Lukas-Fabian Moser,

This is wonderful!  Thanks for taking the time to do this.  The mathematics
of the "cheat" is complex to me, but it works well.

--
Knute Snortum



On Wed, Dec 27, 2023 at 4:18 AM Lukas-Fabian Moser <l...@gmx.de> wrote:

> Hi Knute, hi Mark,
>
> here's an example of what I mean. The "cheating" system should create what
> the original engraving suggests, even if it's wrong mathematically. I
> didn't check the difference in MIDI; of course the "conductor" part
> (consisting of eigths throughout) shows a significant difference.
>
> Of course I took advantage of the fact that the original engraving stops
> bothering with tuplet brackets/numbers starting from the second bar; it
> should be possible to get them back, but this will involve some further
> tweaking in the "cheating" version.
>
> Lukas
> Am 27.12.23 um 09:17 schrieb Lukas-Fabian Moser:
>
> Hi Mark,
> Am 27.12.23 um 01:54 schrieb Mark Stephen Mrotek:
>
> Knute,
>
> In the original the first beat of the second measure is three against 2.
> The 5 against 3 does not start until the second beat.
>
> Unfortunately, that can't be true, as with this interpretation, the
> measure is over-full. Rather, the groups of quintuplets/triplets continue,
> with a beaming not in sync with the measure's beat structure.
>
> This also implies that the original engraving isn't mathematically correct
> (as the beginnings of the bems groups look as if they're aligned).
> Situations like that are hard to approximate with LilyPond, as Lily has a
> strict binary notion of two notes being simultaneous or not. One can try
> cheating a bit by engraving the measure according to its visual apperance
> (3-vs-2 in the first beat, exact 4-vs-1 in the last quaver of the measure),
> but then it will be necessary to compress whatever will be in the measure
> to the duration of one whole note, and it's not certain what LilyPond's
> spacing algorithm will make of it.
>
> Sorry for describing the situation verbally; I'll try to cook up an
> example as soon as I have time (later today).
>
> Lukas
>
>

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