def testToSequence(self):
# Sequence produced from lead sheet should contain notes from melody
# sequence and chords from chord sequence as text annotations.
melody = melodies_lib.Melody(
[NO_EVENT, 1, NO_EVENT, NOTE_OFF, NO_EVENT, 2, 3, NOTE_OFF, NO_EVENT])
chords = chords_lib.ChordProgression(
[NO_CHORD, 'A', 'A', 'C#m', 'C#m', 'D', 'B', 'B', 'B'])
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
sequence = lead_sheet.to_sequence(
velocity=10,
instrument=1,
sequence_start_time=2,
qpm=60.0)
melody_sequence = melody.to_sequence(
velocity=10,
instrument=1,
sequence_start_time=2,
qpm=60.0)
chords_sequence = chords.to_sequence(
sequence_start_time=2,
qpm=60.0)
self.assertEqual(melody_sequence.ticks_per_quarter,
sequence.ticks_per_quarter)
self.assertProtoEquals(melody_sequence.tempos, sequence.tempos)
self.assertEqual(melody_sequence.total_time, sequence.total_time)
self.assertProtoEquals(melody_sequence.notes, sequence.notes)
self.assertProtoEquals(chords_sequence.text_annotations,
sequence.text_annotations)
def testFromQuantizedNoteSequenceWithNoChords(self):
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
chords = chords_lib.ChordProgression()
chords.from_quantized_sequence(
quantized_sequence, start_step=0, end_step=16)
expected = [NO_CHORD] * 16
self.assertEqual(expected, list(chords))
def testFromQuantizedNoteSequenceWithCoincidentChords(self):
testing_lib.add_chords_to_sequence(
self.note_sequence,
[('Am', 4), ('D7', 8), ('G13', 12), ('Csus', 12)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
chords = chords_lib.ChordProgression()
with self.assertRaises(chords_lib.CoincidentChordsError):
chords.from_quantized_sequence(
quantized_sequence, start_step=0, end_step=16)
def testFromQuantizedNoteSequenceWithinSingleChord(self):
testing_lib.add_chords_to_sequence(
self.note_sequence, [('F', 0), ('Gm', 8)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
chords = chords_lib.ChordProgression()
chords.from_quantized_sequence(
quantized_sequence, start_step=4, end_step=6)
expected = ['F'] * 2
self.assertEqual(expected, list(chords))
def testTranspose(self):
# Transpose ChordProgression with basic triads.
events = ['Cm', 'F', 'Bb', 'Eb']
chords = chords_lib.ChordProgression(events)
chords.transpose(transpose_amount=7)
expected = ['Gm', 'C', 'F', 'Bb']
self.assertEqual(expected, list(chords))
# Transpose ChordProgression with more complex chords.
events = ['Esus2', 'B13', 'A7/B', 'F#dim']
chords = chords_lib.ChordProgression(events)
chords.transpose(transpose_amount=-2)
expected = ['Dsus2', 'A13', 'G7/A', 'Edim']
self.assertEqual(expected, list(chords))
# Transpose ChordProgression containing NO_CHORD.
events = ['C', 'Bb', NO_CHORD, 'F', 'C']
chords = chords_lib.ChordProgression(events)
chords.transpose(transpose_amount=4)
expected = ['E', 'D', NO_CHORD, 'A', 'E']
self.assertEqual(expected, list(chords))
def testFromQuantizedNoteSequence(self):
testing_lib.add_chords_to_sequence(
self.note_sequence,
[('Am', 4), ('D7', 8), ('G13', 12), ('Csus', 14)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
chords = chords_lib.ChordProgression()
chords.from_quantized_sequence(
quantized_sequence, start_step=0, end_step=16)
expected = [NO_CHORD, NO_CHORD, NO_CHORD, NO_CHORD,
'Am', 'Am', 'Am', 'Am', 'D7', 'D7', 'D7', 'D7',
'G13', 'G13', 'Csus', 'Csus']
self.assertEqual(expected, list(chords))
def testSquash(self):
# LeadSheet squash should agree with melody squash & chords transpose.
melody_events = [12 * 5, NO_EVENT, 12 * 5 + 2,
NOTE_OFF, 12 * 6 + 4, NO_EVENT]
chord_events = ['C', 'Am', 'Dm', 'G', 'C', NO_CHORD]
melody = melodies_lib.Melody(melody_events)
chords = chords_lib.ChordProgression(chord_events)
expected_melody = copy.deepcopy(melody)
expected_chords = copy.deepcopy(chords)
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
lead_sheet.squash(min_note=12 * 5, max_note=12 * 6, transpose_to_key=0)
transpose_amount = expected_melody.squash(
min_note=12 * 5, max_note=12 * 6, transpose_to_key=0)
expected_chords.transpose(transpose_amount=transpose_amount)
self.assertEqual(expected_melody, lead_sheet.melody)
self.assertEqual(expected_chords, lead_sheet.chords)
def testTranspose(self):
# LeadSheet transposition should agree with melody & chords transpositions.
melody_events = [12 * 5 + 4, NO_EVENT, 12 * 5 + 5,
NOTE_OFF, 12 * 6, NO_EVENT]
chord_events = [NO_CHORD, 'C', 'F', 'Dm', 'D', 'G']
melody = melodies_lib.Melody(melody_events)
chords = chords_lib.ChordProgression(chord_events)
expected_melody = copy.deepcopy(melody)
expected_chords = copy.deepcopy(chords)
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
lead_sheet.transpose(transpose_amount=-5, min_note=12 * 5, max_note=12 * 7)
expected_melody.transpose(
transpose_amount=-5, min_note=12 * 5, max_note=12 * 7)
expected_chords.transpose(transpose_amount=-5)
self.assertEqual(expected_melody, lead_sheet.melody)
self.assertEqual(expected_chords, lead_sheet.chords)
def testLeadSheetExtractor(self):
note_sequence = common_testing_lib.parse_test_proto(
music_pb2.NoteSequence, """
time_signatures: {
numerator: 4
denominator: 4}
tempos: {
qpm: 60}""")
music_testing_lib.add_track_to_sequence(note_sequence,
0, [(12, 100, 2, 4),
(11, 1, 6, 7)])
music_testing_lib.add_track_to_sequence(note_sequence,
1, [(12, 127, 2, 4),
(14, 50, 6, 8)])
music_testing_lib.add_chords_to_sequence(note_sequence, [('Cm7', 2),
('F9', 4),
('G7b9', 6)])
quantized_sequence = sequences_lib.quantize_note_sequence(
note_sequence, steps_per_quarter=1)
expected_melody_events = [[
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT, 11
], [
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT, 14, NO_EVENT
]]
expected_chord_events = [[
NO_CHORD, NO_CHORD, 'Cm7', 'Cm7', 'F9', 'F9', 'G7b9'
], [NO_CHORD, NO_CHORD, 'Cm7', 'Cm7', 'F9', 'F9', 'G7b9', 'G7b9']]
expected_lead_sheets = []
for melody_events, chord_events in zip(expected_melody_events,
expected_chord_events):
melody = melodies_lib.Melody(melody_events,
steps_per_quarter=1,
steps_per_bar=4)
chords = chords_lib.ChordProgression(chord_events,
steps_per_quarter=1,
steps_per_bar=4)
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
expected_lead_sheets.append(lead_sheet)
unit = lead_sheet_pipelines.LeadSheetExtractor(
min_bars=1,
min_unique_pitches=1,
gap_bars=1,
all_transpositions=False)
self._unit_transform_test(unit, quantized_sequence,
expected_lead_sheets)
def testSetLength(self): # Setting LeadSheet length should agree with setting length on melody and # chords separately. melody_events = [60] chord_events = ['C7'] melody = melodies_lib.Melody(melody_events, start_step=9) chords = chords_lib.ChordProgression(chord_events, start_step=9) expected_melody = copy.deepcopy(melody) expected_chords = copy.deepcopy(chords) lead_sheet = lead_sheets_lib.LeadSheet(melody, chords) lead_sheet.set_length(5) expected_melody.set_length(5) expected_chords.set_length(5) self.assertEqual(expected_melody, lead_sheet.melody) self.assertEqual(expected_chords, lead_sheet.chords) self.assertEqual(9, lead_sheet.start_step) self.assertEqual(14, lead_sheet.end_step) self.assertListEqual([9, 10, 11, 12, 13], lead_sheet.steps)
def testToSequence(self):
chords = chords_lib.ChordProgression(
[NO_CHORD, 'C7', 'C7', 'C7', 'C7', 'Am7b5', 'F6', 'F6', NO_CHORD])
sequence = chords.to_sequence(sequence_start_time=2, qpm=60.0)
self.assertProtoEquals(
'ticks_per_quarter: 220 '
'tempos < qpm: 60.0 > '
'text_annotations < '
' text: "C7" time: 2.25 annotation_type: CHORD_SYMBOL '
'> '
'text_annotations < '
' text: "Am7b5" time: 3.25 annotation_type: CHORD_SYMBOL '
'> '
'text_annotations < '
' text: "F6" time: 3.5 annotation_type: CHORD_SYMBOL '
'> '
'text_annotations < '
' text: "N.C." time: 4.0 annotation_type: CHORD_SYMBOL '
'> ', sequence)
def testChordsExtractor(self):
note_sequence = common_testing_lib.parse_test_proto(
music_pb2.NoteSequence,
"""
time_signatures: {
numerator: 4
denominator: 4}
tempos: {
qpm: 60}""")
music_testing_lib.add_chords_to_sequence(
note_sequence, [('C', 2), ('Am', 4), ('F', 5)])
quantized_sequence = sequences_lib.quantize_note_sequence(
note_sequence, steps_per_quarter=1)
quantized_sequence.total_quantized_steps = 8
expected_events = [[NO_CHORD, NO_CHORD, 'C', 'C', 'Am', 'F', 'F', 'F']]
expected_chord_progressions = []
for events_list in expected_events:
chords = chords_lib.ChordProgression(
events_list, steps_per_quarter=1, steps_per_bar=4)
expected_chord_progressions.append(chords)
unit = chord_pipelines.ChordsExtractor(all_transpositions=False)
self._unit_transform_test(unit, quantized_sequence,
expected_chord_progressions)
def testTransposeUnknownChordSymbol(self):
# Attempt to transpose ChordProgression with unknown chord symbol.
events = ['Cm', 'G7', 'P#13', 'F']
chords = chords_lib.ChordProgression(events)
with self.assertRaises(chord_symbols_lib.ChordSymbolError):
chords.transpose(transpose_amount=-4)
def _reset(self):
"""Clear events and reset object state."""
self._melody = melodies_lib.Melody()
self._chords = chords_lib.ChordProgression()
