Re: Automatically identify beats

[Aaron Hill]

On 2018-10-07 4:29 am, Thomas Morley wrote:
> Am So., 7. Okt. 2018 um 07:31 Uhr schrieb Aaron Hill 
> <address@hidden>:
> > For instance, 6/8 timing could be thought of as "1 2 3 / 4 5 6" or "1 
> > 2
> > / 3 4 / 5 6".
>
> I disagree.
> "1 2 / 3 4 / 5 6" feels like 3/4. No matter what is actual printed.

Of course it would feel like 3/4.  3/4 is simply "1 2 3" but "1 + 2 + 3 
+" if we count the ANDs.  3/4 and 6/8 are the same rational value so 
it's not surprising to see overlap.  Things get more interesting, 
however, when you have songs that are in 6/8 but have a 4/4 feel due to 
use of dotted eighths.  Or would that be 4/(5 1/3)? ;-)

> Though, I think it clutters the input. (And returns inconsistent
> results for \partial, although this would be not too had to fix.)

Oops, didn't think about that case.  I guess I was just happy that 
tuplets worked providing you do the math and specify the correct 
rational number.  But I wouldn't doubt that more interesting music would 
exhibit odd behavior because I oversimplified something.

> Below my own attempt using an engraver (to have access to the
> 'timeSignatureFraction, a context-property, and to Stem/NoteHead-grobs
> in one go).
> [ . . . ]

That is definitely something I will have to review in detail, as I have 
not yet worked with engravers and contexts obviously still have a lot to 
learn.


-- Aaron Hill