ottava lines - Githubissues

th-we commented 7 years ago

In MEI it seems common to encode written pitch with @pname/@oct so to say "ignoring" ottava brackets (at least that's what one find in the samples). Sounding pitch can optionally be encoded with @pname.ges and @oct.ges. Lilypond however wants the resulting transposed pitch encoded.

That's not really a problem - I'm currently thinking that I might wrap notes of an ottava bracket inside a \transpose. What I don't understand is what \unset Staff.middleCPosition actually does. In any case it does weird things, e.g. for this example:

<mei xmlns="http://www.music-encoding.org/ns/mei" meiversion="3.0.0">
  <meiHead>
    <fileDesc>
      <titleStmt>
        <title/>
      </titleStmt>
      <pubStmt/>
    </fileDesc>
  </meiHead>
  <music>
    <body>
      <mdiv>
        <score>
          <scoreDef meter.count="4" meter.unit="4">
            <staffGrp>
              <staffDef n="1" clef.line="2" clef.shape="G" lines="5"/>
              <staffDef n="2" clef.line="4" clef.shape="F" lines="5"/>
            </staffGrp>
          </scoreDef>
          <section>
            <measure n="1">
              <staff n="1">
                <layer n="1">
                  <note pname="c" oct="4" dur="2" oct.ges="3" xml:id="note1"/>
                  <note pname="c" oct="4" dur="2" oct.ges="3" xml:id="note2"/>
                </layer>
              </staff>
              <staff n="2">
                <layer n="1">
                  <note pname="c" oct="4" dur="2" oct.ges="3" xml:id="note3"/>
                  <note pname="c" oct="4" dur="2" oct.ges="3" xml:id="note4"/>
                </layer>
              </staff>
              <octave dis="8" dis.place="below" startid="#note1" endid="#note1" staff="1"/>
              <octave dis="8" dis.place="above" startid="#note2" endid="#note2" staff="1"/>
              <octave dis="8" dis.place="below" startid="#note3" endid="#note3" staff="2"/>
              <octave dis="8" dis.place="above" startid="#note4" endid="#note4" staff="2"/>
            </measure>
          </section>
        </score>
      </mdiv>
    </body>
  </music>
</mei>

bildschirmfoto vom 2017-03-12 19-13-06

My plan would be:

Get rid of \unset Staff.middleCPosition and use \transpose instead
Introduce a switch that makes the \transpose optional as I'm not sure how thought through the convention found in the sample library is and one might want to encode "sounding" pitch rather than written pitch.

Any better ideas?

rettinghaus commented 7 years ago

Originally I didn't want to rely on oct.ges. So I tried to "fake" it (which obviously only works with standard G clefs). I'll give it some thoughts.

th-we commented 7 years ago

I'll try to take care of it by using the \transpose approach, at least to the extend that's manageable right now. It might be restricted to <octave> with @startid/@endid and a single voice. That would at least cover some use cases, but not others.

rettinghaus commented 7 years ago

this should be ok now

rettinghaus / MEILER

ottava lines #25