<div dir="ltr">Hello Charbel,<div><br></div><div>Yes, half-flats are possible in MEI and verovio.  Here is the MEI list of accidentals:</div><div><br></div><div><a href="http://music-encoding.org/guidelines/v3/data-types/data.accidental.explicit.html">http://music-encoding.org/guidelines/v3/data-types/data.accidental.explicit.html</a><br></div><div><br></div><div><span style="font-size:small;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">("1qf" is the name of the "one quarter-tone flat" in MEI data)</span><br></div><div><span style="font-size:small;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div>> <span style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">if yes can we also encode this half-flat at the beginning of the musical piece (armature) in order to apply it to a specified string in the musical measure?</span></div><div><span style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Do you mean include half-flats in the key signature, or another graphical system for the instrument tuning?  The first should be possible in MEI, although I do not know if it is implemented in verovio, the second is unlikely implemented in verovio, and probably not in MEI.</span></div><div><br></div><div><br></div><div>Here is an example with half-flats.  The rendering in verovio:</div><div><br></div><div><div><img src="cid:ii_jj5kt5770_1645fc77293b135c" width="326" height="412"><br></div><div><br></div><div>The MEI encoding:</div><div><br></div><div><div><?xml version="1.0" encoding="UTF-8"?></div><div><?xml-model href="<a href="http://music-encoding.org/schema/4.0.0/mei-all.rng">http://music-encoding.org/schema/4.0.0/mei-all.rng</a>" type="application/xml" schematypens="<a href="http://relaxng.org/ns/structure/1.0">http://relaxng.org/ns/structure/1.0</a>"?></div><div><?xml-model href="<a href="http://music-encoding.org/schema/4.0.0/mei-all.rng">http://music-encoding.org/schema/4.0.0/mei-all.rng</a>" type="application/xml" schematypens="<a href="http://purl.oclc.org/dsdl/schematron">http://purl.oclc.org/dsdl/schematron</a>"?></div><div><mei xmlns="<a href="http://www.music-encoding.org/ns/mei">http://www.music-encoding.org/ns/mei</a>" meiversion="4.0.0"></div><div>    <meiHead></div><div>        <fileDesc></div><div>            <titleStmt></div><div>                <title /></div><div>            </titleStmt></div><div>            <pubStmt /></div><div>        </fileDesc></div><div>        <encodingDesc></div><div>            <appInfo></div><div>                <application isodate="2018-07-03T12:47:10" version="2.0.0-dev-f99f5ee"></div><div>                    <name>Verovio</name></div><div>                    <p>Transcoded from Humdrum</p></div><div>                </application></div><div>            </appInfo></div><div>        </encodingDesc></div><div>        <workDesc></div><div>            <work></div><div>                <titleStmt></div><div>                    <title /></div><div>                </titleStmt></div><div>            </work></div><div>        </workDesc></div><div>    </meiHead></div><div>    <music></div><div>        <body></div><div>            <mdiv xml:id="mdiv-0000001806357079"></div><div>                <score xml:id="score-0000001745921925"></div><div>                    <scoreDef xml:id="scoredef-0000000200022524"></div><div>                        <staffGrp xml:id="staffgrp-0000001765537353"></div><div>                            <staffDef xml:id="staffdef-0000001889892317" clef.shape="G" clef.line="2" n="1" lines="5"></div><div>                                <label xml:id="label-0000000078207176" /></div><div>                            </staffDef></div><div>                        </staffGrp></div><div>                    </scoreDef></div><div>                    <section xml:id="section-L1F1"></div><div>                        <measure xml:id="measure-L1" right="dbl" n="0" type="m-0"></div><div>                            <staff xml:id="staff-0000001901581718" n="1"></div><div>                                <layer xml:id="layer-L1F1N1" n="1"></div><div>                                    <note xml:id="note-L3F1" type="qon-0 qoff-1 pname-d acc-n oct-4 b40c-8 b12c-2 " dur="4" oct="4" pname="d" accid.ges="n" /></div><div>                                    <note xml:id="note-L4F1" type="qon-1 qoff-2 pname-e acc-f oct-4 b40c-13 b12c-3 " dur="4" oct="4" pname="e" accid="1qf" /></div><div>                                    <note xml:id="note-L5F1" type="qon-2 qoff-3 pname-f acc-n oct-4 b40c-19 b12c-5 " dur="4" oct="4" pname="f" accid.ges="n" /></div><div>                                    <note xml:id="note-L6F1" type="qon-3 qoff-4 pname-g acc-n oct-4 b40c-25 b12c-7 " dur="4" oct="4" pname="g" accid.ges="n" /></div><div>                                    <note xml:id="note-L7F1" type="qon-4 qoff-5 pname-a acc-n oct-4 b40c-31 b12c-9 " dur="4" oct="4" pname="a" accid.ges="n" /></div><div>                                    <note xml:id="note-L8F1" type="qon-5 qoff-6 pname-b acc-f oct-4 b40c-36 b12c-10 " dur="4" oct="4" pname="b" accid="f" /></div><div>                                    <note xml:id="note-L9F1" type="qon-6 qoff-7 pname-c acc-n oct-5 b40c-2 b12c-0 " dur="4" oct="5" pname="c" accid.ges="n" /></div><div>                                    <note xml:id="note-L10F1" type="qon-7 qoff-8 pname-d acc-n oct-5 b40c-8 b12c-2 " dur="4" oct="5" pname="d" accid.ges="n" /></div><div>                                </layer></div><div>                            </staff></div><div>                            <dir xml:id="dir-L3F1" place="above" staff="1" tstamp="1.000000"></div><div>                                <rend xml:id="rend-0000000740703624" fontstyle="normal">Bayati</rend></div><div>                            </dir></div><div>                        </measure></div><div>                        <measure xml:id="measure-L11" right="dbl" type="m--1"></div><div>                            <staff xml:id="staff-L11F1N1" n="1"></div><div>                                <layer xml:id="layer-L11F1N1" n="1"></div><div>                                    <note xml:id="note-L13F1" type="qon-8 qoff-9 pname-c acc-n oct-4 b40c-2 b12c-0 " dur="4" oct="4" pname="c" accid.ges="n" /></div><div>                                    <note xml:id="note-L14F1" type="qon-9 qoff-10 pname-d acc-n oct-4 b40c-8 b12c-2 " dur="4" oct="4" pname="d" accid.ges="n" /></div><div>                                    <note xml:id="note-L15F1" type="qon-10 qoff-11 pname-e acc-f oct-4 b40c-13 b12c-3 " dur="4" oct="4" pname="e" accid="1qf" /></div><div>                                    <note xml:id="note-L16F1" type="qon-11 qoff-12 pname-f acc-n oct-4 b40c-19 b12c-5 " dur="4" oct="4" pname="f" accid.ges="n" /></div><div>                                    <note xml:id="note-L17F1" type="qon-12 qoff-13 pname-g acc-n oct-4 b40c-25 b12c-7 " dur="4" oct="4" pname="g" accid.ges="n" /></div><div>                                    <note xml:id="note-L18F1" type="qon-13 qoff-14 pname-a acc-n oct-4 b40c-31 b12c-9 " dur="4" oct="4" pname="a" accid.ges="n" /></div><div>                                    <note xml:id="note-L19F1" type="qon-14 qoff-15 pname-b acc-f oct-4 b40c-36 b12c-10 " dur="4" oct="4" pname="b" accid="1qf" /></div><div>                                    <note xml:id="note-L20F1" type="qon-15 qoff-16 pname-c acc-n oct-5 b40c-2 b12c-0 " dur="4" oct="5" pname="c" accid.ges="n" /></div><div>                                </layer></div><div>                            </staff></div><div>                            <dir xml:id="dir-L13F1" place="above" staff="1" tstamp="1.000000"></div><div>                                <rend xml:id="rend-0000002144627832" fontstyle="normal">Rast</rend></div><div>                            </dir></div><div>                        </measure></div><div>                        <measure xml:id="measure-L21" type="m--1"></div><div>                            <staff xml:id="staff-L21F1N1" n="1"></div><div>                                <layer xml:id="layer-L21F1N1" n="1"></div><div>                                    <note xml:id="note-L23F1" type="qon-16 qoff-17 pname-d acc-n oct-4 b40c-8 b12c-2 " dur="4" oct="4" pname="d" accid.ges="n" /></div><div>                                    <note xml:id="note-L24F1" type="qon-17 qoff-18 pname-e acc-f oct-4 b40c-13 b12c-3 " dur="4" oct="4" pname="e" accid="1qf" /></div><div>                                    <note xml:id="note-L25F1" type="qon-18 qoff-19 pname-f acc-n oct-4 b40c-19 b12c-5 " dur="4" oct="4" pname="f" accid.ges="n" /></div><div>                                    <note xml:id="note-L26F1" type="qon-19 qoff-20 pname-g acc-f oct-4 b40c-24 b12c-6 " dur="4" oct="4" pname="g" accid="f" /></div><div>                                    <note xml:id="note-L27F1" type="qon-20 qoff-21 pname-a acc-n oct-4 b40c-31 b12c-9 " dur="4" oct="4" pname="a" accid.ges="n" /></div><div>                                    <note xml:id="note-L28F1" type="qon-21 qoff-22 pname-b acc-f oct-4 b40c-36 b12c-10 " dur="4" oct="4" pname="b" accid="f" /></div><div>                                    <note xml:id="note-L29F1" type="qon-22 qoff-23 pname-c acc-n oct-5 b40c-2 b12c-0 " dur="4" oct="5" pname="c" accid.ges="n" /></div><div>                                    <note xml:id="no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<div dir="ltr">
<div id="m_-269542393506163234divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif" dir="ltr">
<p style="margin-top:0;margin-bottom:0">To whom it may concern,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">I would like to ask if the Half flat (Arabic quarter-tone flat) is available now in MEI in order to encode it as MEI accidental and if verovio supports the rendering of this feature?</p>
<p style="margin-top:0;margin-bottom:0">please provide an example (.svg) . if yes can we also encode this half-flat at the beginning of the musical piece (armature) in order to apply it to a specified string in the musical measure?</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0"><span>Thank you for your cooperation</span>,</p>
<p style="margin-top:0;margin-bottom:0">Charbel El Achkar</p>
</div>
</div>

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<br></blockquote></div><br></div>