@snippets
-
-@lilypondfile[verbatim,quote,ragged-right,texidoc,doctitle]
-{changing-the-time-signature-without-affecting-the-beaming.ly}
-
-@cindex compound time signatures
-@cindex time signature, compound
-
-@lilypondfile[verbatim,quote,texidoc,doctitle]
-{compound-time-signatures.ly}
-
@lilypondfile[verbatim,quote,texidoc,doctitle]
{time-signature-printing-only-the-numerator-as-a-number-instead-of-the-fraction.ly}
@funindex \times
@funindex times
-Polymetric notation is supported, either explicitly or by modifying
-the visible time signature symbol and scaling the note durations.
+Polymetric notation is supported explicitly or by manually modifying the
+visible time signature symbol and/or scaling note durations.
-@strong{@i{Staves with different time signatures, equal measure lengths}}
+@subsubheading Different time signatures with equal-length measures
-This notation can be created by setting a common time signature
-for each staff but replacing the symbol manually by setting
-@code{timeSignatureFraction} to the desired fraction and scaling
-the printed durations in each staff to the common time
-signature; see @ref{Time signature}. The scaling is done with
-@code{\scaleDurations}, which is used in a similar way to
-@code{\times}, but does not create a tuplet bracket; see
-@ref{Scaling durations}.
+Set a common time signature for each staff, and set the
+@code{timeSignatureFraction} to the desired fraction. Then use the
+@code{\scaleDurations} function to scale the durations of the notes in
+each staff to the common time signature.
@cindex beams, with polymetric meters
@cindex polymetric meters, with beams
-In this example, music with the time signatures of 3/4, 9/8, and
-10/8 are used in parallel. In the second staff, shown durations
-are multiplied by 2/3, as 2/3 * 9/8 = 3/4, and in the third
-staff, shown durations are multiplied by 3/5, as 3/5 * 10/8 = 3/4.
-It will often be necessary to insert beams manually, as the
-duration scaling affects the autobeaming rules.
+In the following example, music with the time signatures of 3/4, 9/8 and
+10/8 are used in parallel. In the second staff, shown durations are
+multiplied by 2/3 (because 2/3 * 9/8 = 3/4) and in the third staff, the
+shown durations are multiplied by 3/5 (because 3/5 * 10/8 = 3/4). It
+may be necessary to insert beams manually, as the duration scaling will
+affect the autobeaming rules.
@lilypond[quote,verbatim]
\relative c' <<
\new Staff {
\time 3/4
c4 c c |
- c c c |
+ c4 c c |
}
\new Staff {
\time 3/4
\scaleDurations #'(3 . 5) {
\repeat unfold 2 { c8[ c c] }
\repeat unfold 2 { c8[ c] } |
- c4. c4. \times 2/3 { c8[ c c] } c4
+ c4. c \times 2/3 { c8[ c c] } c4
}
}
>>
@end lilypond
-@strong{@i{Staves with different time signatures, unequal bar lengths}}
+@subsubheading 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
>>
@end lilypond
-@snippets
+@funindex \compoundMeter
+@cindex compound time signatures
+@cindex time signature, compound
-@lilypondfile[verbatim,quote,ragged-right,texidoc,doctitle]
-{compound-time-signatures.ly}
+@subsubheading Compound time signatures
+
+These are created using the @code{\compoundMeter} function. The syntax
+for this is:
+
+@example
+\compoundMeter #'@code{(list of lists)}
+@end example
+The simplest construction is a single list, where the @emph{last} number
+indicates the bottom number of the time signature and those that come
+before it, the top numbers.
+
+@lilypond[quote,verbatim]
+\relative c' {
+ \compoundMeter #'((2 2 2 8))
+ \repeat unfold 6 c8 \repeat unfold 12 c16
+}
+@end lilypond
+
+More complex meters can be constructed using additional lists. Also,
+automatic beaming settings will be adjusted depending on the values.
+
+@lilypond[quote,verbatim]
+\relative c' {
+ \compoundMeter #'((1 4) (3 8))
+ \repeat unfold 5 c8 \repeat unfold 10 c16
+}
+
+\relative c' {
+ \compoundMeter #'((1 2 3 8) (3 4))
+ \repeat unfold 12 c8
+}
+@end lilypond
@seealso
Music Glossary:
@rglos{meter}.
Notation Reference:
+@ref{Automatic beams},
+@ref{Manual beams},
@ref{Time signature},
@ref{Scaling durations}.
@knownissues
-
-When using different time signatures in parallel, notes
-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
-time signatures.
+When using different time signatures in parallel, notes 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 time signatures.
@node Automatic note splitting
@unnumberedsubsubsec Automatic note splitting
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