Hi people, Yesterday I wrote a small C program (~400 lines) to generate macros for the abc preprocessor *abcpp* <http://abcplus.sourceforge.net/#abcpp>.
It is intended to make easier write microtonal music. However, I think it can be useful also for percussion instruments and perhaps even for tablatures. These are the steps: 0) Write a setup file to set the macros. 1) Generate the macros to an .abh file (abcpp header with macros). 2) Write the ABC music using the macros, after #include the .abh file. 3) Preprocess the ABC file. 4) Convert the ABC to MIDI. 5) Retune the MIDI file with scala <http://www.xs4all.nl/~huygensf/scala/>. To test the program, I used an arrangement of a Christmas carol by Heinz Bohlen, from: <http://members.aol.com/bpsite/tonality.html> (<http://members.aol.com/bpsite/EskommteinSchiff.jpg>). Here is the setup file: {-----------------------------} centre:60 {MIDI number for the pitch 0} mod:13 {number of degrees for each modulo instance} transp:-6 {transposition} range:-30 30 {range relative to the center pitch} alias:1 2 {use the columns 1 and 2 (nr from 0) to generate macros} updown: ' , {additional symbols for high and low pitches} {Bohlen-Pierce (BP) scale using i-gamma names} 0: i 1: l 2: lis mes 3: m 4: n 5: nis os 6: o 7: r 8: s 9: sis tes 10: t 11: tis us 12: u {} {-----------------------------} Here are the auto-generated macros (BP to ABC): # ===================={ BEGIN OF DEFINITIONS #define {s,} ^C, #define {sis,} =D, #define {tes,} =D, #define {t,} ^D, #define {tis,} =E, #define {us,} =E, #define {u,} =F, #define {i} ^F, #define {l} =G, #define {lis} ^G, #define {mes} ^G, #define {m} =A, #define {n} ^A, #define {nis} =B, #define {os} =B, #define {o} =C #define {r} ^C #define {s} =D #define {sis} ^D #define {tes} ^D #define {t} =E #define {tis} =F #define {us} =F #define {u} ^F #define {i'} =G #define {l'} ^G #define {lis'} =A #define {mes'} =A #define {m'} ^A #define {n'} =B #define {nis'} =c #define {os'} =c #define {o'} ^c #define {r'} =d #define {s'} ^d # ====================} END OF DEFINITIONS (TOTAL: 35) Here is the original ABC code (with macros): #include "mapa-bp.abh" X:1 T:s-delta T:Fassung 1 C:Arr.: Heinz Bohlen R:carol M:3/4 L:1/4 Q:1/4=90 K:C % V:1 %%MIDI program 71 % Clarinet %%MIDI beat 90 85 85 1 {s} | {s}2 {s} | {us}2 {us} | {l'} {n'} {os'} | {os'}2 {os'} | {us}2 {us} | {s}2 {us} | [M:C] {l'}3 {l'} | {os'}{r'}{s'}{s'} | {r'}/{os'}/{n'}/{mes'}/ {l'} {us} | {l'} {us} {us} {tes} | {s}3 || V:2 %%MIDI program 70 % Bassoon %%MIDI beat 90 85 85 1 {s,} | {s,}2 {s,} | {s,}2 {s,} | {s,} {us,} {l} | {l}2 {l} | {n}2 {n} | {s}2 {r} | [M:C] {os}3 {os} | {l} {us,} {s,} {l} | {us,}2 {s,} {n} | {l} {us} {s} {r} | {s}3 || And, finally, the output ABC code (after substituting the macros): X:1 T:s-delta T:Fassung 1 C:Arr.: Heinz Bohlen R:carol M:3/4 L:1/4 Q:1/4=90 K:C % V:1 %%MIDI program 71 % Clarinet %%MIDI beat 90 85 85 1 =D | =D2 =D | =F2 =F | ^G =B =c | =c2 =c | =F2 =F | =D2 =F | [M:C] ^G3 ^G | =c=d^d^d | =d/=c/=B/=A/ ^G =F | ^G =F =F ^D | =D3 || V:2 %%MIDI program 70 % Bassoon %%MIDI beat 90 85 85 1 ^C, | ^C,2 ^C, | ^C,2 ^C, | ^C, =E, =G, | =G,2 =G, | ^A,2 ^A, | =D2 ^C | [M:C] =B,3 =B, | =G, =E, ^C, =G, | =E,2 ^C, ^A, | =G, =F =D ^C | =D3 || The scala commands to retune the MIDI file are: equaltemp 13 3 example/midi in.mid out.mid Shortly I will put the program online. Cheers, Hudson -- Hudson Lacerda <http://geocities.yahoo.com.br/hfmlacerda/> *Não deixe seu voto sumir! http://www.votoseguro.org/ *Apóie o Manifesto: http://www.votoseguro.com/alertaprofessores/ == THE WAR IN IRAQ COSTS == http://nationalpriorities.org/index.php?option=com_wrapper&Itemid=182 _______________________________________________________ Yahoo! doce lar. Faça do Yahoo! sua homepage. http://br.yahoo.com/homepageset.html Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/abcusers/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
