def MCTD(melody_sequence, chord_sequence, chord_num=96):
chord_index = np.argmax(chord_sequence, axis=1)
chord_note = []
if chord_num == 96:
for i in chord_index:
chord_note.append(note2number(chord962note(i)))
else:
for i in chord_index:
chord_note.append(note2number(chord482note(i)))
melody_sequence = melody_sequence.reshape(
(melody_sequence.shape[0] * 48, 12))
melody_index = my_argmax(melody_sequence)
melody_index = melody_index.reshape((-1, 48))
y = 0
count = 0
for melody_m, chord_m in zip(melody_index, chord_note):
for m in melody_m:
if m != -1:
y += np.sqrt(
np.sum((np.asarray(tonal_centroid([m])) -
np.asarray(tonal_centroid(chord_m))))**2)
count += 1
if count == 0:
return 0
return y / count
def PCS(melody_sequence, chord_sequence):
chord_index = np.argmax(chord_sequence, axis=1)
chord_note = []
for i in chord_index:
chord_note.append(
note2number(pianoroll_to_note(INDICES_TO_PIANOROLL[i])))
melody_sequence = melody_sequence.reshape(
(melody_sequence.shape[0] * 48, 12))
melody_index = my_argmax(melody_sequence)
melody_index = melody_index.reshape((-1, 48))
score = 0
count = 0
for melody_m, chord_m in zip(melody_index, chord_note):
for m in melody_m:
if m != -1:
for c in chord_m:
# unison, maj, minor 3rd, perfect 5th, maj, minor 6,
if abs(m - c) == 0 or abs(m - c) == 3 or abs(
m - c) == 4 or abs(m - c) == 7 or abs(
m - c) == 8 or abs(m - c) == 9 or abs(m -
c) == 5:
if abs(m - c) == 5:
count += 1
else:
count += 1
score += 1
else:
count += 1
score += -1
if count == 0:
return 0
return score / count
def CTnCTR(melody_sequence, chord_sequence):
chord_index = np.argmax(chord_sequence, axis=1)
chord_note = []
for i in chord_index:
chord_note.append(
note2number(pianoroll_to_note(INDICES_TO_PIANOROLL[i])))
melody_sequence = melody_sequence.reshape(
(melody_sequence.shape[0] * 48, 12))
melody_index = my_argmax(melody_sequence)
melody_index = melody_index.reshape((-1, 48))
c = 0
p = 0
n = 0
for melody_m, chord_m in zip(melody_index, chord_note):
for i in range(len(melody_m)):
m = melody_m[i]
if m != -1:
if m in chord_m:
c += 1
else:
n += 1
for j in range(i, len(melody_m)):
if melody_m[j] != -1:
if melody_m[j] != melody_m[i]:
if melody_m[j] in chord_m and abs(
melody_m[i] - melody_m[j]) <= 2:
p += 1
break
if (c + n) == 0:
return 0
return (c + p) / (c + n)
def CTD(chord_sequence, chord_num=96):
chord_index = np.argmax(chord_sequence, axis=1)
chord_note = []
if chord_num == 96:
for i in chord_index:
chord_note.append(note2number(chord962note(i)))
else:
for i in chord_index:
chord_note.append(note2number(chord482note(i)))
y = 0
for n in range(len(chord_note) - 1):
y += np.sqrt(
np.sum((np.asarray(tonal_centroid(chord_note[n + 1])) -
np.asarray(tonal_centroid(chord_note[n])))**2))
return y / (len(chord_note) - 1)
def CTD(chord_sequence):
chord_index = np.argmax(chord_sequence, axis=1)
chord_note = []
for i in chord_index:
chord_note.append(
note2number(pianoroll_to_note(INDICES_TO_PIANOROLL[i])))
y = 0
for n in range(len(chord_note) - 1):
y += np.sqrt(
np.sum((np.asarray(tonal_centroid(chord_note[n + 1])) -
np.asarray(tonal_centroid(chord_note[n])))**2))
if (len(chord_note) - 1) == 0:
return 0
else:
return y / (len(chord_note) - 1)
def MCTD(melody_sequence, chord_sequence):
chord_index = np.argmax(chord_sequence, axis=1)
chord_note = []
for i in chord_index:
chord_note.append(
note2number(pianoroll_to_note(INDICES_TO_PIANOROLL[i])))
melody_sequence = melody_sequence.reshape(
(melody_sequence.shape[0] * 48, 12))
melody_index = my_argmax(melody_sequence)
melody_index = melody_index.reshape((-1, 48))
y = 0
count = 0
for melody_m, chord_m in zip(melody_index, chord_note):
for m in melody_m:
if m != -1:
y += np.sqrt(
np.sum((np.asarray(tonal_centroid([m])) -
np.asarray(tonal_centroid(chord_m))))**2)
count += 1
if count == 0:
return 0
return y / count