Re: Automatically splitting long notes according to the beat?

[David Bellows]

> This is of course a total hack, but basically you could pretend that the 
> measures are 2/4 rather than 4/4. Then by hiding every other bar line, it 
> *looks* like it is 4/4.

That's pretty clever. I'll play around with that approach to see how
flexible it is. I generate Lilypond files automatically from a program
I've written that generates music so I will have to find a way to
automate the process. I was hoping that this was already a feature
that I wasn't aware of.

On Thu, Apr 4, 2019 at 6:08 PM Aaron Hill <address@hidden> wrote:
>
> On 2019-04-04 5:24 pm, David Bellows wrote:
> > Lilypond groups beams automatically according to the beat. If you use
> > the "Completion_heads_engraver" you can get Lilypond to automatically
> > split long notes at bar lines tying them together.
> >
> > So I'm wondering if Lilypond can automatically split long notes
> > according to the beat and if I am just missing something?
> >
> > If you have something like:
> >
> > {c'8 c'2 c'4 c'8}
> >
> > then you might want it to automatically split at the middle of the bar:
> >
> > {c'8 c'4.~c'8 c'4 c'8}
> >
> > or even on every beat:
> >
> > {c'8 c'8~c'4~c'8 c'8~c'8 c'8}
> >
> > And if it's  compound meter then it seems less optional:
> >
> > {\time 6/8 c'8 c'2 c'8} should be:
> > {\time 6/8 c'8 c'4~c'4 c'8}
> >
> > Elaine Gould says on the first example:
> > "When the rhythms are not part of a regular pattern, the long duration
> > may
> > be divided to expose the beats or half—bar, to make the rhythm easier
> > to count
> > and therefore to place."
> >
> > and
> > "Compound Time: No note-value should be written across the beat, ..."
> >
> > I've been searching for a while but I haven't been able to find
> > mention of this anywhere though I might not be using the correct
> > search terms.
>
> This is of course a total hack, but basically you could pretend that the
> measures are 2/4 rather than 4/4.  Then by hiding every other bar line,
> it *looks* like it is 4/4:
>
> %%%%
> \version "2.19.82"
> \new Staff
>    <<
>      { \tweak stencil
>          #(lambda (grob) (grob-interpret-markup grob #{
>              \markup \override #'(baseline-skip . 0)
>                      \column { \number 4 \number 4 } #}))
>        \time 2/4
>        \repeat unfold 3 { s2 \bar "" \noBreak s2 \bar "|" } }
>
>      \new Voice \with { \remove "Note_heads_engraver"
>                         \consists "Completion_heads_engraver" }
>      \fixed c' { c8 c2 c4 c4 c1 c4 c2 c8 | }
>    >>
> %%%%
>
> But there are almost certainly problems with such a kludge.
>
>
> -- Aaron Hill
>
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