def save_midi(self, midi_file_path, onehot_mat, ticksPerQuarterNote=1024):
"""
:param midi_file_path: path to save midi file which is made after predicting
:param onehot_mat: matrix having notes infomation made after predicting
:param ticksPerQuarterNote: criterion of note`s length(duration)
:return:
"""
# tick step = 8th note, quaver
tick_step = ticksPerQuarterNote / 2
# extract note info from one-hot matrix
result = []
for i in range(onehot_mat.shape[0]):
for j in range(onehot_mat.shape[1]):
# if flow is started with new note info, then add new info to result list
if i == 0:
if onehot_mat[i, j] == 1:
result.append({'time': i * tick_step, 'note': j})
else:
if onehot_mat[i, j] == 1 and onehot_mat[i - 1, j] == 0:
result.append({'time': i * tick_step, 'note': j})
# manufacture result list with unroll package`s Keystrike
ks = KeyStrikes(result)
# convert ks to have duration
ks = ks.quantized(ticksPerQuarterNote)
# convert ks to music21`s stream
s = ks._to_music21stream()
# convert s to midi format, again T^T
mf = music21.midi.translate.streamToMidiFile(s)
# save mf info with file
mf.open(midi_file_path, 'wb')
mf.write()
mf.close()
print '\tMidi file(=%s) successfully saved. Total 1/8 beats = %d' % (
midi_file_path, onehot_mat.shape[0])
def save_midi(self, midi_file_path, onehot_mat, ticksPerQuarterNote=1024):
"""
:param midi_file_path: predict 후 만들어진 midi file 을 저장할 path
:param onehot_mat: predict 결과 만들어진 notes 정보를 가진 matrix
:param ticksPerQuarterNote: note 의 길이 기준
:return:
"""
# 틱 간격은 8분의 1음표 단위로
tick_step = ticksPerQuarterNote / 2
# onehot matrix에서 note 정보 추출.
result = []
for i in range(onehot_mat.shape[0]):
for j in range(onehot_mat.shape[1]):
# 새로운 노트가 시작될 경우에 리스트에 추가.
if i == 0:
if onehot_mat[i, j] == 1:
result.append({'time': i * tick_step, 'note': j})
else:
if onehot_mat[i, j] == 1 and onehot_mat[i - 1, j] == 0:
result.append({'time': i * tick_step, 'note': j})
# unroll 패키지의 Keystrike를 이용해서 가공.
ks = KeyStrikes(result)
# 리스트 형태를 duration 을 가지도록 변환.
ks = ks.quantized(ticksPerQuarterNote)
# music21 스트림으로 변환.
s = ks._to_music21stream()
# 다시 midi 파일 형식으로 변환. ( ㅠ.ㅠ )
mf = music21.midi.translate.streamToMidiFile(s)
# 파일로 저장.
mf.open(midi_file_path, 'wb')
mf.write()
mf.close()
print '\tMidi file(=%s) successfully saved. Total 1/8 beats = %d' % (midi_file_path, onehot_mat.shape[0])
def save_midi(self, midi_file_path, onehot_mat, ticksPerQuarterNote=1024):
"""
:param midi_file_path: path to save midi file which is made after predicting
:param onehot_mat: matrix having notes infomation made after predicting
:param ticksPerQuarterNote: criterion of note`s length(duration)
:return:
"""
# tick step = 8th note, quaver
tick_step = ticksPerQuarterNote / 2
# extract note info from one-hot matrix
result = []
for i in range(onehot_mat.shape[0]):
for j in range(onehot_mat.shape[1]):
# if flow is started with new note info, then add new info to result list
if i == 0:
if onehot_mat[i, j] == 1:
result.append({'time': i * tick_step, 'note': j})
else:
if onehot_mat[i, j] == 1 and onehot_mat[i - 1, j] == 0:
result.append({'time': i * tick_step, 'note': j})
# manufacture result list with unroll package`s Keystrike
ks = KeyStrikes(result)
# convert ks to have duration
ks = ks.quantized(ticksPerQuarterNote)
# convert ks to music21`s stream
s = ks._to_music21stream()
# convert s to midi format, again T^T
mf = music21.midi.translate.streamToMidiFile(s)
# save mf info with file
mf.open(midi_file_path, 'wb')
mf.write()
mf.close()
print '\tMidi file(=%s) successfully saved. Total 1/8 beats = %d' % (midi_file_path, onehot_mat.shape[0])
