5 import sys 5 import sys 6 import time 6 import time 7 random.seed(time.time()) 7 random.seed(time.time()) 8 import parse 8 import parse 9 9 10 def main(): 10 def main(): 11 key = "A" 11 key = "A" 12 note_grammars = { < > 12 > 13 composition = { > 14 "a": { # Movement block 'a' for reuse throughout the piece > 15 "melody": { # Instrument 'melody' > 16 "csound_parameters": { > 17 "instrument": 1, > 18 }, > 19 "grammars": { # Notes for this instrument to use in this piece 13 "u": ["I V V V I I IV u u", "I IV u u", "I VII IV u u" , "e"], | 20 "u": ["I V V V I I IV u u", "I IV u u", "I VII IV u u" , "e 14 "e": [""], | 21 "e": [""], 15 } | 22 }, > 23 "score": "u u u", > 24 }, > 25 "rhythm": { > 26 "csound_parameters": { > 27 "instrument": 1, > 28 }, 16 chord_grammars = { | 29 "grammars": { 17 "u": ['"I" "IV" "V" "IV" "I" u u', '"I" "VII" "IV" u u', '"I" "V" "IV" u | 30 "u": ['"I" "IV"/2 "V"2 "IV" "I" u u', '"I" "VII" "IV" u u', 18 "e": [""] | 31 "e": [""] 19 } | 32 }, 20 compose_piece(key, note_grammars) < 21 compose_piece(key, chord_grammars, chords=True) < > 33 "score": "u u u", > 34 }, > 35 }, > 36 "b": { > 37 "melody": { # Instrument 'melody' > 38 "csound_parameters": { > 39 "instrument": 1, > 40 }, > 41 "grammars": { # Notes for this instrument to use in this piece > 42 "u": ["I V I I/2 IV/2 u u", "I4 IV u u", "I IV IV VI V u u" > 43 "e": [""], > 44 }, > 45 "score": "u u u", > 46 }, > 47 "rhythm": { > 48 "csound_parameters": { > 49 "instrument": 1, > 50 }, > 51 "grammars": { > 52 "u": ['"I" "IV"/2 "V"2 "IV" "I" u u', '"I" "VII" "IV" u u', > 53 "e": [""] > 54 }, > 55 "score": "u u u", > 56 }, > 57 }, 22 | 58 } 23 def compose_piece(key, grammars, chords=False): < 24 score = "" < 25 while len(score.split()) < 10: < 26 score = "u u u" < 27 score = generate_score(score, grammars) < > 59 > 60 for comp_name, comp in composition.iteritems(): > 61 for instr_name, instr in comp.iteritems(): > 62 generated_score = generate_score(instr["score"], instr["grammars"]) > 63 # composition[comp_name][instr_name][grammar]["score"] = parse.pa 28 score = parse.parse(score) | 64 score = parse.parse(generated_score) # Return Node/Chord objects 29 score = transliterate_score(score, key, chords) < 30 score = generate_csound_score(score) < > 65 > 66 # Generate timestamps for the notes > 67 t = 0 > 68 for note in range(len(score)): > 69 score[note].time = t > 70 t += score[note].duration > 71 composition[comp_name][instr_name]["score"] = score > 72 > 73 # Must be done after all note times keyed in, else you c,an't coordinate mel > 74 for comp_name, comp in composition.iteritems(): > 75 for instr_name, instr in comp.iteritems(): > 76 composition[comp_name][instr_name]["score"] = transliterate_score(co > 77 # print "\nMovement %s instrument %s" % (comp_name, instr_name) > 78 # print composition[comp_name][instr_name]["score"] 31 print "f1 0 256 10 1 0 3 ; sine wave function table" | 79 print "f1 0 256 10 1 0 3 ; sine wave function table" > 80 final_score = generate_csound_score(composition[comp_name][instr_nam 32 for line in score: | 81 for line in final_score: 33 print line | 82 print line 34 | 83 35 84 36 def make_scale(key): 85 def make_scale(key): 37 notes = ["A", "A#", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"] 86 notes = ["A", "A#", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"] 38 scale = [key] 87 scale = [key] 39 pos = notes.index(key) 88 pos = notes.index(key) 40 progression = [2,2,1,2,2,2,1] 89 progression = [2,2,1,2,2,2,1] 41 for p in progression: 90 for p in progression: ................................................................................................................................................................................ 48 while 1: 97 while 1: 49 found_substitution = False 98 found_substitution = False 50 for key,value in grammars.iteritems(): 99 for key,value in grammars.iteritems(): 51 if score.find(key) != -1: 100 if score.find(key) != -1: 52 found_substitution = True 101 found_substitution = True 53 while score.find(key) != -1: 102 while score.find(key) != -1: 54 score = score.replace(key, random.choice(grammars[key]), 1) 103 score = score.replace(key, random.choice(grammars[key]), 1) 55 if len(score) > 200: | 104 if len(score.split()) > 200: 56 score = score.replace("u", "") 105 score = score.replace("u", "") 57 score = score.replace("e", "") 106 score = score.replace("e", "") 58 return score 107 return score 59 if found_substitution is False: 108 if found_substitution is False: 60 break 109 break 61 return score 110 return score 62 111 63 def transliterate_score(score, key, chords=False): | 112 def transliterate_score(score, key): 64 scale = make_scale(key) 113 scale = make_scale(key) 65 scale_conversion = { 114 scale_conversion = { 66 "I": 1, 115 "I": 1, 67 "II": 2, 116 "II": 2, 68 "III": 3, 117 "III": 3, 69 "IV": 4, 118 "IV": 4, 70 "V": 5, 119 "V": 5, 71 "VI": 6, 120 "VI": 6, 72 "VII": 7, 121 "VII": 7, 73 "VIII": 8, 122 "VIII": 8, 74 } 123 } 75 keyed_score = [] 124 keyed_score = [] 76 if chords is False: < 77 for i in range(len(score)): | 125 for i in range(len(score)): > 126 if isinstance(score[i], parse.Note): 78 score[i].value = scale[scale_conversion[score[i].value]-1] 127 score[i].value = scale[scale_conversion[score[i].value]-1] 79 else: | 128 else: 80 for i in range(len(score)): < 81 chord = [] 129 chord = [] 82 root_note_index = scale.index(key) + scale_conversion[score[i].value 130 root_note_index = scale.index(key) + scale_conversion[score[i].value 83 chord.append(scale[root_note_index]) 131 chord.append(scale[root_note_index]) 84 chord.append(scale[(root_note_index+3) % 8]) 132 chord.append(scale[(root_note_index+3) % 8]) 85 chord.append(scale[(root_note_index+5) % 8]) 133 chord.append(scale[(root_note_index+5) % 8]) 86 score[i].chord = chord 134 score[i].chord = chord 87 return score 135 return score