Re: Autobeaming restructuring

[Hans Aberg]

On 24 Jun 2009, at 21:03, Carl D. Sorensen wrote:

> I'm not sure I understand all of your points.  With the new changes,  
> it is
> possible to define any grouping you want to define within a time  
> signature.
>
> Thus, if you want to have 2/8 + 3/8 +2 8 = 7/8, it is trivial to get  
> (2 3 2)
> grouping from a 7/8 time signature.

Most important is to get the beaming improved. But it is still a bit  
the other way around, since one gets the time signature from the meter  
and not the other way around. Perhaps one could make an interface like  
(in pseudocode)
  \meter [(3+2)]+[(3+(2+2))]/16
and then the "(...)" define the beaming substructure, and "[...]"  
describes how to sum up the time signature (which is 5/16 + 8/16 in  
this case).

There is also the more complex case of the meter ((3+(2+2))+(3+2))/16  
with quadruplets on the 3s. Then one might write it as [(4:3+(2+2)) 
+(4:3+2)]/16.

Sometimes, one may use more than one metric structure. For example,  
the meter (3+(2+2))/16 may or may not have quadruplets on the 3s.

And there are compound meters, like the Sedi Donka, which is (7+7+11)/ 
16, where 7 = 3+(2+2) and 11 = (2+2)+3+(2+2).

  Hans