verbatim,quote,relative=1]
+\tempo 4 = 40 ~ 46
+c4. ees8
+fis g aes c,
+b1
+@end lilypond
+
+Tempo indications with text can be used instead:
+
+@lilypond[verbatim,quote,relative=2]
+\tempo "Allegretto"
+c4 e d c
+b4. a16 b c4 r4
+@end lilypond
+
+Combining a metronome mark and text will automatically place the
+metronome mark within parentheses:
+
+@lilypond[verbatim,quote,relative=2]
+\tempo "Allegro" 4 = 160
+g4 c d e
+d4 b g2
+@end lilypond
+
+In general, the text can be any markup object:
+
+@lilypond[verbatim,quote,relative=2]
+\tempo \markup { \italic Faster } 4 = 132
+a8-. r8 b-. r gis-. r a-. r
+@end lilypond
+
+A parenthesized metronome mark with no textual indication may be
+written by including an empty string in the input:
+
+@lilypond[verbatim,quote,relative=2]
+\tempo "" 8 = 96
+d4 g e c
+@end lilypond
+
+
+@snippets
+
+@lilypondfile[verbatim,lilyquote,texidoc,doctitle]
+{printing-metronome-and-rehearsal-marks-below-the-staff.ly}
+
+@c perhaps also an example of how to move it horizontally?
+
+@lilypondfile[verbatim,lilyquote,texidoc,doctitle]
+{changing-the-tempo-without-a-metronome-mark.ly}
+
+@lilypondfile[verbatim,lilyquote,texidoc,doctitle]
+{creating-metronome-marks-in-markup-mode.ly}
+
+For more details, see @ref{Formatting text}.
+
+
+@seealso
+Music Glossary:
+@rglos{metronome},
+@rglos{metronomic indication},
+@rglos{tempo indication},
+@rglos{metronome mark}.
+
+Notation Reference:
+@ref{Formatting text},
+@ref{MIDI output}.
+
+Snippets:
+@rlsr{Staff notation}.
+
+Internals Reference:
+@rinternals{MetronomeMark}.
+
@node Upbeats
@unnumberedsubsubsec Upbeats
@end example
@noindent
-where @code{duration} is the rhythmic length of the interval
-before the start of the first complete measure:
+where @code{@var{duration}} is the rhythmic length of the
+remaining interval of the current measure before the start of the
+next.
@lilypond[quote,verbatim,relative=2]
\partial 4 e4 |
a2. c,4 |
@end lilypond
-The partial measure can be any duration less than a full measure:
+The partial measure can be any duration less than the full measure:
@lilypond[quote,verbatim,relative=2]
\partial 8*3 c8 d e |
a2. c,4 |
@end lilypond
-Internally, @code{\partial} is translated into
+Internally, @code{\partial @var{duration}} is translated into:
@example
-\set Timing.measurePosition = -@var{duration}
+\set Timing.measurePosition -@var{duration}
+@end example
+
+For example, @code{\partial 8*3} becomes:
+
+@example
+\set Timing.measurePosition = #(ly:make-moment -3 8)
@end example
-@noindent
The property @code{measurePosition} contains a rational number
indicating how much of the measure has passed at this point. Note
-that this is set to a negative number by the @code{\partial}
-command: i.e., @code{\partial 4} is internally translated to
-@code{-4}, meaning @qq{there is a quarter note left in the measure.}
-
+that this is set to a negative number by the @code{\partial} command:
+i.e., @code{\partial 4} is internally translated to @code{-4}, meaning
+@qq{there is a quarter note left in the measure.}
@seealso
Music Glossary:
Internal Reference:
@rinternals{Timing_translator}.
-
@knownissues
The @code{\partial} command is intended to be used only at the
beginning of a piece. If you use it after the beginning, some
-odd warnings may occur.
+odd warnings or effects may occur, in this case use
+@code{\set Timing.measurePosition} instead.
@node Unmetered music
@unnumberedsubsubsec Unmetered music
use the command @code{\cadenzaOn}, and use @code{\cadenzaOff}
to turn them on again.
-@lilypond[verbatim,relative=2,fragment]
+@lilypond[verbatim,relative=2,quote]
c4 d e d
\cadenzaOn
-c4 c d8 d d f4 g4.
+c4 c d8[ d d] f4 g4.
\cadenzaOff
\bar "|"
d4 e d c
Bar numbering is resumed at the end of the cadenza as if the
cadenza were not there:
-@lilypond[verbatim,relative=2,fragment]
+@lilypond[verbatim,relative=2,quote]
% Show all bar numbers
\override Score.BarNumber #'break-visibility = #all-visible
c4 d e d
\cadenzaOn
-c4 c d8 d d f4 g4.
+c4 c d8[ d d] f4 g4.
\cadenzaOff
\bar "|"
d4 e d c
@end lilypond
+@cindex beaming in cadenzas
+@cindex beaming in unmetered music
+@cindex cadenza, beaming in
+@cindex unmetered music, beaming in
+
+Automatic beaming is disabled by @code{\cadenzaOn} and enabled
+by @code{\cadenzaOff}. Therefore, all beaming in cadenzas
+must be entered manually (@ref{Manual beams}).
+
+@lilypond[verbatim,relative=2,quote]
+\repeat unfold 8 { c8 }
+\cadenzaOn
+\repeat unfold 5 { c8 }
+\bar"|"
+\cadenzaOff
+\repeat unfold 8 { c8 }
+@end lilypond
+
Note that these predefined commands affect all staves in the
score, even when they are placed in just one @code{Voice}
context. To change this, move the @code{Timing_translator}
Notation Reference:
@ref{Visibility of objects},
-@ref{Polymetric notation}.
+@ref{Polymetric notation},
+@ref{Manual beams}.
Snippets:
@rlsr{Rhythms}.
@noindent
to indicate where breaks can occur.
+You should explicitly create a @code{Voice} context when starting a
+piece with @code{\cadenzaOn}, otherwise strange errors may occur.
+
+@example
+\new Voice @{
+ \relative c' @{
+ \cadenzaOn
+ c16[^"Solo Free Time" d e f] g2.
+ \bar "||"
+ \cadenzaOff
+ @}
+@}
+@end example
+
@node Polymetric notation
@unnumberedsubsubsec Polymetric notation
It will often be necessary to insert beams manually, as the
duration scaling affects the autobeaming rules.
-@lilypond[quote,verbatim,fragment]
+@lilypond[quote,verbatim]
\relative c' <<
\new Staff {
\time 3/4
\new Staff {
\time 3/4
c4 c c |
- c c c |
+ c4 c c |
}
\new Staff {
\time 2/4
c4 c |
- c c |
- c c |
+ c4 c |
+ c4 c |
}
\new Staff {
\time 3/8
@knownissues
When using different time signatures in parallel, notes
-at the same moment will be be placed at the same horizontal
+at the same moment will be placed at the same horizontal
location. However, the bar lines in the different staves
will cause the note spacing to be less regular in each of the
individual staves than would be normal without the different
c1 f g c
}
}
-
\new Voice \with {
\consists Pitch_squash_engraver
} \relative c'' {
@lilypond[quote,verbatim,relative=2]
\time 2/4 c8 c c c
-\time 6/8 c c c c8. c16 c8
+\time 6/8 c8 c c c8. c16 c8
@end lilypond
If these automatic decisions are not satisfactory, beaming can be
automatic beaming should be switched off with @code{\autoBeamOff}
and the beams indicated manually.}
+@warning{Using @code{@bs{}partcombine} with @code{@bs{}autoBeamOff} can
+produce unintended results. See the snippet below for more information.}
+
Beaming patterns that differ from the automatic defaults can be
created; see @ref{Setting automatic beam behavior}.
@snippets
+
@cindex line breaks and beams
@cindex beams and line breaks
@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{changing-beam-knee-gap.ly}
+@cindex \partcombine and \autoBeamOff
+@cindex \autoBeamOff and \partcombine
+
+
+@lilypondfile [verbatim, lilyquote, ragged-right, texidoc, doctitle]
+{partcombine-and-autobeamoff.ly}
+
@seealso
Notation Reference:
@ref{Setting automatic beam behavior}.
Installed Files:
-@file{scm/@/auto@/-beam@/.scm}.
+@file{scm/auto-beam.scm}.
Snippets:
@rlsr{Rhythms}.
Internals Reference:
-@rinternals{Beam}.
+@rinternals{Auto_beam_engraver},
+@rinternals{Beam_engraver},
+@rinternals{Beam},
+@rinternals{BeamEvent},
+@rinternals{BeamForbidEvent},
+@rinternals{beam-interface},
+@rinternals{unbreakable-spanner-interface}.
@knownissues
@cindex lyrics and beaming
@funindex autoBeaming
-@funindex beamSettings
+@funindex baseMoment
+@funindex beamExceptions
+@funindex beatStructure
@funindex measureLength
-@funindex beatLength
@funindex \time
@funindex time
@funindex \set
@funindex set
-The placement of automatic beams is determined by the time signature.
-Three types of rules are used for determining the end of automatic
-beams: @emph{default} rules
-for the time signature, @emph{explicit} rules for the beam in the time
-signature, and the @emph{beatLength} for the time signature.
-
-The following rules, in order of priority, apply when determining
-the appearance of beams:
-
-@itemize
-
-@item If a manual beam is specified with @code{[..]} set the beam
-as specified, otherwise
-
-@item if @code{\autoBeamOff} is in force do not beam, otherwise
-
-@item if an explicit beam-ending rule is defined for the beam type
-in the time signature, use it to determine the valid
-places where beams may end, otherwise
-
-@item if a default beam-ending rule is defined in the time signature,
-use it to group notes with beams, otherwise
-
-@item use the value of @code{beatLength} to group notes with beams
-
-@end itemize
-
-@i{@strong{Modifying the grouping of beats}}
-
-By default @code{beatLength} is
-derived from the time signature set by the @code{\time} command.
-The @code{beatLength} is set to be one over the denominator
-of the time signature.
-
-@code{beatLength} is a @i{moment},
-a unit of musical duration. A quantity of type @i{moment} is
-created by the scheme function @code{ly:make-moment}. For more
-information about this function, see @ref{Time administration}.
-
-Autobeam and beam subdivide settings are stored in the
-@code{beamSettings} property. Default values of @code{beamSettings}
-are determined in @file{scm/@/beam@/-settings@/.scm}. Entries in
-@code{beamSettings} are indexed by time signature and
-rule type.
-
-Time signature should be a scheme pair , e.g. @code{#'(4 . 4)}.
-
-Rule type should be @code{#'end} for beam ending and @code{#'subdivide} for
-beam subdivision.
-
-The ending and subdivision rules consist of a scheme alist
-(or list of pairs) that
-indicates the beam type and the grouping to be applied to that
-beam type.
-
-@example
-#'((beam-type1 . grouping-1)
- (beam-type2 . grouping-2)
- (beam-type3 . grouping-3))
-@end example
-
-Beam type is either a scheme pair indicating the duration
-of the beam, e.g. @code{(1 . 16)}, or @code{*} to indicate a
-default rule, which applies to all beams if no explicit rule is
-defined.
-
-Grouping is a scheme list indicating the grouping to be applied to
-the beam. For default rules (where beam type is
-@code{*}, the grouping is in units of @code{beatLength}.
-For explicit rules, the grouping is in units of the beam type.
-
-Beam settings are changed with
-@code{\overrideBeamSettings} and @code{\revertBeamSettings}.
+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,
+each unit of length @code{baseMoment} is a single beat.
@lilypond[quote,relative=2,verbatim]
- \time 5/16
- c8^"beats" c16 c8 |
- \overrideBeamSettings #'Score #'(5 . 16) #'end #'((* . (2 3)))
- c8^"(2+3)" c16 c8
- \overrideBeamSettings #'Score #'(5 . 16) #'end #'((* . (3 2)))
- c8^"(3+2)" c16 c8
+\time 5/16
+c16^"default" c c c c |
+\set Timing.beatStructure = #'(2 3)
+c16^"(2+3)" c c c c |
+\set Timing.beatStructure = #'(3 2)
+c16^"(3+2)" c c c c |
@end lilypond
Beam setting changes can be limited to specific contexts. If no
enclosing context will apply.
@lilypond[quote, verbatim,relative=1]
-\new Staff <<
+\new Staff {
\time 7/8
- \new Voice = one {
- \relative c'' {
- \overrideBeamSettings #'Staff #'(7 . 8) #'end #'((* . (2 3 2)))
+ \set Staff.beatStructure = #'(2 3 2)
+ <<
+ \new Voice = one {
+ \relative c'' {
a8 a a a a a a
+ }
}
- }
- \new Voice = two {
- \relative c' {
- \voiceTwo
- \overrideBeamSettings #'Voice #'(7 . 8) #'end #'((* . (1 3 3)))
- f8 f f f f f f
+ \new Voice = two {
+ \relative c' {
+ \voiceTwo
+ \set Voice.beatStructure = #'(1 3 3)
+ f8 f f f f f f
+ }
}
- }
->>
+ >>
+}
@end lilypond
When multiple voices are used the @code{Staff} context must be
@lilypond[quote,verbatim,relative=2]
\time 7/8
% rhythm 3-1-1-2
-% Context Voice specified -- does not work correctly
+% Change applied to Voice by default -- does not work correctly
% Because of autogenerated voices, all beating will
-% be at beatLength (1 . 8)
-\overrideBeamSettings #'Voice #'(7 . 8) #'end #'((* . (3 1 1 2)))
+% be at baseMoment (1 . 8)
+\set beatStructure = #'(3 1 1 2)
<< {a8 a a a16 a a a a8 a} \\ {f4. f8 f f f} >>
% Works correctly with context Staff specified
-\overrideBeamSettings #'Staff #'(7 . 8) #'end #'((* . (3 1 1 2)))
+\set Staff.beatStructure = #'(3 1 1 2)
<< {a8 a a a16 a a a a8 a} \\ {f4. f8 f f f} >>
@end lilypond
-@funindex revertBeamSettings
+The value of @code{baseMoment} can be adjusted to change
+the beaming behavior, if desired. When this is done,
+the value of @code{beatStructure} must be set to be
+compatible with the new value of @code{baseMoment}.
+
+@lilypond[quote,verbatim,relative=2]
+\time 5/8
+\set Timing.baseMoment = #(ly:make-moment 1 16)
+\set Timing.beatStructure = #'(7 3)
+\repeat unfold 10 { a16 }
+@end lilypond
+
+@code{baseMoment} is a @i{moment}; a unit of musical duration. A
+quantity of type @i{moment} is created by the scheme function
+@code{ly:make-moment}. For more information about this function,
+see @ref{Time administration}.
+
+By default @code{baseMoment} is set to one over the denominator of
+the time signature. Any exceptions to this default can be found in
+@file{scm/time-signature-settings.scm}.
+
+Special autobeaming rules (other than ending a beam on a beat)
+are defined in the @code{beamExceptions} property.
+
+@lilypond[quote,relative=2,verbatim]
+\time 3/16
+\set Timing.beatStructure = #'(2 1)
+\set Timing.beamExceptions =
+ #'( ;start of alist
+ (end . ;entry for end of beams
+ ( ;start of alist of end points
+ ((1 . 32) . (2 2 2)) ;rule for 1/32 beams -- end each 1/16
+ ))) %close all entries
+c16 c c |
+\repeat unfold 6 { c32 } |
+@end lilypond
+
+@code{beamExceptions} is an alist with a key of rule-type and a value
+of beaming-rules.
+
+At this time the only available value of rule-type is
+@code{#'end} for beam ending.
-Beam settings can be reverted to get back to default behavior. This
-is accomplished by using @code{\revertBeamSettings}. The arguments
-are the same as for @code{\overrideBeamSettings}, except no value
-for @var{grouping} is given:
+Beaming-rules is a scheme alist (or list of pairs) that indicates the
+beam type and the grouping to be applied to beams containing notes with
+a shortest duration of that beam type.
@example
-\revertBeamSettings context time-signature rule-type
+#'((beam-type1 . grouping-1)
+ (beam-type2 . grouping-2)
+ (beam-type3 . grouping-3))
@end example
+Beam type is a scheme pair indicating the duration of the beam,
+e.g., @code{(1 . 16)}.
+
+Grouping is a scheme list indicating the grouping to be applied to
+the beam. The grouping is in units of the beam type.
+
+@warning{ A @code{beamExceptions} value must be @emph{complete}
+exceptions list. That is, every exception that should be applied
+must be included in the setting. It is not possible to add, remove,
+or change only one of the exceptions. While this may seem cumbersome,
+it means that the current beaming settings need not be known in order
+to specify a new beaming pattern.}
+
+When the time signature is changed, default values of
+@code{Timing.baseMoment}, @code{Timing.beatStructure},
+and @code{Timing.beamExceptions} are set. Setting the time signature
+will reset the automatic beaming settings for the @code{Timing}
+context to the default behavior.
+
+@lilypond[quote,verbatim,relative=2]
+\time 6/8
+\repeat unfold 6 { a8 }
+% group (4 + 2)
+\set Timing.beatStructure = #'(4 2)
+\repeat unfold 6 { a8 }
+% go back to default behavior
+\time 6/8
+\repeat unfold 6 { a8 }
+@end lilypond
+
+These default automatic beaming settings for a time signature
+are determined in @file{scm/time-signature-settings.scm}.
+The automatic beaming settings for a time signature can be changed
+as described in @ref{Time signature}.
+
+Most automatic beaming settings for a time signature contain an
+entry for @code{beamExceptions}. For example, 4/4 time tries to
+beam the measure in two if there are only eighth notes. The
+@code{beamExceptions} rule can override the @code{beatStructure} setting
+if @code{beamExceptions} is not reset.
@lilypond[quote,verbatim,relative=2]
\time 4/4
-\repeat unfold 16 {a16}
-% set default rule for (1 1 1 1) grouping
-\overrideBeamSettings #'Score #'(4 . 4) #'end #'((* . (1 1 1 1)))
-\repeat unfold 16 {a16}
-% revert the new rule
-\revertBeamSettings #'Score #'(4 . 4) #'end
-\repeat unfold 16 {a16}
+\set Timing.baseMoment = #(ly:make-moment 1 8)
+\set Timing.beatStructure = #'(3 3 2)
+% This won't beam (3 3 2) because of beamExceptions
+\repeat unfold 8 {c8} |
+% This will beam (3 3 2) because we clear beamExceptions
+\set Timing.beamExceptions = #'()
+\repeat unfold 8 {c8}
+@end lilypond
+
+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 (3) 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
+@i{@strong{How automatic beaming works}}
+
+When automatic beaming is enabled, the placement of automatic beams
+is determined by the context properties
+@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}.
+
+The following rules, in order of priority, apply when determining
+the appearance of beams:
+
+@itemize
+@item
+If a manual beam is specified with @code{[..]} set the beam
+as specified, otherwise
+
+@item
+if a beam-ending rule is defined in @code{beamExceptions}
+for the beam-type, use it to determine the valid places where
+beams may end, otherwise
+
+@item
+if a beam-ending rule is defined in @code{beamExceptions}
+for a longer beam-type, use it to determined the valid places
+where beams may end, otherwise
+
+@item
+use the values of @code{baseMoment} and @code{beatStructure} to
+determine the ends of the beats in the measure, and
+end beams at the end of beats.
+
+@end itemize
+
+In the rules above, the beam-type is the duration of the
+shortest note in the beamed group.
+
+For reference, the default beaming rules are found in
+@file{scm/time-signature-settings.scm}.
+
@snippets
@cindex beams, subdividing
@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
-{sub-dividing-beams.ly}
+{subdividing-beams.ly}
@cindex measure groupings
@cindex beats, grouping
@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{conducting-signs,-measure-grouping-signs.ly}
-@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
-{beam-endings-in-score-context.ly}
-
@cindex beam, last in score
@cindex beam, last in polyphonic voice
-@knownissues
-
-If a score ends while an automatic beam has not been ended and is
-still accepting notes, this last beam will not be typeset at all.
-The same holds for polyphonic voices, entered with @code{<<
-@dots{} \\ @dots{} >>}. If a polyphonic voice ends while an
-automatic beam is still accepting notes, it is not typeset.
+@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
+{beam-endings-in-score-context.ly}
@seealso
+Installed Files:
+@file{scm/beam-settings.scm}.
+
Snippets:
@rlsr{Rhythms}.
+Internals Reference:
+@rinternals{Auto_beam_engraver},
+@rinternals{Beam},
+@rinternals{BeamForbidEvent},
+@rinternals{beam-interface}.
+
+
+@knownissues
+If a score ends while an automatic beam has not been ended and is
+still accepting notes, this last beam will not be typeset at all.
+The same holds for polyphonic voices, entered with
+@code{<< @dots{} \\ @dots{} >>}. If a polyphonic voice ends while an
+automatic beam is still accepting notes, it is not typeset.
+The workaround for these problems is to manually beam the last
+beam in the voice or score.
@node Manual beams
@unnumberedsubsubsec Manual beams
beaming algorithm. For example, the autobeamer will not put beams
over rests or bar lines, and in choral scores the beaming is
often set to follow the meter of the lyrics rather than the
-notes. Such beams can be specified manually by
-marking the begin and end point with @code{[} and @code{]}
+notes. Such beams can be specified manually by
+marking the begin and end point with @code{[} and @code{]}.
@lilypond[quote,relative=1,verbatim]
-{
- r4 r8[ g' a r8] r8 g[ | a] r8
-}
+r4 r8[ g' a r] r g[ | a] r
@end lilypond
+@cindex manual beams, direction shorthand for
+@cindex manual beams, grace notes
+
+Beaming direction can be set manually using direction indicators:
+
+@lilypond[quote,relative=2,verbatim]
+c8^[ d e] c,_[ d e f g]
+@end lilypond
@funindex \noBeam
@funindex noBeam
from being beamed:
@lilypond[quote,verbatim,relative=2]
-\time 2/4 c8 c\noBeam c c
+\time 2/4
+c8 c\noBeam c c
+@end lilypond
+
+Grace note beams and normal note beams can occur simultaneously.
+Unbeamed grace notes are not put into normal note beams.
+
+@lilypond[quote,verbatim,relative=2]
+c4 d8[
+\grace { e32[ d c d] }
+e8] e[ e
+\grace { f16 }
+e8 e]
@end lilypond
@funindex stemLeftBeamCount
a8[ r16
\set stemLeftBeamCount = #2
\set stemRightBeamCount = #1
-f
+f16
\set stemLeftBeamCount = #1
-g a]
+g16 a]
@end lilypond
+@predefined
+@code{\noBeam}.
+@endpredefined
+
+
@snippets
@lilypondfile[verbatim,lilyquote,ragged-right,texidoc,doctitle]
{flat-flags-and-beam-nibs.ly}
+
+@seealso
+Notation Reference:
+@ref{Direction and placement},
+@ref{Grace notes}.
+
+Snippets:
+@rlsr{Rhythms}.
+
+Internals Reference:
+@rinternals{Beam},
+@rinternals{BeamEvent},
+@rinternals{Beam_engraver},
+@rinternals{beam-interface},
+@rinternals{Stem_engraver}.
+
+
@node Feathered beams
@unnumberedsubsubsec Feathered beams
The spacing in the printed output represents the
note durations only approximately, but the MIDI output is exact.
-@knownissues
-
-The @code{\featherDurations} command only works with very short
-music snippets, and when numbers in the fraction are small.
+@predefined
+@code{\featherDurations}.
+@endpredefined
@seealso
Snippets:
@rlsr{Rhythms}.
+@knownissues
+
+The @code{\featherDurations} command only works with very short
+music snippets, and when numbers in the fraction are small.
+
+
@node Bars
@subsection Bars
Line breaks are also permitted at manually inserted bar lines
even within incomplete measures. To allow a line break without
-printing a bar line, use
+printing a bar line, use the following:
@example
\bar ""
the specified bar line is inserted at that point in the printed
output.
-Note that manual bar lines are purely visual. They do not affect
+Note that manual bar lines are purely visual. They do not affect
any of the properties that a normal bar line would affect, such as
measure numbers, accidentals, line breaks, etc. They do not affect
the calculation and placement of subsequent automatic bar lines.
When a manual bar line is placed where a normal bar line already
exists, the effects of the original bar line are not altered.
-Two types of simple bar lines and five types of double bar lines are available
-for manual insertion:
+Two types of simple bar lines and five types of double bar lines are
+available for manual insertion:
@lilypond[quote,relative=1,verbatim]
f1 \bar "|"
-f \bar "."
-g \bar "||"
-a \bar ".|"
-b \bar ".|."
-c \bar "|.|"
-d \bar "|."
-e
+f1 \bar "."
+g1 \bar "||"
+a1 \bar ".|"
+b1 \bar ".|."
+c1 \bar "|.|"
+d1 \bar "|."
+e1
@end lilypond
@noindent
@lilypond[quote,relative=1,verbatim]
f1 \bar ":"
-g \bar "dashed"
-a
+g1 \bar "dashed"
+a1
@end lilypond
@noindent
@lilypond[quote,relative=1,verbatim]
f1 \bar "|:"
-g \bar ":|:"
-a \bar ":|.|:"
-b \bar ":|.:"
-c \bar ":|"
-d
+g1 \bar ":|:"
+a1 \bar ":|.|:"
+b1 \bar ":|.:"
+c1 \bar ":|"
+e1
@end lilypond
Additionally, a bar line can be printed as a simple tick:
@lilypond[quote,relative=1,verbatim]
f1 \bar "'"
@end lilypond
-However, as such ticks are typically used in Gregorian chant, it is preferable
-to use @code{\divisioMinima} there instead, described in the section
-@ref{Divisiones} in Gregorian chant.
+However, as such ticks are typically used in Gregorian chant, it is
+preferable to use @code{\divisioMinima} there instead, described in
+the section @ref{Divisiones} in Gregorian chant.
+@cindex segno
+
+For in-line segno signs, there are three types of bar lines which
+differ in their behavior at line breaks:
+
+@lilypond[quote,relative=2,verbatim]
+c4 c c c
+\bar "S"
+c4 c c c \break
+\bar "S"
+c4 c c c
+\bar "|S"
+c4 c c c \break
+\bar "|S"
+c4 c c c
+\bar "S|"
+c4 c c c \break
+\bar "S|"
+c1
+@end lilypond
@cindex repeats
the next line.
@lilypond[quote,relative=2,verbatim]
-c c c c
+c4 c c c
\bar "||:"
-c c c c \break
+c4 c c c \break
\bar "||:"
-c c c c
+c4 c c c
+@end lilypond
+
+For combinations of repeats with the segno sign, there are six different
+variations:
+
+@lilypond[quote,relative=2,verbatim]
+c4 c c c
+\bar ":|S"
+c4 c c c \break
+\bar ":|S"
+c4 c c c
+\bar ":|S."
+c4 c c c \break
+\bar ":|S."
+c4 c c c
+\bar "S|:"
+c4 c c c \break
+\bar "S|:"
+c4 c c c
+\bar ".S|:"
+c4 c c c \break
+\bar ".S|:"
+c4 c c c
+\bar ":|S|:"
+c4 c c c \break
+\bar ":|S|:"
+c4 c c c
+\bar ":|S.|:"
+c4 c c c \break
+\bar ":|S.|:"
+c1
@end lilypond
+
In scores with many staves, a @code{\bar} command in one staff is
automatically applied to all staves. The resulting bar lines are
connected between different staves of a @code{StaffGroup},
@code{PianoStaff}, or @code{GrandStaff}.
-@lilypond[quote,fragment,verbatim]
+@lilypond[quote,relative=1,verbatim]
<<
\new StaffGroup <<
\new Staff {
- e'4 d'
+ e4 d
\bar "||"
- f' e'
+ f4 e
}
\new Staff { \clef bass c4 g e g }
>>
@funindex bar
@funindex bartype
-The command @code{\bar }@var{bartype} is a shortcut for
-@code{\set Timing.whichBar = }@var{bartype}. A bar line is
-created whenever the @code{whichBar} property is
-set.
+The command @samp{\bar @var{bartype}} is a shortcut for
+@samp{\set Timing.whichBar = @var{bartype}}. A bar line is
+created whenever the @code{whichBar} property is set.
The default bar type used for automatically inserted bar lines is
-@code{"|"}. This may be changed at any time
-with @code{\set Timing.defaultBarType = }@var{bartype}.
+@code{"|"}. This may be changed at any time with
+@samp{\set Timing.defaultBarType = @var{bartype}}.
@seealso
@code{currentBarNumber} property, which is normally updated
automatically for every measure. It may also be set manually:
-@lilypond[verbatim,quote,fragment,relative=1]
+@lilypond[verbatim,quote,relative=1]
c1 c c c
\break
\set Score.currentBarNumber = #50
@rlsr{Rhythms}.
Internals Reference:
-@rinternals{BarNumber}.
+@rinternals{BarNumber},
+@rinternals{Bar_number_engraver}.
@cindex bar number collision
@cindex collision, bar number
@knownissues
-
Bar numbers may collide with the top of the @code{StaffGroup} bracket,
if there is one. To solve this, the @code{padding} property of
@code{BarNumber} can be used to position the number correctly. See
@rinternals{StaffGroup} and @rinternals{BarNumber} for more.
-
@node Bar and bar number checks
@unnumberedsubsubsec Bar and bar number checks
\time 3/4 c2 e4 | g2 |
@end example
-Bar checks can also be used in lyrics, for example
+Bar checks can also be used in lyrics:
@example
\lyricmode @{
@lilypond[quote,verbatim]
pipeSymbol = \bar "||"
{
- c'2 c'2 |
- c'2 c'2
- c'2 | c'2
- c'2 c'2
+ c'2 c' |
+ c'2 c'
+ c'2 | c'
+ c'2 c'
}
@end lilypond
To print a rehearsal mark, use the @code{\mark} command.
+@lilypond[quote,verbatim,relative=2]
+c1 \mark \default
+c1 \mark \default
+c1 \mark \default
+c1 \mark \default
+@end lilypond
+
+@noindent
+The mark is incremented automatically if you use @code{\mark
+\default}, but you can also use an integer argument to set the
+mark manually. The value to use is stored in the property
+@code{rehearsalMark}.
+
@lilypond[quote,verbatim,relative=2]
c1 \mark \default
c1 \mark \default
@noindent
The letter@tie{}@q{I} is skipped in accordance with engraving
-traditions. If you wish to include the letter @q{I}, then use
+traditions. If you wish to include the letter @q{I}, then use one
+of the following commands, depending on which style of rehearsal mark
+you want (letters only, letters in a hollow box, or letters in a
+hollow circle).
@example
\set Score.markFormatter = #format-mark-alphabet
+\set Score.markFormatter = #format-mark-box-alphabet
+\set Score.markFormatter = #format-mark-circle-alphabet
@end example
-The mark is incremented automatically if you use @code{\mark
-\default}, but you can also use an integer argument to set the
-mark manually. The value to use is stored in the property
-@code{rehearsalMark}.
+@lilypond[quote,verbatim,relative=2]
+\set Score.markFormatter = #format-mark-box-alphabet
+c1 \mark \default
+c1 \mark \default
+c1 \mark #8
+c1 \mark \default
+c1 \mark \default
+@end lilypond
@cindex rehearsal mark format
@cindex rehearsal mark style
c1
@end lilypond
-The file @file{scm/@/translation@/-functions@/.scm} contains the
+The file @file{scm/translation-functions.scm} contains the
definitions of @code{format-mark-numbers} (the default format),
@code{format-mark-box-numbers}, @code{format-mark-letters} and
@code{format-mark-box-letters}. These can be used as inspiration
printed with @code{\musicglyph}.
For common tweaks to the positioning of rehearsal marks, see
-@ref{Formatting text}.
+@ref{Formatting text}. For more precise control, see
+@code{break-alignable-interface} in @ref{Aligning objects}.
@seealso
Notation Reference:
@ref{The Feta font},
-@ref{Formatting text}.
+@ref{Formatting text},
+@ref{Aligning objects}.
Installed Files:
-@file{scm/@/translation@/-functions@/.scm} contains
-the definition of @code{format-mark-numbers} and
+@file{scm/translation-functions.scm} contains
+the definitions of @code{format-mark-numbers} and
@code{format-mark-letters}. They can be used as inspiration for
other formatting functions.
@rlsr{Rhythms}.
Internals Reference:
+@rinternals{MarkEvent},
+@rinternals{Mark_engraver},
@rinternals{RehearsalMark}.
@funindex \grace
@funindex grace
-Grace notes are ornaments that are written out. Grace notes
+Grace notes are ornaments that are written out. Grace notes
are printed in a smaller font and take up no logical time
in a measure.
notes for every eighth grace note
@lilypond[quote,relative=2,verbatim]
-<< \new Staff { e2 \grace { c16[ d e f] } e2 }
- \new Staff { c2 \grace { g8[ b] } c2 } >>
+<<
+ \new Staff { e2 \grace { c16[ d e f] } e2 }
+ \new Staff { c2 \grace { g8[ b] } c2 }
+>>
@end lilypond
@cindex grace notes, following
@end lilypond
The space between the main note and the grace note may also be
-specified using spacers. The following example places the grace
+specified using spacers. The following example places the grace
note after a space lasting 7/8 of the main note.
@lilypond[quote,verbatim,relative=2]
\new Voice {
- << { d1^\trill_( }
- { s2 s4. \grace { c16[ d] } } >>
+ <<
+ { d1^\trill_( }
+ { s2 s4. \grace { c16[ d] } }
+ >>
c1)
}
@end lilypond
typesetting settings, for example, to produce smaller type, and
set directions. Hence, when introducing layout tweaks to
override the special settings, they should be placed inside
-the grace expression. The overrides should also be reverted
-inside the grace expression. Here, the grace note's default stem
+the grace expression. The overrides should also be reverted
+inside the grace expression. Here, the grace note's default stem
direction is overridden and then reverted.
@lilypond[quote,verbatim,relative=2]
@rglos{acciaccatura},
@rglos{appoggiatura}.
+Notation Reference:
+@ref{Manual beams}.
+
Installed Files:
-@file{ly/@/grace@/-init@/.ly}.
+@file{ly/grace-init.ly}.
Snippets:
@rlsr{Rhythms}.
Internals Reference:
-@rinternals{GraceMusic}.
+@rinternals{GraceMusic},
+@rinternals{Grace_beam_engraver},
+@rinternals{Grace_engraver},
+@rinternals{Grace_spacing_engraver}.
@knownissues
Time is administered by the @code{Timing_translator}, which by
default is to be found in the @code{Score} context. An alias,
@code{Timing}, is added to the context in which the
-@code{Timing_translator} is placed.
+@code{Timing_translator} is placed. To ensure that the
+@code{Timing} alias is available, you may need to explicitly
+instantiate the containing context (such as @code{Voice} or
+@code{Staff}).
The following properties of @code{Timing} are used
to keep track of timing within the score.
advanced by 1/8 to 5/8, shortening that bar by 1/8.
The next bar line then falls at 9/8 rather than 5/4.
-@lilypond[quote,verbatim,relative=1]
-\set Score.measureLength = #(ly:make-moment 5 4)
-c1 c4
-c1 c4
-c4 c4
-\set Score.measurePosition = #(ly:make-moment 5 8)
-b4 b4 b8
-c4 c1
+@lilypond[quote,verbatim]
+\new Voice \relative c' {
+ \set Timing.measureLength = #(ly:make-moment 5 4)
+ c1 c4 |
+ c1 c4 |
+ c4 c
+ \set Timing.measurePosition = #(ly:make-moment 5 8)
+ b4 b b8 |
+ c4 c1 |
+}
@end lilypond
@noindent
projects / lilypond.git / blobdiff