Wanted a simpler how-to for Arabic/Turkish score transcriptions

[topchyan]

I am working with transcriptions of classic ottoman music, which makes heavy use of microtone notation using EasyABC/abcm2ps in Linux. The problem I encounter is complexity of mapping accidentals to play properly in abc2midi as well. So far I found only what's mentioned on in abcmidi documentation. However when I reference this configuration even though notes may be displaying okay, they don't sound properly in MIDI. I am looking for a more simple how-to on how to use configuration settings. A cheat-sheet I found for microtones looks like this.

At least I would like to configure my scores to properly show and play my most common notes like what's shown there as g4+50, a4-50, g4+33, gs4-33, gs4+33,a4-33,a4+33, bb4+33

Thanks for any help.

[moinejf]

Some years ago (2020), we, Seymour Shlien (abcMIDI), Hudson Lacerda (well-known musician in Brazil) and I (abcm2ps, abc2svg), had long exchanges about the Turkish Makams Scales. Finally, we agreed in common definitions. Here are the ones for abcMIDI and abcm2ps:

%--------------- header --------------- I:abc-charset utf-8

% accidentals Arel - Ezgel %%beginps /sbar {M -4.0 6 RM 5.0 2 RL 1 SLW stroke}! /hbar {M -3.0 -1.5 RM 7.0 3 RL 1.6 SLW stroke}!

/ft15156 {ft0}! % _60/53 - b5 /ft12084 {2 copy ft0 sbar}! % _48/53 - b4 /ft9012 {2 copy ft0 sbar}! % _36/53 - b3 /ft5940 {ft1}! % _24/53 - b2 /ft2868 {ft1}! % _12/53 - b1

/sh2868 {sh1}! % ^12/53 - #1 /sh5940 {sh1}! % ^24/53 - #2 /sh9012 {sh0}! % ^36/53 - #3 /sh12084 {sh0}! % ^48/53 - #4 /sh15156 {2 copy gsave T 0 0 1.2 dup scale sh1 grestore hbar}! % ^60/53 - #5 %%endps

%%MIDI temperamentequal 53 // 53-TET Turkish scale

%--------------- end header ---------------

Otherwise, abc2svg includes natively the Arel - Ezgel accidentals when using

%%MIDI temperamentequal 53

In the ABC source, the accidentals are (as written in the PS definitions):

_60/53 for b5 _48/53 for b4 _36/53 for b3 _24/53 for b2 _12/53 for b1 ^12/53 for #1 ^24/53 for #2 ^36/53 for #3 ^48/53 for #4

Here is a source example with abc2svg

http://moinejf.free.fr/abc/sipihr_pesrev.html

[topchyan]

Thanks for quick response! Will be back with further questions.

On Sat, Nov 18, 2023, 10:49 Jean-François Moine @.***> wrote:

Some years ago (2020), we, Seymour Shlien (abcMIDI), Hudson Lacerda (well-known musician in Brazil) and I (abcm2ps, abc2svg), had long exchanges about the Turkish Makams Scales. Finally, we agreed in common definitions. Here are the ones for abcMIDI and abcm2ps:

%--------------- header --------------- I:abc-charset utf-8

% accidentals Arel - Ezgel %%beginps /sbar {M -4.0 6 RM 5.0 2 RL 1 SLW stroke}! /hbar {M -3.0 -1.5 RM 7.0 3 RL 1.6 SLW stroke}!

/ft15156 {ft0}! % _60/53 - b5 /ft12084 {2 copy ft0 sbar}! % _48/53 - b4 /ft9012 {2 copy ft0 sbar}! % _36/53 - b3 /ft5940 {ft1}! % _24/53 - b2 /ft2868 {ft1}! % _12/53 - b1

/sh2868 {sh1}! % ^12/53 - #1 https://github.com/lewdlime/abcm2ps/issues/1 /sh5940 {sh1}! % ^24/53 - #2 https://github.com/lewdlime/abcm2ps/pull/2 /sh9012 {sh0}! % ^36/53 - #3 https://github.com/lewdlime/abcm2ps/issues/3 /sh12084 {sh0}! % ^48/53 - #4 https://github.com/lewdlime/abcm2ps/issues/4 /sh15156 {2 copy gsave T 0 0 1.2 dup scale sh1 grestore hbar}! % ^60/53 - #5 https://github.com/lewdlime/abcm2ps/issues/5 %%endps

%%MIDI temperamentequal 53 // 53-TET Turkish scale

%--------------- end header ---------------

Otherwise, abc2svg includes natively the Arel - Ezgel accidentals when using

%%MIDI temperamentequal 53

In the ABC source, the accidentals are (as written in the PS definitions):

_60/53 for b5 _48/53 for b4 _36/53 for b3 _24/53 for b2 _12/53 for b1 ^12/53 for #1 https://github.com/lewdlime/abcm2ps/issues/1 ^24/53 for #2 https://github.com/lewdlime/abcm2ps/pull/2 ^36/53 for #3 https://github.com/lewdlime/abcm2ps/issues/3 ^48/53 for #4 https://github.com/lewdlime/abcm2ps/issues/4

Here is a source example with abc2svg

http://moinejf.free.fr/abc/sipihr_pesrev.html

— Reply to this email directly, view it on GitHub https://github.com/lewdlime/abcm2ps/issues/115#issuecomment-1817542600, or unsubscribe https://github.com/notifications/unsubscribe-auth/AD6AZEEC7BVBJA326SL5VFTYFDKIFAVCNFSM6AAAAAA7Q7AFESVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMJXGU2DENRQGA . You are receiving this because you authored the thread.Message ID: @.***>

[topchyan]

I am trying to understand how the header code you mention co-relates with the individual accidentals from the score.

So far I have been using another set of codes for accidentals

My sample scale now looks like this

and it only starts showing up correctly when I disable this MIDI directive

%%MIDI temperamentequal 53 // 53-TET Turkish scale

All in all, I would like to stick with one modern and consistent markup for the music which is expected to last for a while.

Thanks for your replies and help!

[moinejf]

I added the correct PostScript definition of the turkish accidentals in the %%MIDI documentation. In fact, all about the microtone accidentals is in this page.

There are two ways for writing microtone accidentals in ABC (at least in abcm2ps, abc2svg and txtmus).

The common way is to specify a fraction of a semi-tone before the accidental, as "_23/44B". In this case, there is no notion of scale or temperament.

The command "%%MIDI temperamentequal " divides the octave into intervals. These intervals are mapped to the 12 notes of the octave for the scale to be the closest to a well tempered scale. In this case, as the microtone divider is known, only the numerator appears in the accidentals like "_2B".

Mixing both ways is not a good idea! You may also note that, with temperamentequal, an accidental without a numerator as "_B" is ambiguous.

[topchyan]

Could you share the link to the updated %%MIDI documentation page?

On Sun, Nov 19, 2023, 12:53 Jean-François Moine @.***> wrote:

I added the correct PostScript definition of the turkish accidentals in the %%MIDI documentation. In fact, all about the microtone accidentals is in this page.

There are two ways for writing microtone accidentals in ABC (at least in abcm2ps, abc2svg and txtmus).

The common way is to specify a fraction of a semi-tone before the accidental, as "_23/44B". In this case, there is no notion of scale or temperament.

The command "%%MIDI temperamentequal " divides the octave into intervals. These intervals are mapped to the 12 notes of the octave for the scale to be the closest to a well tempered scale. In this case, as the microtone divider is known, only the numerator appears in the accidentals like "_2B".

Mixing both ways is not a good idea! You may also note that, with temperamentequal, an accidental without a numerator as "_B" is ambiguous.

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[timmbo9]

abc2svg MIDImoinejf.free.frTimmOn Nov 19, 2023, at 4:36 PM, topchyan @.***> wrote: Could you share the link to the updated %%MIDI documentation page?

On Sun, Nov 19, 2023, 12:53 Jean-François Moine @.***>

wrote:

I added the correct PostScript definition of the turkish accidentals

in the %%MIDI documentation. In fact, all about the microtone

accidentals is in this page.

There are two ways for writing microtone accidentals in ABC (at least in

abcm2ps, abc2svg and txtmus).

The common way is to specify a fraction of a semi-tone before the

accidental, as "_23/44B". In this case, there is no notion of scale or

temperament.

The command "%%MIDI temperamentequal " divides the octave into

intervals. These intervals are mapped to the 12 notes of the

octave for the scale to be the closest to a well tempered scale.

In this case, as the microtone divider is known, only the numerator

appears in the accidentals like "_2B".

Mixing both ways is not a good idea! You may also note that, with

temperamentequal, an accidental without a numerator as "_B" is

ambiguous.

—

Reply to this email directly, view it on GitHub

https://github.com/lewdlime/abcm2ps/issues/115#issuecomment-1817930447,

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[moinejf]

You are right, in the documentation index, %%MIDI does not appear as being a abcm2ps parameter.    http://moinejf.free.fr/abcm2ps-doc/MIDI.html

[topchyan]

Jef could you please add an abc2svg equivalent of this? I am not sure how to define these in %%beginsvg..%%endsvg. Thanks!

% abcm2ps PostScript definition of the Arel - Ezgel accidentals

%%beginps
/sbar {M -4 6 RM 5 2 RL 1 SLW stroke}!
/hbar {M -3 -1.5 RM 7 3 RL 1.6 SLW stroke}!
/num2 {M 2.0 6.0 RM /Times-Roman 10 selectfont (2) show}!
/num3 {M 4.0 6.0 RM /Times-Roman 10 selectfont (3) show}!

/ft15156 {ft0}! % _60/53 - _5
/ft12084 {2 copy ft0 sbar}! % _48/53 - _4
/ft9012 {2 copy ft0 2 copy num3 sbar}! % _36/53 - _3
/ft5940 {2 copy ft1 num2}! % _24/53 - _2
/ft2868 {ft1}! % _12/53 - _1

/sh2868 {sh1}! % ^12/53 - ^1
/sh5940 {2 copy sh1 num2}! % ^24/53 - ^2
/sh9012 {2 copy sh0 num3}! % ^36/53 - ^3
/sh12084 {sh0}! % ^48/53 - ^4
/sh15156 {2 copy gsave T 0 0 1.2 dup scale sh1 grestore hbar}! % ^60/53 - ^5
%%endps

X:3
%%MIDI temperamentequal 53
M:none
L:1/4
K:C
_B _5B _4B _3B _2B _1B =B | =c ^1c ^2c ^3c ^4c ^5c ^c |

[moinejf]

That's simple: just remove the %%beginps..%%endps sequence! (the definition of the Arel - Ezgel accidentals are included by the command "%%MIDI temperamentequal 53" - I updated the documentation)