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Re: feathered beam calculations

From: N. Andrew Walsh
Subject: Re: feathered beam calculations
Date: Mon, 17 Dec 2018 11:11:48 +0100

Hi Reggie,

well, my "solution" was that the client changed his mind and didn't want a ritardando there, so I did away with them.

But no, I've never found a good way to calculate feathered beams (nor how to space them properly to match their changing duration values). This seems like something Lily could do really well, but I don't think the tool has been really developed.



On Sat, Dec 15, 2018 at 8:02 PM Reggie <address@hidden> wrote:
N. Andrew Walsh wrote
> Hi List,
> I'm trying to use the \featherDurations command on a brief passage:
> \relative c' {
> a,,^\markup { \italic "subito meno mosso" }\( b cis dis eis8\)
>  \override Beam.grow-direction = #LEFT
>   \featherDurations #(ly:make-moment 2/1)
>  { a,32[\( b cis dis eis]\)\fermata }
>  \override Beam.grow-direction = #'()
>  < a, cis e >16 < a cis e >
> }
> What I want is for that feathered group on the fourth line to occupy the
> duration of exactly one eighth note. As there are five notes, I'm
> struggling with the math, and thus what to put after ly:make-moment.
> Can you advise as to what the numbers should be?
> Cheers,
> A
> _______________________________________________
> lilypond-user mailing list

> lilypond-user@


Did you solve this? I cannot find anywhere in documentation an exact
information about how to explicitly tell lilypond how many beats should be
in a group of feather beamed notes. Like you say 1 eighth note what about a
dotted quarter or a half note. No idea how to force the duration of feathers
to be X beats in order for bar check success. Did you find the answer?

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