[MEI-L] Slurs/ties across repetitions and/or endings
Craig Sapp
craigsapp at gmail.com
Wed Feb 6 10:06:54 CET 2019
The notation in measure 18 and 19 in the third system (given as a PDF
attachment in case inline images are removed):
[image: Screen Shot 2019-02-06 at 3.39.41 AM.png]
Is shorthand for:
[image: Screen Shot 2019-02-06 at 3.39.46 AM.png]
MEI's primary focus is on the visual aspect of the notation. So the
slur/tie in the second repeat should have a @startid attaching to the
barline at the beginning of the second repeat (or a @tstamp of 0, also
representing the barline at the start of the measure).
When the semantics of the situation is in conflict with the visual grammar
(as in this case where the slur/tie start on a barline), then there should
be a parallel gestural parameter to clarify the performance meaning (i.e.,
"semantics") of the element. So in these cases, the slur/tie starting on
the barline in the second repeat should contain an additional gestural
attribute called @startid.ges. This is a parallel situation to note at accid
& note at accid.ges, note at dur & note at dur.ges, as well as note at dots &
note at dots.ges.
@startid.ges does not yet exist:
https://music-encoding.org/guidelines/v4/elements/slur.html
https://music-encoding.org/guidelines/v4/elements/tie.html
So it will first need to be added to the MEI schema before it can be used.
For notation rendering, @startid would be used, but for performance
rendering (i.e., converting to a MIDI file), @startid.ges would be used.
This sort of encoding would also apply to the other situations on the page
that you mention (where @endid.ges will also be required).
-=+Craig
On Wed, 6 Feb 2019 at 02:43, Andrew Hankinson <
andrew.hankinson at bodleian.ox.ac.uk> wrote:
> You could also have two ties with the same startid and a different endid.
> I'm not sure how Verovio would render it, but that would seem to me to be
> the most 'semantic' markup.
>
> -Andrew
>
> > On 5 Feb 2019, at 17:31, Werner Goebl <goebl at mdw.ac.at> wrote:
> >
> > Hi Andrew,
> >
> > thanks for your message. Sure, but then you only have one start and one
> end id, but for my example 1, I need two start ids or for example 2 two end
> ids.
> >
> > To clarify my problem, please see the attached MEI file with two slur
> elements for each of the two problems (renders strangely).
> >
> > Thanks,
> > Werner
> >
> > On 05.02.19 17:16, Andrew Hankinson wrote:
> >> Hi Werner,
> >> I would use the @startid and @endid attributes on the <tie> (or <slur>)
> elements:
> >> <tie startid="#note-id1" endid="#note-id2" />
> >> This would mean that you would need to assign xml:ids to the note
> elements:
> >> <note xml:id="note-id1" ... />
> >> <note xml:id="note-id2" ... />
> >> -Andrew
> >>> On 5 Feb 2019, at 17:10, Werner Goebl <goebl at mdw.ac.at> wrote:
> >>>
> >>> Dear list,
> >>>
> >>> How would you encode a slur or tie that spans across a repetition sign
> and an ending block or across two ending blocks?
> >>>
> >>> Please see attached an excerpt from Beethoven Op. 57, 2nd movement.
> >>>
> >>> 1) There is a tie in the bass (bars 1--2) across a repeat start. The
> same tie is drawn in bar 9 with a repetition bar line in the first ending
> (prima volta) that leads back to bar 2.
> >>>
> >>> You could encode the ties as note attributes with multiple tie="i" or
> tie="t".
> >>>
> >>> The first example in bar 1--2/9--2 would be like this:
> >>>
> >>> <measure n="1">
> >>> ...
> >>> <note dur="8" oct="1" pname="g" accid.ges="f" tie="i" />
> >>> ...
> >>> </measure>
> >>> <measure n="2" left="rptstart">
> >>> ...
> >>> <note dur="8" oct="1" pname="g" accid.ges="f" tie="t" />
> >>> ...
> >>> </measure>
> >>> ...
> >>> <ending n="1">
> >>> ...
> >>> <measure n="9" right="rptend">
> >>> ...
> >>> <note dur="8" oct="1" pname="g" accid.ges="f" tie="i" />
> >>> ...
> >>> </measure>
> >>> </ending>
> >>>
> >>> 2) Another version of this problem is the tie from bar 7--8 into
> ending 1 and into ending 2. (A second such example occurs in the 3rd staff
> group.)
> >>>
> >>> <measure n="7">
> >>> ...
> >>> <note dur="8" oct="1" pname="a" accid.ges="f" tie="i" />
> >>> ...
> >>> </measure>
> >>> <ending n="1">
> >>> <measure n="8">
> >>> ...
> >>> <note dur="8" oct="1" pname="a" accid.ges="f" tie="t" />
> >>> ...
> >>> </measure>
> >>> ...
> >>> </ending>
> >>> <ending n="2">
> >>> <measure n="8">
> >>> ...
> >>> <note dur="8" oct="1" pname="a" accid.ges="f" tie="t" />
> >>> ...
> >>> </measure>
> >>> ...
> >>> </ending>
> >>>
> >>> In both approaches, Verovio only renders the tie in the first ending,
> but not in the second.
> >>>
> >>> Is there a better way to encode such overlapping slurs/ties, in a way
> that Verovio actually renders? Would a modified tie element help that
> allows for multiple endids in such cases? Or is there another correct way
> of encoding this?
> >>>
> >>> All the best,
> >>> Werner & David
> >>>
> >>>
> >>> --
> >>> Dr. Werner Goebl
> >>> Associate Professor
> >>> Department of Music Acoustics – Wiener Klangstil
> >>> University of Music and Performing Arts Vienna
> >>> Anton-von-Webern-Platz 1
> >>> 1030 Vienna, Austria
> >>> Tel. +43 1 71155 4311
> >>> Fax. +43 1 71155 4399
> >>> http://iwk.mdw.ac.at/goebl
> >>>
> <Beethoven_Op57_2_excerpt.png>_______________________________________________
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> >>> mei-l at lists.uni-paderborn.de
> >>> https://lists.uni-paderborn.de/mailman/listinfo/mei-l
> >> _______________________________________________
> >> mei-l mailing list
> >> mei-l at lists.uni-paderborn.de
> >> https://lists.uni-paderborn.de/mailman/listinfo/mei-l
> >
> > --
> > Dr. Werner Goebl
> > Associate Professor
> > Department of Music Acoustics – Wiener Klangstil
> > University of Music and Performing Arts Vienna
> > Anton-von-Webern-Platz 1
> > 1030 Vienna, Austria
> > Tel. +43 1 71155 4311
> > Fax. +43 1 71155 4399
> > http://iwk.mdw.ac.at/goebl
> >
> <Beethoven_Op57_2_excerpt.mei>_______________________________________________
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>
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