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music.lua
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music.lua
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music = {}
function music.init()
music.root = config.settings.root
music.scale = config.settings.scale
music.octaves = config.settings.octaves
music.transpose = 0
music.scale_name = ""
music.scale_names = {}
for k, v in pairs(musicutil.SCALES) do
music.scale_names[k] = musicutil.SCALES[k].name
end
music.scale_notes = {}
music:set_scale(music.scale)
music.database = {
{ m = -12, i = "C-2", f = 4.0879, y = "c-2" },
{ m = -11, i = "C#-2", f = 4.331, y = "cs-2"},
{ m = -10, i = "D-2", f = 4.5885, y = "d-2" },
{ m = -9, i = "D#-2", f = 4.8614, y = "ds-2"},
{ m = -8, i = "E-2", f = 5.1504, y = "e-2" },
{ m = -7, i = "F-2", f = 5.4567, y = "f-2" },
{ m = -6, i = "F#-2", f = 5.7812, y = "fs-2"},
{ m = -5, i = "G-2", f = 6.1249, y = "g-2" },
{ m = -4, i = "G#-2", f = 6.4891, y = "gs-2"},
{ m = -3, i = "A-2", f = 6.875, y = "a-2" },
{ m = -2, i = "A#-2", f = 7.2838, y = "as-2"},
{ m = -1, i = "B-2", f = 7.7169, y = "b-2" },
{ m = 0, i = "C-1", f = 8.1758, y = "c-1" },
{ m = 1, i = "C#-1", f = 8.662, y = "cs-1"},
{ m = 2, i = "D-1", f = 9.177, y = "d-1" },
{ m = 3, i = "D#-1", f = 9.7227, y = "ds-1"},
{ m = 4, i = "E-1", f = 10.3009, y = "e-1" },
{ m = 5, i = "F-1", f = 10.9134, y = "f-1" },
{ m = 6, i = "F#-1", f = 11.5623, y = "fs-1"},
{ m = 7, i = "G-1", f = 12.2499, y = "g-1" },
{ m = 8, i = "G#-1", f = 12.9783, y = "gs-1"},
{ m = 9, i = "A-1", f = 13.75, y = "a-1" },
{ m = 10, i = "A#-1", f = 14.5676, y = "as-1"},
{ m = 11, i = "B-1", f = 15.4339, y = "b-1" },
{ m = 12, i = "C0", f = 16.351, y = "c0" },
{ m = 13, i = "C#0", f = 17.324, y = "cs0" },
{ m = 14, i = "D0", f = 18.354, y = "d0" },
{ m = 15, i = "D#0", f = 19.445, y = "ds0" },
{ m = 16, i = "E0", f = 20.601, y = "e0" },
{ m = 17, i = "F0", f = 21.827, y = "f0" },
{ m = 18, i = "F#0", f = 23.124, y = "fs0" },
{ m = 19, i = "G0", f = 24.499, y = "g0" },
{ m = 20, i = "G#0", f = 25.956, y = "gs0" },
{ m = 21, i = "A0", f = 27.5, y = "a0" },
{ m = 22, i = "A#0", f = 29.135, y = "as0" },
{ m = 23, i = "B0", f = 30.868, y = "b0" },
{ m = 24, i = "C1", f = 32.703, y = "c1" },
{ m = 25, i = "C#1", f = 34.648, y = "cs1" },
{ m = 26, i = "D1", f = 36.708, y = "d1" },
{ m = 27, i = "D#1", f = 38.891, y = "ds1" },
{ m = 28, i = "E1", f = 41.203, y = "e1" },
{ m = 29, i = "F1", f = 43.654, y = "f1" },
{ m = 30, i = "F#1", f = 46.249, y = "fs1" },
{ m = 31, i = "G1", f = 48.999, y = "g1" },
{ m = 32, i = "G#1", f = 51.913, y = "gs1" },
{ m = 33, i = "A1", f = 55, y = "a1", },
{ m = 34, i = "A#1", f = 58.27, y = "as1" },
{ m = 35, i = "B1", f = 61.735, y = "b1" },
{ m = 36, i = "C2", f = 65.406, y = "c2" },
{ m = 37, i = "C#2", f = 69.296, y = "cs2" },
{ m = 38, i = "D2", f = 73.416, y = "d2" },
{ m = 39, i = "D#2", f = 77.782, y = "ds2" },
{ m = 40, i = "E2", f = 82.407, y = "e2" },
{ m = 41, i = "F2", f = 87.307, y = "f2" },
{ m = 42, i = "F#2", f = 92.499, y = "fs2" },
{ m = 43, i = "G2", f = 97.999, y = "g2" },
{ m = 44, i = "G#2", f = 103.826, y = "gs2" },
{ m = 45, i = "A2", f = 110, y = "a2" },
{ m = 46, i = "A#2", f = 116.541, y = "as2" },
{ m = 47, i = "B2", f = 123.471, y = "b2" },
{ m = 48, i = "C3", f = 130.813, y = "c3" },
{ m = 49, i = "C#3", f = 138.591, y = "cs3" },
{ m = 50, i = "D3", f = 146.832, y = "d3" },
{ m = 51, i = "D#3", f = 155.563, y = "ds3" },
{ m = 52, i = "E3", f = 164.814, y = "e3" },
{ m = 53, i = "F3", f = 174.614, y = "f3" },
{ m = 54, i = "F#3", f = 184.997, y = "fs3" },
{ m = 55, i = "G3", f = 195.998, y = "g3" },
{ m = 56, i = "G#3", f = 207.652, y = "gs3" },
{ m = 57, i = "A3", f = 220, y = "a3" },
{ m = 58, i = "A#3", f = 233.082, y = "as3" },
{ m = 59, i = "B3", f = 246.942, y = "b3" },
{ m = 60, i = "C4", f = 261.626, y = "c4" },
{ m = 61, i = "C#4", f = 277.183, y = "cs4" },
{ m = 62, i = "D4", f = 293.665, y = "d4" },
{ m = 63, i = "D#4", f = 311.127, y = "ds4" },
{ m = 64, i = "E4", f = 329.628, y = "e4" },
{ m = 65, i = "F4", f = 349.228, y = "f4" },
{ m = 66, i = "F#4", f = 369.994, y = "fs4" },
{ m = 67, i = "G4", f = 391.995, y = "g4" },
{ m = 68, i = "G#4", f = 415.305, y = "gs4" },
{ m = 69, i = "A4", f = 440, y = "a4" },
{ m = 70, i = "A#4", f = 466.164, y = "as4" },
{ m = 71, i = "B4", f = 493.883, y = "b4" },
{ m = 72, i = "C5", f = 523.251, y = "c5" },
{ m = 73, i = "C#5", f = 554.365, y = "cs5" },
{ m = 74, i = "D5", f = 587.33, y = "d5" },
{ m = 75, i = "D#5", f = 622.254, y = "ds5" },
{ m = 76, i = "E5", f = 659.255, y = "e5" },
{ m = 77, i = "F5", f = 698.456, y = "f5" },
{ m = 78, i = "F#5", f = 739.989, y = "fs5" },
{ m = 79, i = "G5", f = 783.991, y = "g5" },
{ m = 80, i = "G#5", f = 830.609, y = "gs5" },
{ m = 81, i = "A5", f = 880, y = "a5" },
{ m = 82, i = "A#5", f = 932.328, y = "as5" },
{ m = 83, i = "B5", f = 987.767, y = "b5" },
{ m = 84, i = "C6", f = 1046.502, y = "c6" },
{ m = 85, i = "C#6", f = 1108.731, y = "cs6" },
{ m = 86, i = "D6", f = 1174.659, y = "d6" },
{ m = 87, i = "D#6", f = 1244.508, y = "ds6" },
{ m = 88, i = "E6", f = 1318.51, y = "e6" },
{ m = 89, i = "F6", f = 1396.913, y = "f6" },
{ m = 90, i = "F#6", f = 1479.978, y = "fs6" },
{ m = 91, i = "G6", f = 1567.982, y = "g6" },
{ m = 92, i = "G#6", f = 1661.219, y = "gs6" },
{ m = 93, i = "A6", f = 1760, y = "a6" },
{ m = 94, i = "A#6", f = 1864.655, y = "as6" },
{ m = 95, i = "B6", f = 1975.533, y = "b6" },
{ m = 96, i = "C7", f = 2093.005, y = "c7" },
{ m = 97, i = "C#7", f = 2217.461, y = "cs7" },
{ m = 98, i = "D7", f = 2349.318, y = "d7" },
{ m = 99, i = "D#7", f = 2489.016, y = "ds7" },
{ m = 100, i = "E7", f = 2637.021, y = "e7" },
{ m = 101, i = "F7", f = 2793.826, y = "f7" },
{ m = 102, i = "F#7", f = 2959.955, y = "fs7" },
{ m = 103, i = "G7", f = 3135.964, y = "g7" },
{ m = 104, i = "G#7", f = 3322.438, y = "gs7" },
{ m = 105, i = "A7", f = 3520, y = "a7" },
{ m = 106, i = "A#7", f = 3729.31, y = "as7" },
{ m = 107, i = "B7", f = 3951.066, y = "b7" },
{ m = 108, i = "C8", f = 4186.009, y = "c8" },
{ m = 109, i = "C#8", f = 4434.922, y = "cs8" },
{ m = 110, i = "D8", f = 4698.636, y = "d8" },
{ m = 111, i = "D#8", f = 4978.032, y = "ds8" },
{ m = 112, i = "E8", f = 5274.042, y = "e8" },
{ m = 113, i = "F8", f = 5587.652, y = "f8" },
{ m = 114, i = "F#8", f = 5919.91, y = "fs8" },
{ m = 115, i = "G8", f = 6271.928, y = "g8" },
{ m = 116, i = "G#8", f = 6644.876, y = "gs8" },
{ m = 117, i = "A8", f = 7040, y = "a8" },
{ m = 118, i = "A#8", f = 7458.62, y = "as8" },
{ m = 119, i = "B8", f = 7902.132, y = "b8" },
{ m = 120, i = "C9", f = 8372.018, y = "c9" },
{ m = 121, i = "C#9", f = 8869.844, y = "cs9" },
{ m = 122, i = "D9", f = 9397.272, y = "d9" },
{ m = 123, i = "D#9", f = 9956.064, y = "ds9" },
{ m = 124, i = "E9", f = 10548.084, y = "e9" },
{ m = 125, i = "F9", f = 11175.304, y = "f9" },
{ m = 126, i = "F#9", f = 11839.82, y = "fs9" },
{ m = 127, i = "G9", f = 12543.856, y = "g9" },
{ m = 128, i = "G#9", f = 13289.752, y = "gs9" },
{ m = 129, i = "A9", f = 14080, y = "a9" },
{ m = 130, i = "A#9", f = 14917.24, y = "as9" },
{ m = 131, i = "B9", f = 15804.264, y = "b9" }
}
end
function music:is_valid_ygg(s)
local match = false
for k, v in pairs(self:get_database()) do
if v.y == s then
match = true
end
end
return match
end
function music:transpose_note(note)
return note + (self.transpose * 12)
end
function music:set_scale(i)
self.scale = util.clamp(i, 1, #self.scale_names)
self.scale_name = self.scale_names[self.scale]
self:build_scale()
end
function music:build_scale()
self.scale_notes = musicutil.generate_scale(self.root, self.scale_name, self.octaves)
end
function music:snap_note(note)
return musicutil.snap_note_to_array(note, self.scale_notes)
end
function music:get_database()
return self.database
end
function music:convert(direction, value)
local db = self:get_database()
if direction == "midi_to_ygg" then for k, v in pairs(db) do if v.m == value then return v.y end end end
if direction == "midi_to_ipn" then for k, v in pairs(db) do if v.m == value then return v.i end end end
if direction == "midi_to_freq" then for k, v in pairs(db) do if v.m == value then return v.f end end end
if direction == "ygg_to_midi" then for k, v in pairs(db) do if v.y == value then return v.m end end end
end
function music:chord_to_midi(c)
-- input: chord names with optional transposition/octaves
-- in format <note><chordtype>[/<note>][;octave]
-- (octave 4 is default)
-- returns: table of note names or midi notes in that chord
-- example: 'cmaj7/e;6' will return midi notes {88,91,95,96}
-- or will return names {E6,G6,B6,C7}
-- 'gbm' will return midi notes {66,70,73,77}
-- or will return midi names {F#4,A#4,C#5,F5}
local original_c = c
if c==nil then
print("c is nil")
return false
end
local db = self.database
db_chords={
{"1P 3M 5P","major","^",""},
{"1P 3M 5P 7M","major seventh","maj7","ma7","M7","Maj7","^7"},
{"1P 3M 5P 7M 9M","major ninth","maj9","^9"},
{"1P 3M 5P 7M 9M 13M","major thirteenth","maj13","Maj13 ^13"},
{"1P 3M 5P 6M","sixth","6","add6","add13","M6"},
{"1P 3M 5P 6M 9M","sixth/ninth","6/9","69","M69"},
{"1P 3M 6m 7M","major seventh flat sixth","maj7b6","^7b6"},
{"1P 3M 5P 7M 11A","major seventh sharp eleventh","majs4","M7#11","^7#11","maj7#11"},
-- ==Minor==
-- '''Normal'''
{"1P 3m 5P","minor","m","min","-"},
{"1P 3m 5P 7m","minor seventh","m7","min7","mi7","-7"},
{"1P 3m 5P 7M","minor/major seventh","maj7","majmaj7","mM7","mMaj7","m/M7","-^7"},
{"1P 3m 5P 6M","minor sixth","m6","-6"},
{"1P 3m 5P 7m 9M","minor ninth","m9","-9"},
{"1P 3m 5P 7M 9M","minor/major ninth","minmaj9","mMaj9","-^9"},
{"1P 3m 5P 7m 9M 11P","minor eleventh","m11","-11"},
{"1P 3m 5P 7m 9M 13M","minor thirteenth","m13","-13"},
-- '''Diminished'''
{"1P 3m 5d","diminished","dim","°","o"},
{"1P 3m 5d 7d","diminished seventh","dim7","°7","o7"},
{"1P 3m 5d 7m","half-diminished","m7b5","ø","-7b5","h7","h"},
-- ==Dominant/Seventh==
-- '''Normal'''
{"1P 3M 5P 7m","dominant seventh","7","dom"},
{"1P 3M 5P 7m 9M","dominant ninth","9"},
{"1P 3M 5P 7m 9M 13M","dominant thirteenth","13"},
{"1P 3M 5P 7m 11A","lydian dominant seventh","7s11","7#4"},
-- '''Altered'''
{"1P 3M 5P 7m 9m","dominant flat ninth","7b9"},
{"1P 3M 5P 7m 9A","dominant sharp ninth","7s9"},
{"1P 3M 7m 9m","altered","alt7"},
-- '''Suspended'''
{"1P 4P 5P","suspended fourth","sus4","sus"},
{"1P 2M 5P","suspended second","sus2"},
{"1P 4P 5P 7m","suspended fourth seventh","7sus4","7sus"},
{"1P 5P 7m 9M 11P","eleventh","11"},
{"1P 4P 5P 7m 9m","suspended fourth flat ninth","b9sus","phryg","7b9sus","7b9sus4"},
-- ==Other==
{"1P 5P","fifth","5"},
{"1P 3M 5A","augmented","aug","+","+5","^#5"},
{"1P 3m 5A","minor augmented","ms5","-#5","m+"},
{"1P 3M 5A 7M","augmented seventh","maj75","maj7+5","+maj7","^7#5"},
{"1P 3M 5P 7M 9M 11A","major sharp eleventh (lydian)","maj9s11","^9#11"},
-- ==Legacy==
{"1P 2M 4P 5P","","sus24","sus4add9"},
{"1P 3M 5A 7M 9M","","maj9s5","Maj9s5"},
{"1P 3M 5A 7m","","7s5","+7","7+","7aug","aug7"},
{"1P 3M 5A 7m 9A","","7s5s9","7s9s5","7alt"},
{"1P 3M 5A 7m 9M","","9s5","9+"},
{"1P 3M 5A 7m 9M 11A","","9s5s11"},
{"1P 3M 5A 7m 9m","","7s5b9","7b9s5"},
{"1P 3M 5A 7m 9m 11A","","7s5b9s11"},
{"1P 3M 5A 9A","","padds9"},
{"1P 3M 5A 9M","","Ms5add9","padd9"},
{"1P 3M 5P 6M 11A","","M6s11","M6b5","6s11","6b5"},
{"1P 3M 5P 6M 7M 9M","","maj7add13"},
{"1P 3M 5P 6M 9M 11A","","69s11"},
{"1P 3m 5P 6M 9M","","m69","-69"},
{"1P 3M 5P 6m 7m","","7b6"},
{"1P 3M 5P 7M 9A 11A","","maj7s9s11"},
{"1P 3M 5P 7M 9M 11A 13M","","M13s11","maj13s11","M13+4","M13s4"},
{"1P 3M 5P 7M 9m","","maj7b9"},
{"1P 3M 5P 7m 11A 13m","","7s11b13","7b5b13"},
{"1P 3M 5P 7m 13M","","7add6","67","7add13"},
{"1P 3M 5P 7m 9A 11A","","7s9s11","7b5s9","7s9b5"},
{"1P 3M 5P 7m 9A 11A 13M","","13s9s11"},
{"1P 3M 5P 7m 9A 11A 13m","","7s9s11b13"},
{"1P 3M 5P 7m 9A 13M","","13s9"},
{"1P 3M 5P 7m 9A 13m","","7s9b13"},
{"1P 3M 5P 7m 9M 11A","","9s11","9+4","9s4"},
{"1P 3M 5P 7m 9M 11A 13M","","13s11","13+4","13s4"},
{"1P 3M 5P 7m 9M 11A 13m","","9s11b13","9b5b13"},
{"1P 3M 5P 7m 9m 11A","","7b9s11","7b5b9","7b9b5"},
{"1P 3M 5P 7m 9m 11A 13M","","13b9s11"},
{"1P 3M 5P 7m 9m 11A 13m","","7b9b13s11","7b9s11b13","7b5b9b13"},
{"1P 3M 5P 7m 9m 13M","","13b9"},
{"1P 3M 5P 7m 9m 13m","","7b9b13"},
{"1P 3M 5P 7m 9m 9A","","7b9s9"},
{"1P 3M 5P 9M","","Madd9","2","add9","add2"},
{"1P 3M 5P 9m","","majaddb9"},
{"1P 3M 5d","","majb5"},
{"1P 3M 5d 6M 7m 9M","","13b5"},
{"1P 3M 5d 7M","","maj7b5"},
{"1P 3M 5d 7M 9M","","maj9b5"},
{"1P 3M 5d 7m","","7b5"},
{"1P 3M 5d 7m 9M","","9b5"},
{"1P 3M 7m","","7no5"},
{"1P 3M 7m 13m","","7b13"},
{"1P 3M 7m 9M","","9no5"},
{"1P 3M 7m 9M 13M","","13no5"},
{"1P 3M 7m 9M 13m","","9b13"},
{"1P 3m 4P 5P","","madd4"},
{"1P 3m 5P 6m 7M","","mmaj7b6"},
{"1P 3m 5P 6m 7M 9M","","mmaj9b6"},
{"1P 3m 5P 7m 11P","","m7add11","m7add4"},
{"1P 3m 5P 9M","","madd9"},
{"1P 3m 5d 6M 7M","","o7maj7"},
{"1P 3m 5d 7M","","omaj7"},
{"1P 3m 6m 7M","","mb6maj7"},
{"1P 3m 6m 7m","","m7s5"},
{"1P 3m 6m 7m 9M","","m9s5"},
{"1P 3m 5A 7m 9M 11P","","m11A"},
{"1P 3m 6m 9m","","mb6b9"},
{"1P 2M 3m 5d 7m","","m9b5"},
{"1P 4P 5A 7M","","maj7s5sus4"},
{"1P 4P 5A 7M 9M","","maj9s5sus4"},
{"1P 4P 5A 7m","","7s5sus4"},
{"1P 4P 5P 7M","","maj7sus4"},
{"1P 4P 5P 7M 9M","","maj9sus4"},
{"1P 4P 5P 7m 9M","","9sus4","9sus"},
{"1P 4P 5P 7m 9M 13M","","13sus4","13sus"},
{"1P 4P 5P 7m 9m 13m","","7sus4b9b13","7b9b13sus4"},
{"1P 4P 7m 10m","","4","quartal"},
{"1P 5P 7m 9m 11P","","11b9"},
}
notes_white={"C","D","E","F","G","A","B"}
notes_scale_sharp={"C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B"}
notes_scale_acc1={"B#","Db","D","Eb","Fb","E#","Gb","G","Ab","A","Bb","Cb"}
notes_scale_acc2={"C","Cs","D","Ds","E","F","Fs","G","Gs","A","As","B"}
notes_scale_acc3={"Bs","Db","D","Eb","Fb","Es","Gb","G","Ab","A","Bb","Cb"}
notes_adds={"","#","b","s"}
notes_all={}
for i,n in ipairs(notes_white) do
for j,a in ipairs(notes_adds) do
table.insert(notes_all,(n..a))
end
end
chord_match=""
-- get octave
octave=4
if string.match(c,";") then
for i,s in pairs(fn.string_split(c,";")) do
if i==1 then
c=s
else
octave=tonumber(s)
end
end
end
-- get transpositions
transpose_note=''
if string.match(c,"/") then
for i,s in pairs(fn.string_split(c,"/")) do
if i==1 then
c=s
else
transpose_note=s
end
end
end
-- find the root note name
note_match=""
transpose_note_match=""
chord_rest=""
for i,n in ipairs(notes_all) do
if transpose_note~="" and #n>#transpose_note_match then
if n:lower()==transpose_note or n==transpose_note then
transpose_note_match=n
end
end
if #n>#note_match then
-- defense against commands:extract_class()
if fn.is_int(c) then return false end
-- check if has prefix
s,e=c:find(n)
if s==1 then
note_match=n
chord_rest=string.sub(c,e+1)
end
s,e=c:find(n:lower())
if s==1 then
note_match=n
chord_rest=string.sub(c,e+1)
end
end
end
if note_match=="" then
return false
end
-- convert to canonical sharp scale
-- e.g. Fb -> E, Gs -> G#
for i,n in ipairs(notes_scale_acc1) do
if note_match==n then
note_match=notes_scale_sharp[i]
break
end
end
for i,n in ipairs(notes_scale_acc2) do
if note_match==n then
note_match=notes_scale_sharp[i]
break
end
end
for i,n in ipairs(notes_scale_acc3) do
if note_match==n then
note_match=notes_scale_sharp[i]
break
end
end
if transpose_note_match~="" then
for i,n in ipairs(notes_scale_acc1) do
if transpose_note_match==n then
transpose_note_match=notes_scale_sharp[i]
break
end
end
for i,n in ipairs(notes_scale_acc2) do
if transpose_note_match==n then
transpose_note_match=notes_scale_sharp[i]
break
end
end
for i,n in ipairs(notes_scale_acc3) do
if transpose_note_match==n then
transpose_note_match=notes_scale_sharp[i]
break
end
end
end
-- find longest matching chord pattern
chord_match="" -- (no chord match is major chord)
chord_intervals="1P 3M 5P"
for _,chord_type in ipairs(db_chords) do
for i,chord_pattern in ipairs(chord_type) do
if i>2 then
if #chord_pattern>#chord_match and (chord_rest:lower()==chord_pattern:lower()) then
chord_match=chord_pattern
chord_intervals=chord_type[1]
end
end
end
end
print("chord_match for "..chord_rest..": "..chord_match)
-- find location of root
root_position=1
for i,n in ipairs(notes_scale_sharp) do
if n==note_match then
root_position=i
break
end
end
-- find notes from intervals
whole_note_semitones={0,2,4,5,7,9,11,12}
notes_in_chord={}
for interval in string.gmatch(chord_intervals,"%S+") do
-- get major note position
major_note_position=(string.match(interval,"%d+")-1)%7+1
-- find semitones from root
semitones=whole_note_semitones[major_note_position]
-- adjust semitones based on interval
if string.match(interval,"m") then
semitones=semitones-1
elseif string.match(interval,"A") then
semitones=semitones+1
end
print("interval: "..interval)
print("major_note_position: "..major_note_position)
print("semitones: "..semitones)
print("root_position+semitones: "..root_position+semitones)
-- get note in scale from root position
note_in_chord=notes_scale_sharp[root_position+semitones]
table.insert(notes_in_chord,note_in_chord)
end
-- if tranposition, rotate until new root
if transpose_note_match~="" then
found_note=false
for i=1,#notes_in_chord do
if notes_in_chord[1]==transpose_note_match then
found_note=true
break
end
table.insert(notes_in_chord,table.remove(notes_in_chord,1))
end
if not found_note then
table.insert(notes_in_chord,1,transpose_note_match)
end
end
-- convert to midi
if octave==nil then
octave=4
end
midi_notes_in_chord={}
last_note=0
for i,n in ipairs(notes_in_chord) do
for _,d in ipairs(db) do
if d.m>last_note and (d.i==n..octave or d.i==n..(octave+1) or d.i==n..(octave+2) or d.i==n..(octave+3)) then
last_note=d.m
table.insert(midi_notes_in_chord,d.m)
notes_in_chord[i]=d.i
break
end
end
end
-- debug
print(original_c)
for _,n in ipairs(notes_in_chord) do
print(n)
end
-- return
return true,midi_notes_in_chord,notes_in_chord
end
return music