[MEI-L] Half flat (Arabic quarter-tone flat)

Charbel El Achkar charbelelachkar at hotmail.com
Tue Jul 3 13:30:39 CEST 2018


Hello Craig,


First of all, thank you for replying.

In my question concerning the half-flat, I meant the Arabic half-flat (Arabic quarter-tone flat) that has the same symbol as the one shown in the picture above.

The one that you sent to me is the Turkish half-flat that has a different symbol than this one. Does this (Arabic half-flat) exist now in MEI accidental and can we include it in the key signature? Can verovio also support the rendering of the half-flat described above?


Thank you in advance,

Charbel El Achkar


________________________________
From: Craig Sapp <craigsapp at gmail.com>
Sent: Tuesday, July 3, 2018 1:59 PM
To: Music Encoding Initiative
Cc: charbelelachkar at hotmail.com
Subject: Re: [MEI-L] Half flat (Arabic quarter-tone flat)

Hello Charbel,

Yes, half-flats are possible in MEI and verovio.  Here is the MEI list of accidentals:

http://music-encoding.org/guidelines/v3/data-types/data.accidental.explicit.html
data.ACCIDENTAL.EXPLICIT<http://music-encoding.org/guidelines/v3/data-types/data.accidental.explicit.html>
music-encoding.org
:scroll: The Music Encoding Initiative Guidelines




("1qf" is the name of the "one quarter-tone flat" in MEI data)

> 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?

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.


Here is an example with half-flats.  The rendering in verovio:

[cid:ii_jj5kt5770_1645fc77293b135c]

The MEI encoding:

<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="http://music-encoding.org/schema/4.0.0/mei-all.rng" type="application/xml" schematypens="http://relaxng.org/ns/structure/1.0"?>
<?xml-model href="http://music-encoding.org/schema/4.0.0/mei-all.rng" type="application/xml" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<mei xmlns="http://www.music-encoding.org/ns/mei" meiversion="4.0.0">
    <meiHead>
        <fileDesc>
            <titleStmt>
                <title />
            </titleStmt>
            <pubStmt />
        </fileDesc>
        <encodingDesc>
            <appInfo>
                <application isodate="2018-07-03T12:47:10" version="2.0.0-dev-f99f5ee">
                    <name>Verovio</name>
                    <p>Transcoded from Humdrum</p>
                </application>
            </appInfo>
        </encodingDesc>
        <workDesc>
            <work>
                <titleStmt>
                    <title />
                </titleStmt>
            </work>
        </workDesc>
    </meiHead>
    <music>
        <body>
            <mdiv xml:id="mdiv-0000001806357079">
                <score xml:id="score-0000001745921925">
                    <scoreDef xml:id="scoredef-0000000200022524">
                        <staffGrp xml:id="staffgrp-0000001765537353">
                            <staffDef xml:id="staffdef-0000001889892317" clef.shape="G" clef.line="2" n="1" lines="5">
                                <label xml:id="label-0000000078207176" />
                            </staffDef>
                        </staffGrp>
                    </scoreDef>
                    <section xml:id="section-L1F1">
                        <measure xml:id="measure-L1" right="dbl" n="0" type="m-0">
                            <staff xml:id="staff-0000001901581718" n="1">
                                <layer xml:id="layer-L1F1N1" n="1">
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                </layer>
                            </staff>
                            <dir xml:id="dir-L3F1" place="above" staff="1" tstamp="1.000000">
                                <rend xml:id="rend-0000000740703624" fontstyle="normal">Bayati</rend>
                            </dir>
                        </measure>
                        <measure xml:id="measure-L11" right="dbl" type="m--1">
                            <staff xml:id="staff-L11F1N1" n="1">
                                <layer xml:id="layer-L11F1N1" n="1">
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                </layer>
                            </staff>
                            <dir xml:id="dir-L13F1" place="above" staff="1" tstamp="1.000000">
                                <rend xml:id="rend-0000002144627832" fontstyle="normal">Rast</rend>
                            </dir>
                        </measure>
                        <measure xml:id="measure-L21" type="m--1">
                            <staff xml:id="staff-L21F1N1" n="1">
                                <layer xml:id="layer-L21F1N1" n="1">
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <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" />
                                    <note xml:id="note-L30F1" type="qon-23 qoff-24 pname-d acc-n oct-5 b40c-8 b12c-2 " dur="4" oct="5" pname="d" accid.ges="n" />
                                </layer>
                            </staff>
                            <dir xml:id="dir-L23F1" place="above" staff="1" tstamp="1.000000">
                                <rend xml:id="rend-0000000817275699" fontstyle="normal">Sabba</rend>
                            </dir>
                        </measure>
                        <measure xml:id="measure-L31" right="end" type="m--1">
                            <staff xml:id="staff-L31F1N1" n="1">
                                <layer xml:id="layer-L31F1N1" n="1">
                                    <note xml:id="note-L33F1" type="qon-24 qoff-25 pname-e acc-f oct-4 b40c-13 b12c-3 " dur="4" oct="4" pname="e" accid="1qf" />
                                    <note xml:id="note-L34F1" type="qon-25 qoff-26 pname-f acc-n oct-4 b40c-19 b12c-5 " dur="4" oct="4" pname="f" accid.ges="n" />
                                    <note xml:id="note-L35F1" type="qon-26 qoff-27 pname-g acc-n oct-4 b40c-25 b12c-7 " dur="4" oct="4" pname="g" accid.ges="n" />
                                    <note xml:id="note-L36F1" type="qon-27 qoff-28 pname-a acc-n oct-4 b40c-31 b12c-9 " dur="4" oct="4" pname="a" accid.ges="n" />
                                    <note xml:id="note-L37F1" type="qon-28 qoff-29 pname-b acc-f oct-4 b40c-36 b12c-10 " dur="4" oct="4" pname="b" accid="1qf" />
                                    <note xml:id="note-L38F1" type="qon-29 qoff-30 pname-c acc-n oct-5 b40c-2 b12c-0 " dur="4" oct="5" pname="c" accid.ges="n" />
                                    <note xml:id="note-L39F1" type="qon-30 qoff-31 pname-d acc-n oct-5 b40c-8 b12c-2 " dur="4" oct="5" pname="d" accid.ges="n" />
                                    <note xml:id="note-L40F1" type="qon-31 qoff-32 pname-e acc-f oct-5 b40c-13 b12c-3 " dur="4" oct="5" pname="e" accid="1qf" />
                                </layer>
                            </staff>
                            <dir xml:id="dir-L33F1" place="above" staff="1" tstamp="1.000000">
                                <rend xml:id="rend-0000000800832592" fontstyle="normal">Siga</rend>
                            </dir>
                        </measure>
                    </section>
                </score>
            </mdiv>
        </body>
    </music>
</mei>


-=+Craig





On 3 July 2018 at 12:37, Charbel El Achkar <charbelelachkar at hotmail.com<mailto:charbelelachkar at hotmail.com>> wrote:

To whom it may concern,


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?

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?


Thank you for your cooperation,

Charbel El Achkar

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