def get_meter_notes(beats_sample,
meter_signature,
pitch_sample,
octave_sample,
volume_sample=120,
shuffle_pitch_sample=True,
shuffle_beats=True,
n_beats=None):
""" Return the sequence of notes
"""
notes = NoteSeq()
# get the beats
if shuffle_beats:
beats = get_beats(beats_sample, meter_signature)
else:
beats = beats_sample
if n_beats:
beats = beats[:n_beats]
vol = get_random_item(volume_sample)
for ctr, beat in enumerate(beats):
if shuffle_pitch_sample:
pitch = get_random_item(pitch_sample)
else:
pitch = pitch_sample[ctr]
note = pitch_to_note(pitch)
octave = get_random_item(octave_sample)
notes.append(Note(note, octave, beat, vol))
return notes
def test_init_empty(self):
"""Test if NoteSeq without arguments will clean previous values."""
seq = NoteSeq()
seq.append(Note("C"))
seq = NoteSeq()
seq.append(Note("D"))
self.assertEqual(seq, NoteSeq("D"))
def strToMidi(msg, fileName):
from pyknon.genmidi import Midi
from pyknon.music import NoteSeq
from pyknon.music import Note
notes = {
'0' : Note(value=0, octave=5), # Do
'1' : Note(value=2, octave=5), # Re
'2' : Note(value=4, octave=5), # Mi
'3' : Note(value=5, octave=5), # Fa
'4' : Note(value=7, octave=5), # Sol
'5' : Note(value=9, octave=5), # La
'6' : Note(value=11, octave=5), # Si
'7' : Note(value=0, octave=6),
'8' : Note(value=2, octave=6),
'9' : Note(value=4, octave=6),
'a' : Note(value=5, octave=6),
'b' : Note(value=7, octave=6),
'c' : Note(value=9, octave=6),
'd' : Note(value=11, octave=6),
'e' : Note(value=0, octave=7),
'f' : Note(value=2, octave=7)
}
msgHex = msg.encode('hex');
sequence = NoteSeq('C1')
before = ''
for i in msgHex:
if before == i:
sequence.append(Note(value=4, octave=7))
sequence.append(notes[i])
before = i
midi = Midi(1, tempo = 290)
midi.seq_notes(sequence, track=0)
midi.write(fileName)
def pix2noteseq(pixelmap, width, height):
"""
Convert a PIL pixel map to a PyKnon NoteSeq
Use:
pix2noteseq(pixelmap)
Arguemnts:
pixelmap: the PIL pixel map of the image
width: the width in pixels
height: height in pixels
This function presumes the pixel map is in RGB and correct behavior when
otherwise is not at all guaranteed.
"""
notes = NoteSeq()
# Iterate over the pixels, starting at the top left and working
# colomn by colomn
for y in range(height):
for x in range(width):
notes.append(pix2note(pixelmap[x,y]))
if y == math.ceil(height/2) and x == math.ceil(width/2):
print("50% done...")
return notes
def test_init_empty(self):
"""Test if NoteSeq without arguments will clean previous values."""
seq = NoteSeq()
seq.append(Note("C"))
seq = NoteSeq()
seq.append(Note("D"))
self.assertEqual(seq, NoteSeq("D"))
def chord_prog(chords_note):
cprog6251 = NoteSeq()
count = 0
while count < 2: # while true if break
for i in chords_note:
cprog6251.append(Note(i, 4, 1, 100))
count += 1
return cprog6251
def play_list(pitch_list, octave_list, duration, volume=120):
result = NoteSeq()
for pitch in pitch_list:
note = pitch % 12
octave = choice_if_list(octave_list)
dur = choice_if_list(duration)
vol = choice_if_list(volume)
result.append(Note(note, octave, dur, vol))
return result
def random_notes(pitch_list, octave, duration, number_of_notes, volume=120):
result = NoteSeq()
for x in range(0, number_of_notes):
pitch = choice(pitch_list)
octave = choice_if_list(octave)
dur = choice_if_list(duration)
vol = choice_if_list(volume)
result.append(Note(pitch, octave, dur, vol))
return result
def play_list(pitch_list, octave_list, duration, volume=120):
result = NoteSeq()
for pitch in pitch_list:
note = pitch % 12
octave = choice_if_list(octave_list)
dur = choice_if_list(duration)
vol = choice_if_list(volume)
result.append(Note(note, octave, dur, vol))
return result
def random_notes(pitch_list, octave_list, duration,
number_of_notes, volume=120):
result = NoteSeq()
for x in range(0, number_of_notes):
pitch = choice(pitch_list)
octave = choice_if_list(octave_list)
dur = choice_if_list(duration)
vol = choice_if_list(volume)
result.append(Note(pitch, octave, dur, vol))
return result
def random_notes(pitch_list, octave_list, duration, volume):
result = NoteSeq()
number_of_notes = int(1 // duration)
for x in range(0, number_of_notes, 1):
pitch = choice(pitch_list)
octave = choice(octave_list)
dur = duration
vol = volume
result.append(Note(pitch, octave, dur, vol))
return result
def rhythm_6_17_left(self, chord: Chord) -> [Chord]:
rhythm = []
new_chord = NoteSeq()
new_chord.append(chord.first_note.octave_shift(-1))
new_chord.append(chord.first_note.octave_shift(-2))
rhythm.append(new_chord.stretch_dur(12 / self.subdivided))
rhythm.append(new_chord.stretch_dur(12 / self.subdivided))
rhythm.append(new_chord.stretch_dur(8 / self.subdivided))
return rhythm
def getNotesFromNums(nums, scaleNum, durations):
#convert back to noteSeq
scale = majorScales[scaleNum]
ans = NoteSeq()
j = 0
for num in nums:
for i in range(len(scale)):
if num==i:
ans.append(Note(scale[i], dur=durations[j]))
j+=1
#print(ans)
return ans
def random_melody(note_list, octave_low, octave_high, dur_list):
rm_seq = NoteSeq() #[]
rm_data = []
melody_len = 0
while melody_len < 8: # while True if break bug
pitch = random.choice(note_list) #refactor by root +2 +4 ...
octave = random.randint(octave_low, octave_high)
dur = random.choice(dur_list)
vol = random.randrange(80, 125, 5) #refactor
print([pitch, octave, dur, vol])
rm_seq.append(Note(pitch, octave, dur, vol)) #refactor
rm_data.append([pitch, octave, dur, vol])
melody_len += dur
print(melody_len)
rm = [rm_seq, rm_data]
return rm
def get_random_notes(n, pitches, durations, rests=True):
if rests:
pitches.append('r')
result = NoteSeq()
for i in range(n):
pitch = random.choice(pitches)
duration = random.choice(durations)
if pitch == 'r':
result.append(Rest(dur=duration))
else:
result.append(Note(pitch, octave=4, dur=duration))
return result
def play_list(pitch_list, octave_list, duration,
volume=120):
result = NoteSeq()
durl = [1/8, 1/8, 1/16, 1/16]
cc = [choice([0,1,2,3,4,5,6,7,8,9,10,11]), choice([0,1,2,3,4,5,6,7,8,9,10,11]), choice([0,1,2,3,4,5,6,7,8,9,10,11]), choice([0,1,2,3,4,5,6,7,8,9,10,11])]
st = 0
for pitch in pitch_list:
note1 = pitch
note = cc[st%4]
#octave = choice_if_list(octave_list)
octave = change_range(note1, 0, 11, 1, 7)
#dur = choice_if_list(duration)
dur = durl[st%4]
st += 1
vol = choice_if_list(volume)
result.append(Note(note, octave, dur, vol))
return result
def make_midi(midi_path, notes, bpm=120):
note_names = 'c c# d d# e f f# g g# a a# b'.split()
result = NoteSeq()
for n in notes:
duration = 1. / n[1]
if n[0].lower() == 'r':
result.append(Rest(dur=duration))
else:
pitch = n[0][:-1]
octave = int(n[0][-1]) + 1
pitch_number = note_names.index(pitch.lower())
result.append(Note(pitch_number, octave=octave, dur=duration))
midi = Midi(1, tempo=bpm)
midi.seq_notes(result, track=0)
midi.write(midi_path)
def makemidi(self):
note_names = 'c c# d d# e f f# g g# a a# b'.split()
octav10 = {
'c10', 'c#10', 'd10', 'd#10', 'e10', 'f10', 'f#10', 'g10', 'g#10',
'a10', 'a#10', 'b10'
}
result = NoteSeq()
for s in self.song:
duration = 1. / s[1]
if s[0] == 'r':
result.append(Rest(dur=duration))
elif {s[0]}.issubset(octav10):
md = s[0][:-2]
octave = int(s[0][-2:]) + 1
note_number = note_names.index(md)
result.append(Note(note_number, octave=octave, dur=duration))
else:
md = s[0][:-1]
octave = int(s[0][-1]) + 1
note_number = note_names.index(md)
result.append(Note(note_number, octave=octave, dur=duration))
midi = Midi(number_tracks=1, tempo=self.bpm)
midi.seq_notes(result, track=0)
midi.write(self.path)
def random_notes_with_memory(pitch_list, octave_list, duration_list,
number_of_notes, memory_weights, volume=120):
assert len(memory_weights) > 1, "more than 1 weight expected for memory"
result = NoteSeq()
for offset in range(0, number_of_notes):
if 1+offset >= len(memory_weights):
weights = memory_weights
else:
weights = memory_weights[0:1+offset]
pitch_selection = weighted_random(weights)
if pitch_selection == 0: # new note
pitch = choice(pitch_list)
else:
pitch = result[-pitch_selection].value
octave_selection = weighted_random(weights)
if octave_selection == 0: # new note
octave = choice_if_list(octave_list)
else: # previous note at given position starting from the end
octave = result[-octave_selection].octave
duration_selection = weighted_random(weights)
if duration_selection == 0: # new note
dur = choice_if_list(duration_list)
else: # previous note at given position starting from the end
dur = result[-duration_selection].dur
volume_selection = weighted_random(weights)
if volume_selection == 0: # new note
vol = choice_if_list(volume)
else: # previous note at given position starting from the end
vol = result[-volume_selection].volume
result.append(Note(pitch, octave, dur, vol))
return result
def main():
new = input('Do you want to creat a new random melody? ')
if new == 'y':
note_list = [0, 2, 4, 6, 7, 9, 11] #refactor by root +2 +4 ...
octave_low = 5
octave_high = 6
dur_list = [0.125, 0.25, 0.5]
rm = random_melody(note_list, octave_low, octave_high, dur_list)
rm_seq, rm_data = rm
print(rm_seq)
store_rm(rm_data, 'random_melody_in_C_data.csv')
elif new == 'n':
rm_data = open_rm('random_melody_in_C_data.csv')
rm_seq = NoteSeq(
) #rm_seq = NoteSeq([Note(int(p[0])) for p in rm_data])
for p in rm_data:
rm_seq.append(Note(p[0], p[1], p[2], p[3]))
print(rm_seq)
# cprog6251r = chord_prog([9, 2, 7, 0])
# cprog62513 = chord_prog([0, 5, 11, 4]) #inversion 9 0
# gen_midi(rm_seq, cprog6251r, cprog62513, 'random_melody_in_C_3.mid')
fsprog = fusion_prog_rym(rm_data, [0], [10, 11], [14])
fsprogr, fsprog7, fsprog9 = fsprog
gen_midi(rm_seq, fsprogr, fsprog7, fsprog9, 'random_melody_in_C_.mid')
def test_append(self):
seq1 = NoteSeq("C# D#")
seq1.append(Note("F#"))
seq2 = NoteSeq("C# D# F#")
self.assertEqual(seq1, seq2)
return obs
def obs_to_note(obs):
global notes
day, hour, temp, opacity, precip = obs
# Temperature is note
index = int(temp)
if index < 7: index = 7
elif index > 90: index = 90
index -= 7
octave, pitch = notes[index]
# Sky cover is volume
volume = 0
try:
volume = opacity_to_volume[opacity]
except:
pass
return Note(pitch, octave, dur, int(volume * 120))
obs = read_obs('data/kcmh_2014_03_obs.csv')
obs_notes = NoteSeq()
for ob in obs:
obs_notes.append(obs_to_note(ob))
midi = Midi(1, tempo=90, instrument=1)
midi.seq_notes(obs_notes, track=0)
midi.write("output/temps_2014_03.mid")
# Sky cover is volume
volume = 0
try:
volume = opacity_to_volume[opacity]
except:
pass
return Note(pitch, octave, dur, 127)
obs = read_obs('data/kcmh_2014_03_obs.csv')
obs_notes = NoteSeq()
prev_note = None
for ob in obs:
note = obs_to_note(ob)
if prev_note is not None and prev_note.value == note.value and prev_note.octave == note.octave:
prev_note = Note(prev_note.value, prev_note.octave,
prev_note.dur + dur, prev_note.volume)
elif prev_note is None:
prev_note = note
else:
obs_notes.append(prev_note)
prev_note = None
if prev_note is not None:
obs_notes.append(prev_note)
midi = Midi(1, tempo=90, instrument=1)
midi.seq_notes(obs_notes, track=0)
midi.write("output/temps_2014_03_hold.mid")
def derive_tracks_from_lyrics(self, lyrics, notes, track_duration, method):
'''
Attempts to find patterns in lyrics to be paired with the given notes
to create new tracks of a specified duration
:param str lyrics:The lyrics from which to derive music
:param NoteSequ notes: The notes to be utilized in track creation
:param int track_duration: The optimal length of the tracks, in seconds
:param list method:A list of invention methods that derive data from text
:returns: A list of NoteSeqs that represents musical tracks
'''
num_notes = len(notes)
lyrics_sentences = lyrics.replace("?", ".").replace("!",
".").split(".")
#Remove tiny sentences, if any
lyrics_sentences = [s for s in lyrics_sentences if len(s) > 5]
num_sentences = len(lyrics_sentences)
track_list = list()
#Skip first sentence, as the Lead track will be based on it already
#otherwise create a track for each sentence
for i in range(1, min(3, num_sentences)):
#Count the words in this sentence
lyric_sentence = lyrics_sentences[i]
lyric_words = nltk.word_tokenize(lyric_sentence)
num_words = len(lyric_words)
#Count the number of characters in each word
list_of_char_counts = list()
for j in range(0, len(lyric_words)):
list_of_char_counts.append(len(lyric_words[j]))
num_chars_total = sum([cnt for cnt in list_of_char_counts])
#Every other track picks a pattern length differently
#but all tracks use the agent's invention methods
if i % 2 == 0:
pattern_length = max(3, method[0](lyric_sentence) % 8)
pattern_accent = method[1](lyric_sentence) % 3
accent_occur = max(1, method[2](lyric_sentence) % 12)
inversion_accent = method[3](lyric_sentence) % 6
inversion_occur = max(1, method[4](lyric_sentence) % 10)
#Aim to start shortly before the lead track
target_duration = track_duration * 1.05
note_vol = 85
else:
pattern_length = max(3, method[4](lyric_sentence) % 12)
pattern_accent = method[3](lyric_sentence) % 3
accent_occur = max(1, method[2](lyric_sentence) % 16)
inversion_accent = method[1](lyric_sentence) % 5
inversion_occur = max(1, method[0](lyric_sentence) % 8)
#Aim for a lead-in before the other tracks
target_duration = track_duration * 1.1
note_vol = 80
#Give notes equal time, in accordance with represented word length, plus time for rests
duration_unit = (
target_duration /
(num_words * pattern_length * num_chars_total)) - num_words
#Repeat the pattern equal to the number of words in the sentence
this_track = NoteSeq()
for n in range(0, num_words):
for m in range(0, pattern_length):
note_to_append = m % num_notes
note = notes[note_to_append]
note.volume = note_vol
#Invert the pattern this time, if the invention method calls for it
if n % inversion_occur == 2:
note = note.inversion(inversion_accent)
duration_count = max(1, m % list_of_char_counts[n])
note.duration = duration_count * duration_unit
#Transpose this note, if the invention method calls for it
if m % accent_occur == 3:
if m // accent_occur % 2 == 0:
note = note.transposition(pattern_accent)
else:
note = note.transposition(-pattern_accent)
this_track.append(note)
#Rest for a second between tracks
this_track.append(Rest(1))
#Add the completed track
track_list.append(this_track)
return track_list
def create_music(self, lyrics, invention_method):
'''Generate music from text.
Music is generated by deriving notes from text, harmonizing those notes, and splitting them
into separate tracks, choosing a theme based on the text and then matching the tracks up.
:returns: word_theme=a string representing inspiration, music_theme=tempo and instrument list, track_list=list of tracks composed of notes
'''
#Read in characters in the lyrics, and convert to musical notes
derived_notes = self.music_helper.convert_phrase_to_notes(lyrics)
#Determine which musical key is dominant in the derived notes
music_key = self.music_helper.determine_dominant_key(derived_notes)
#Force all notes into the dominant key so we don't have dischord
notes = self.music_helper.conform_notes_to_key(derived_notes,
music_key)
#Tokenize the word list
lyric_words = nltk.word_tokenize(lyrics)
#Find a word that will provide a theme for the song
word_theme = random.choice(
[word for word in lyric_words if len(word) > 4])
if word_theme == None:
self.music_helper.determine_theme("random")
else:
tempo = max(
120, invention_method.method_list[0](word_theme) *
invention_method.method_list[4](word_theme) % 400)
instr1 = (invention_method.method_list[0](word_theme) *
invention_method.method_list[3](word_theme)) % 127
instr2 = (invention_method.method_list[1](word_theme) *
invention_method.method_list[2](word_theme)) % 127
instr3 = (invention_method.method_list[4](word_theme) *
invention_method.method_list[0](word_theme)) % 127
music_theme = (tempo, [instr1, instr2, instr3])
track_list = []
lead_track = NoteSeq()
other_notes = NoteSeq()
lead_note_duration = (invention_method.method_list[0](lyrics) %
6) * 0.05
lead_rest_duration = (invention_method.method_list[1](lyrics) %
8) * 0.25
#Separate notes into lead track/others, assign word-based duration
for i in range(0, len(notes)):
#Associate each note for the lead track with a word in the lyrics,
#until we're out of words, then put the rest in "other"
if i < len(lyric_words):
word_ptr = i
word_for_note = lyric_words[word_ptr]
#Exclude punctuation in lead track
if word_for_note not in (',', '.', ';', '!', '?', '"', ':',
'/', '\\'):
#Set notes duration based on word length
notes[i].dur = len(word_for_note) * lead_note_duration
lead_track.append(notes[i])
else:
other_notes.append(notes[i])
#Insert rests for lead track at punctuation marks
rest_count = 0
for i in range(0, len(lead_track)):
if lyric_words[i] in (',', '.', ';', '!', '?', '"', ':', '/',
'\\'):
lead_track.insert(i + rest_count, Rest(lead_rest_duration))
rest_count = rest_count + 1
#See how long the lead track is
lead_track_duration = sum(
[noteOrRest.dur for noteOrRest in lead_track])
#Then add it to our track list
track_list.append(lead_track)
#If there aren't enough notes, add some from the lead track
if len(other_notes) < 8:
lead_length = len(lead_track)
for i in range(lead_length - 1, max(0, lead_length - 8), -1):
if not isinstance(lead_track[i], Rest):
other_notes.append(lead_track[i])
#Attempt to detect patterns in the lyrics in combination with the
#other notes, for the purpose of creating more tracks using the agent's
#preferred invention method
if len(other_notes) > 0:
pattern_tracks = self.music_helper.derive_tracks_from_lyrics(
lyrics, other_notes, lead_track_duration,
invention_method.method_list)
for i in range(0, len(pattern_tracks)):
track_list.append(pattern_tracks[i])
#Find out which track came out the longest in duration
longest_duration = lead_track_duration
for i in range(1, len(track_list)):
this_track_duration = sum(
[noteOrRest.dur for noteOrRest in track_list[i]])
if this_track_duration > longest_duration:
longest_duration = this_track_duration
#Make the tracks equal in duration, so there isn't long silence
for i in range(0, len(track_list)):
#Calculate this track duration
this_track_duration = sum(
[noteOrRest.dur for noteOrRest in track_list[i]])
#Add some rests before/during to make it centered
if this_track_duration < longest_duration:
insert_rest = (longest_duration - this_track_duration) / 2
track_list[i].insert(0, Rest(insert_rest))
track_list[i].append(Rest(insert_rest))
#Add a 2 second pause to the end of the longest track so it ends gracefully
if this_track_duration == longest_duration:
track_list[i].insert(0, Rest(2))
return word_theme, music_theme, track_list
def fusion_prog(rm_data, root, seventh, nine):
# def append_note(seq_name, p, r, note):
# seqname.append(Note(p[0] - r + note, 4, 1, 100))
# note indicates which note in the chord you want to put in the seq
fsprogr = NoteSeq()
fsprog7 = NoteSeq()
fsprog9 = NoteSeq()
fsprog = [fsprogr, fsprog7, fsprog9]
# the note of melody could be the 1, b3, 3, 5, b7, 7th of the chord
pitch_in_chord = [0, 3, 4, 7, 10, 11]
melody_len = 0
r = random.choice(pitch_in_chord)
#print(r)
ro = random.choice(root)
se = random.choice(seventh)
fsprogr.append(Note(rm_data[0][0] - r + ro, 4, 1, 100))
fsprog7.append(Note(rm_data[0][0] - r + se, 4, 1, 100))
fsprog9.append(Note(rm_data[0][0] - r + 14, 4, 1, 100))
for p in rm_data:
melody_len += p[2]
#print(melody_len)
r = random.choice(pitch_in_chord)
se = random.choice(seventh)
#print(r)
for i in range(1, 8):
if p[2] == 0.125:
if melody_len - 0.125 == i:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
if p[2] == 0.25:
if melody_len - 0.25 == i:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
if melody_len - 0.25 == i - 0.125:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
if p[2] == 0.5:
if melody_len - 0.5 == i:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
if melody_len - 0.5 == i - 0.125:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
if melody_len - 0.5 == i - 0.25:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
if melody_len - 0.5 == i - 0.375:
fsprogr.append(Note(p[0] - r, 4, 1, 100))
fsprog7.append(Note(p[0] - r + se, 4, 1, 100))
fsprog9.append(Note(p[0] - r + 14, 4, 1, 100))
return fsprog
def test_append(self):
seq1 = NoteSeq("C# D#")
seq1.append(Note("F#"))
seq2 = NoteSeq("C# D# F#")
self.assertEqual(seq1, seq2)
def fusion_prog_rym(rm_data, root, seventh, nine):
# note indicates which note in the chord you want to put in the seq
fsprogr = NoteSeq()
fsprog7 = NoteSeq()
fsprog9 = NoteSeq()
fsprog = [fsprogr, fsprog7, fsprog9]
# the note of melody could be the 1, b3, 3, 5, b7, 7th of the chord
pitch_in_chord = [0, 3, 4, 7, 10, 11]
melody_len = 0
for p in rm_data:
melody_len += p[2]
r = random.choice(pitch_in_chord)
se = random.choice(seventh)
if p[2] == 0.25:
fsprogr.append(Note(p[0] - r, 4, p[2], 100))
fsprog7.append(Note(p[0] - r + se, 4, p[2], 100))
fsprog9.append(Note(p[0] - r + 14, 4, p[2], 100))
elif p[2] == 0.5:
fsprogr.append(Note(p[0] - r, 4, p[2], 100))
fsprog7.append(Note(p[0] - r + se, 4, p[2], 100))
fsprog9.append(Note(p[0] - r + 14, 4, p[2], 100))
elif p[2] == 0.125:
fsprogr.append(Rest(p[2]))
fsprog7.append(Rest(p[2]))
fsprog9.append(Rest(p[2]))
return fsprog
def make_midi(midi_path, notes, bpm, instrument, beat):
note_names = 'c c# d d# e f f# g g# a a# b'.split()
result = NoteSeq()
melody_dur = 0
for n in notes:
if (n[1] < 0):
duration = (1.0 / -n[1]) + (1.0 / -n[1] / 2)
else:
duration = 1.0 / n[1]
melody_dur += duration
if n[0].lower() == 'r':
result.append(Rest(dur=duration))
else:
pitch = n[0][:-1]
octave = int(n[0][-1]) + 1
pitch_number = note_names.index(pitch.lower())
result.append(
Note(pitch_number, octave=octave, dur=duration, volume=100))
print(pitch_number, octave, duration)
duration = 1.0 / beat
harmony_len = math.ceil(melody_dur / duration)
harmony_len += (4 - harmony_len % 4)
pitch = [[0, 4, 7], [9, 0, 4], [2, 5, 9], [7, 11, 2, 5]]
octave = [[5, 5, 5], [5, 6, 6], [5, 5, 5], [5, 5, 6, 6]]
guitar0 = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 50
else:
volume = 70
guitar0.append(
Note(pitch[index][0],
octave=octave[index][0],
dur=duration,
volume=volume))
guitar1 = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 50
else:
volume = 70
guitar1.append(
Note(pitch[index][1],
octave=octave[index][1],
dur=duration,
volume=volume))
guitar2 = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 50
else:
volume = 70
guitar2.append(
Note(pitch[index][2],
octave=octave[index][2],
dur=duration,
volume=volume))
guitar3 = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 50
else:
volume = 70
if (index == 3):
guitar3.append(
Note(pitch[index][3],
octave=octave[index][3],
dur=duration,
volume=volume))
else:
guitar3.append(Rest(dur=duration))
cymbal = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 70
else:
volume = 100
pitch = 10
octave = 3
cymbal.append(Note(pitch, octave=octave, dur=duration, volume=volume))
kick = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 70
else:
volume = 100
pitch = 0
octave = 3
if (n % 4 == 0):
kick.append(Note(pitch, octave=octave, dur=duration,
volume=volume))
else:
kick.append(Rest(dur=duration))
snare = NoteSeq()
for n in range(harmony_len):
index = int(math.floor(n % 16 / 4))
if (n >= math.ceil(melody_dur / duration)):
volume = 70
else:
volume = 100
pitch = 4
octave = 3
if (n % 4 == 2):
snare.append(
Note(pitch, octave=octave, dur=duration, volume=volume))
else:
snare.append(Rest(dur=duration))
midi = Midi(number_tracks=8,
tempo=bpm,
instrument=[instrument, 25, 25, 25, 25, 0, 0, 0])
midi.seq_notes(result, track=0)
midi.seq_notes(guitar0, track=1)
midi.seq_notes(guitar1, track=2)
midi.seq_notes(guitar2, track=3)
midi.seq_notes(guitar3, track=4)
midi.seq_notes(cymbal, track=5, channel=9)
midi.seq_notes(kick, track=6, channel=9)
midi.seq_notes(snare, track=7, channel=9)
midi.write(midi_path)
