Re: Stem duration

[Knut Petersen]

Am 06.07.2017 um 00:03 schrieb Simon Albrecht:
> On 05.07.2017 15:33, David Kastrup wrote:
> > > Interesting. Noteheads of different duration attached to a single stem?
> > > I don't remember to have seen something like that, and google does not
> > > really help. Which instrument uses such a notation, could you give an
> > > example?
> > I've seen it in the solo partitas and sonatas for violin from Bach and
> > would assume that they are also to be found in the cello suites.
>
> Both Bach and Mozart wrote this using more than one voice, even for non divisi 
> violins. However, later centuries introduced the notation with different 
> durations on one stem; this is commonly achieved in LilyPond by overriding 
> duration-log on note-heads, not by actual duration.

Thanks for explaining that to me. I found those constructs in the Schirmer 221 
edition.
It's interesting to see that Bach himself uses some other kind of notation, 
compare e.g.
the start of the Ciaccona in d flat in his own manuscript and the Schirmer 
edition.

Back to my problem: I think I have to use some heuristics to determine the 
duration
of stems and flags ...

Knut