def make_music21_score(
part_names=('violin', 'flute', 'oboe', 'clarinet', 'alto_saxophone',
'trumpet', 'bass', 'percussion'),
title='Title',
composer='Jonathan Marmor',
time_signature=None,
starting_tempo_bpm=60,
starting_tempo_quarter_duration=1.0,
timestamp=None,
):
if not timestamp:
timestamp = datetime.datetime.utcnow()
metadata = Metadata()
metadata.title = title
metadata.composer = composer
metadata.date = timestamp.strftime('%Y/%m/%d')
score = Score()
score.insert(0, metadata)
for part_name in part_names:
instrument_name, instrument_number = parse_part_name(part_name)
instrument = instrument_data[instrument_name]
part = Part()
metronome_mark = MetronomeMark(
number=starting_tempo_bpm,
referent=Duration(starting_tempo_quarter_duration))
part.append(metronome_mark)
if time_signature:
# Should be a string like '12/8'
music21_time_signature = TimeSignature(time_signature)
part.append(music21_time_signature)
m21_instrument = instrument['class']()
m21_instrument.partName = instrument['name']
m21_instrument.partAbbreviation = instrument['abbreviation']
if instrument_number > 1:
m21_instrument.partName = '{} {}'.format(instrument['name'],
instrument_number)
m21_instrument.partAbbreviation = '{} {}'.format(
instrument['abbreviation'], instrument_number)
part.insert(0, m21_instrument)
clef = instrument.get('clef')
if clef:
part.append(clef())
score.insert(0, part)
return score
def estimate_tempo(self):
tempo, beats = librosa.beat.beat_track(y=None, sr=self.sr,
onset_envelope=self.onsets[2],
hop_length=self.hop_length,
start_bpm=120.0,
tightness=100.0,
trim=True,
units='frames')
tempo = int(2 * round(tempo / 2))
mm = MetronomeMark(referent='quarter', number=tempo)
return tempo, beats, mm
def generate_notes_in_batch(note_params_df,
output_dir,
audio_format='flac',
sample_rate=44100):
"""
Generates a batch of single note samples from the given table of parameters.
`note_params_df` - a Pandas Dataframe with columns:
`midi_number, midi_instrument, volume, duration, tempo`. Their meaning is the same as in generate_single_note.
`output_dir` - output directory for the MIDI files
Each sample goes to a single MIDI file named by the numeric index. Also each synthesized audio sample goes to a
"""
os.makedirs(output_dir, exist_ok=True)
fs = FluidSynth(sample_rate=sample_rate)
stream = Stream()
for i, row in note_params_df.iterrows():
stream.append(MetronomeMark(number=row['tempo']))
stream.append(make_instrument(int(row['midi_instrument'])))
duration = row['duration']
stream.append(
chord_with_volume(
Chord([
Note(midi=int(row['midi_number']),
duration=Duration(duration))
]), row['volume']))
stream.append(Rest(duration=Duration(2 * duration)))
midi_file = '{0}/all_samples.midi'.format(output_dir)
audio_file_stereo = '{0}/all_samples_stereo.{1}'.format(
output_dir, audio_format)
audio_file = '{0}/all_samples.{1}'.format(output_dir, audio_format)
audio_index_file = '{0}/all_samples_index.csv'.format(output_dir)
# TODO: We currently assume some fixed duration and tempo (1.0, 120)!!!
# The parts should be split according to an index.
audio_index = make_audio_index(note_params_df, 3.0, 0.5, sample_rate)
audio_index.to_csv(audio_index_file)
write_midi(stream, midi_file)
fs.midi_to_audio(midi_file, audio_file_stereo)
convert_to_mono(audio_file_stereo, audio_file)
os.remove(audio_file_stereo)
x, sample_rate = sf.read(audio_file)
parts = split_audio_to_parts(x, sample_rate, audio_index)
store_parts_to_files(parts, sample_rate, output_dir, audio_format)
def generate_single_note(midi_number,
midi_instrument=0,
volume=1.0,
duration=1.0,
tempo=120):
"""
Generates a stream containing a single note with given parameters.
midi_number - MIDI note number, 0 to 127
midi_instrument - MIDI intrument number, 0 to 127
duration - floating point number (in quarter note lengths)
volume - 0.0 to 1.0
tempo - number of quarter notes per minute (eg. 120)
Note that there's a quarter note rest at the beginning and at the end.
"""
return Stream([
MetronomeMark(number=tempo),
make_instrument(int(midi_instrument)),
chord_with_volume(
Chord([Note(midi=int(midi_number), duration=Duration(duration))]),
volume)
])
inter_cqt_tuning(mag_exp, cqt_threshold, pre_post_max, backtrack)
# Estimate Tempo
tempo, beats = librosa.beat.beat_track(y=None,
sr=fs,
onset_envelope=onsets[2],
hop_length=hop_length,
start_bpm=120.0,
tightness=100,
trim=True,
bpm=None,
units='frames')
tempo = int(2 * round(tempo / 2))
print("BPM: {}".format(tempo))
mm = MetronomeMark(referent='quarter', number=tempo)
# Convert Seconds to Quarter-Notes
def time_to_beat(duration, tempo):
return (tempo * duration / 60)
# Remap input to 0-1 for Sine Amplitude or to 0-127 for MIDI
def remap(x, in_min, in_max, out_min, out_max):
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
# Generate Sinewave and music21 notes
def generate_sine_midi_note(f0_info, sr, n_duration):
f0 = f0_info[0]
def to_music21_metronome(tempo: Tempo) -> MetronomeMark:
"""Return a Tempo object as a music21 MetronomeMark object."""
metronome = MetronomeMark(number=tempo.qpm)
metronome.offset = tempo.time
return metronome
args.melody, args.series))
# Pick melody
if args.melody == 'little_happiness':
melody = converter.parse(A_LITTLE_HAPPINESS)
elif args.melody == 'jj_lin':
melody = converter.parse(JJ_LIN_MELODY)
else:
print('Unrecognized melody: should be jj_lin or little_happiness')
sys.exit(1)
if args.series not in ('major', 'minor'):
print('Unrecognized series: should be major or minor')
sys.exit(1)
melody.insert(0, MetronomeMark(number=95))
# Pick algorithm
if args.algorithm == 'basic':
chord_search.run(chords, melody, args.series)
elif args.algorithm == 'hmm':
viterbi.run(chords, melody, args.series)
else:
print('Unrecognized algorithm: should be basic or hmm')
sys.exit(1)
# Combine two parts
song = Stream()
song.insert(0, melody)
song.insert(0, chords)
def tensors_to_stream(outputs, config, metadata=None):
cur_measure_number = 0
parts = {}
for part_name in outputs.keys():
if part_name == 'extra':
continue
part = Part(id=part_name)
parts[part_name] = part
last_time_signature = None
cur_time_signature = '4/4'
for step in range(outputs['soprano'].shape[0]):
extra = outputs['extra'][step]
if extra[indices_extra['has_time_signature_3/4']].item() == 1:
cur_time_signature = '3/4'
elif extra[indices_extra['has_time_signature_4/4']].item() == 1:
cur_time_signature = '4/4'
elif extra[indices_extra['has_time_signature_3/2']].item() == 1:
cur_time_signature = '3/2'
cur_time_pos = extra[indices_extra['time_pos']].item()
has_fermata = extra[indices_extra['has_fermata']].item() == 1
if cur_time_pos == 1.0 or cur_measure_number == 0:
for part_name, part in parts.items():
part.append(Measure(number=cur_measure_number))
if cur_measure_number == 0:
if part_name in ['soprano', 'alto']:
part[-1].append(clef.TrebleClef())
else:
part[-1].append(clef.BassClef())
key = int(
torch.argmax(
outputs['extra'][0, indices_extra['has_sharps_0']:
indices_extra['has_sharps_11'] +
1],
dim=0).item())
if key >= 6:
key -= 12
part[-1].append(KeySignature(key))
part[-1].append(MetronomeMark(number=90))
cur_measure_number += 1
if last_time_signature is None or cur_time_signature != last_time_signature:
for part in parts.values():
part[-1].append(TimeSignature(cur_time_signature))
last_time_signature = cur_time_signature
for part_name, part in parts.items():
idx = torch.argmax(outputs[part_name][step]).item()
if idx == indices_parts['is_continued']:
try:
last_element = part[-1].flat.notesAndRests[-1]
cur_element = deepcopy(last_element)
if last_element.tie is not None and last_element.tie.type == 'stop':
last_element.tie = Tie('continue')
else:
last_element.tie = Tie('start')
cur_element.tie = Tie('stop')
except IndexError:
logging.debug(
'Warning: "is_continued" on first beat. Replaced by rest.'
)
cur_element = Rest(quarterLength=config.time_grid)
part[-1].append(cur_element)
elif idx == indices_parts['is_rest']:
part[-1].append(Rest(quarterLength=config.time_grid))
else:
pitch = Pitch()
part[-1].append(Note(pitch, quarterLength=config.time_grid))
# Set pitch value AFTER appending to measure in order to avoid unnecessary accidentals
pitch.midi = idx + min_pitches[part_name] - len(indices_parts)
if has_fermata:
for part in parts.values():
fermata = Fermata()
fermata.type = 'upright'
part[-1][-1].expressions.append(fermata)
score = Score()
if metadata is not None:
score.append(Metadata())
score.metadata.title = f"{metadata.title} ({metadata.number})"
score.metadata.composer = f"Melody: {metadata.composer}\nArrangement: BachNet ({datetime.now().year})"
for part in parts.values():
part[-1].rightBarline = 'light-heavy'
score.append(parts['soprano'])
if 'alto' in parts:
score.append(parts['alto'])
score.append(parts['tenor'])
score.append(parts['bass'])
score.stripTies(inPlace=True, retainContainers=True)
return score
def __init__(self, ranges=False):
score = self.score = Score()
self.instruments = self.i = Instruments()
self.parts = Parts(self.i)
# Make Metadata
timestamp = datetime.datetime.utcnow()
metadata = Metadata()
metadata.title = 'Early Montreal'
metadata.composer = 'Jonathan Marmor'
metadata.date = timestamp.strftime('%Y/%m/%d')
score.insert(0, metadata)
[score.insert(0, part) for part in self.parts.l]
score.insert(0, StaffGroup(self.parts.l))
if ranges:
# Don't make a piece, just show the instrument ranges
for inst, part in zip(self.instruments.l, self.parts.l):
measure = Measure()
measure.timeSignature = TimeSignature('4/4')
low = Note(inst.lowest_note)
measure.append(low)
high = Note(inst.highest_note)
measure.append(high)
part.append(measure)
return
# 18 to 21 minutes
piece_duration_minutes = scale(random.random(), 0, 1, 18, 21)
# Make the "songs"
songs = []
total_minutes = 0
n = 1
while total_minutes < piece_duration_minutes:
print 'Song {}'.format(n)
n += 1
song = Song(self)
songs.append(song)
total_minutes += song.duration_minutes
# Make notation
previous_duration = None
for song in songs:
for bar in song.bars:
for part in bar.parts:
measure = Measure()
if bar.tempo:
measure.insert(
0,
MetronomeMark(number=bar.tempo,
referent=Duration(1)))
measure.leftBarline = 'double'
if bar.duration != previous_duration:
ts = TimeSignature('{}/4'.format(bar.duration))
measure.timeSignature = ts
# Fix Durations
durations = [note['duration'] for note in part['notes']]
components_list = split_at_beats(durations)
components_list = [
join_quarters(note_components)
for note_components in components_list
]
for note, components in zip(part['notes'],
components_list):
note['durations'] = components
for note in part['notes']:
if note['pitch'] == 'rest':
n = Rest()
if isinstance(note['pitch'], list):
pitches = []
for pitch_number in note['pitch']:
p = Pitch(pitch_number)
# Force all flats
if p.accidental.name == 'sharp':
p = p.getEnharmonic()
pitches.append(p)
n = Chord(notes=pitches)
# TODO add slurs
# TODO add glissandos
# TODO add -50 cent marks
else:
p = Pitch(note['pitch'])
# Force all flats
if p.accidental.name == 'sharp':
p = p.getEnharmonic()
n = Note(p)
# TODO add slurs
# TODO add glissandos
# TODO add -50 cent marks
d = Duration()
if note['duration'] == 0:
d.quarterLength = .5
d = d.getGraceDuration()
else:
d.fill(note['durations'])
n.duration = d
measure.append(n)
self.parts.d[part['instrument_name']].append(measure)
previous_duration = bar.duration