def testExtractDrumTracksTooShort(self):
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0,
[(12, 127, 3, 4), (14, 50, 6, 7)],
is_drum=True)
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
drum_tracks, _ = drum_pipelines.extract_drum_tracks(
quantized_sequence, min_bars=2, gap_bars=1)
drum_tracks = [list(drums) for drums in drum_tracks]
self.assertEqual([], drum_tracks)
del self.note_sequence.notes[:]
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0,
[(12, 127, 3, 4), (14, 50, 7, 8)],
is_drum=True)
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
drum_tracks, _ = drum_pipelines.extract_drum_tracks(
quantized_sequence, min_bars=2, gap_bars=1)
drum_tracks = [list(drums) for drums in drum_tracks]
self.assertEqual(
[[NO_DRUMS, NO_DRUMS, NO_DRUMS, DRUMS(12), NO_DRUMS, NO_DRUMS, NO_DRUMS,
DRUMS(14)]],
drum_tracks)
def testExtractPianorollSequences(self):
music_testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(60, 100, 0.0, 4.0)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
seqs, _ = pianoroll_pipeline.extract_pianoroll_sequences(
quantized_sequence)
self.assertLen(seqs, 1)
seqs, _ = pianoroll_pipeline.extract_pianoroll_sequences(
quantized_sequence, min_steps_discard=2, max_steps_discard=5)
self.assertLen(seqs, 1)
self.note_sequence.notes[0].end_time = 1.0
self.note_sequence.total_time = 1.0
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
seqs, _ = pianoroll_pipeline.extract_pianoroll_sequences(
quantized_sequence, min_steps_discard=3, max_steps_discard=5)
self.assertEmpty(seqs)
self.note_sequence.notes[0].end_time = 10.0
self.note_sequence.total_time = 10.0
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
seqs, _ = pianoroll_pipeline.extract_pianoroll_sequences(
quantized_sequence, min_steps_discard=3, max_steps_discard=5)
self.assertEmpty(seqs)
def testExtractPolyphonicSequences(self):
testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(60, 100, 0.0, 4.0)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
seqs, _ = polyphony_lib.extract_polyphonic_sequences(
quantized_sequence)
self.assertEqual(1, len(seqs))
seqs, _ = polyphony_lib.extract_polyphonic_sequences(
quantized_sequence, min_steps_discard=2, max_steps_discard=5)
self.assertEqual(1, len(seqs))
self.note_sequence.notes[0].end_time = 1.0
self.note_sequence.total_time = 1.0
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
seqs, _ = polyphony_lib.extract_polyphonic_sequences(
quantized_sequence, min_steps_discard=3, max_steps_discard=5)
self.assertEqual(0, len(seqs))
self.note_sequence.notes[0].end_time = 10.0
self.note_sequence.total_time = 10.0
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
seqs, _ = polyphony_lib.extract_polyphonic_sequences(
quantized_sequence, min_steps_discard=3, max_steps_discard=5)
self.assertEqual(0, len(seqs))
def testExtractMelodiesMelodyTooShort(self):
music_testing_lib.add_track_to_sequence(self.note_sequence,
0, [(12, 127, 2, 4),
(14, 50, 6, 7)])
music_testing_lib.add_track_to_sequence(self.note_sequence,
1, [(12, 127, 2, 4),
(14, 50, 6, 8)])
music_testing_lib.add_track_to_sequence(self.note_sequence,
2, [(12, 127, 2, 4),
(14, 50, 6, 9)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
expected = [[
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT, 14, NO_EVENT
],
[
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT,
14, NO_EVENT, NO_EVENT
]]
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence,
min_bars=2,
gap_bars=1,
min_unique_pitches=2,
ignore_polyphonic_notes=True)
melodies = [list(melody) for melody in melodies]
self.assertEqual(expected, melodies)
def testExtractMultipleMelodiesFromSameTrack(self):
music_testing_lib.add_track_to_sequence(self.note_sequence,
0, [(12, 100, 2, 4),
(11, 1, 6, 11)])
music_testing_lib.add_track_to_sequence(self.note_sequence,
1, [(12, 127, 2, 4),
(14, 50, 6, 8),
(50, 100, 33, 37),
(52, 100, 34, 37)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
expected = [[
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT, 11, NO_EVENT,
NO_EVENT, NO_EVENT, NO_EVENT
], [
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT, 14, NO_EVENT
], [NO_EVENT, 50, 52, NO_EVENT, NO_EVENT]]
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence,
min_bars=1,
gap_bars=2,
min_unique_pitches=2,
ignore_polyphonic_notes=True)
melodies = sorted([list(melody) for melody in melodies])
self.assertEqual(expected, melodies)
def testExtractPerformancesRelativeQuantized(self):
self.note_sequence.tempos.add(qpm=60.0)
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0, [(60, 100, 0.0, 4.0)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=100)
perfs, _ = performance_pipeline.extract_performances \
(quantized_sequence)
self.assertLen(perfs, 1)
perfs, _ = performance_pipeline.extract_performances(
quantized_sequence, min_events_discard=1, max_events_truncate=10)
self.assertLen(perfs, 1)
perfs, _ = performance_pipeline.extract_performances(
quantized_sequence, min_events_discard=8, max_events_truncate=10)
self.assertEmpty(perfs)
perfs, _ = performance_pipeline.extract_performances(
quantized_sequence, min_events_discard=1, max_events_truncate=3)
self.assertLen(perfs, 1)
self.assertLen(perfs[0], 3)
perfs, _ = performance_pipeline.extract_performances(
quantized_sequence, max_steps_truncate=100)
self.assertLen(perfs, 1)
self.assertEqual(100, perfs[0].num_steps)
def testFromQuantizedNoteSequenceNotCommonTimeSig(self):
self.note_sequence.time_signatures[0].numerator = 7
self.note_sequence.time_signatures[0].denominator = 8
testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(12, 100, 0.01, 10.0),
(11, 55, 0.22, 0.50),
(40, 45, 2.50, 3.50),
(55, 120, 4.0, 4.01),
(52, 99, 4.75, 5.0)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
melody = melodies_lib.Melody()
melody.from_quantized_sequence(quantized_sequence,
search_start_step=0,
instrument=0)
expected = ([
12, 11, NOTE_OFF, NO_EVENT, NO_EVENT, NO_EVENT, NO_EVENT, NO_EVENT,
NO_EVENT, NO_EVENT, 40, NO_EVENT, NO_EVENT, NO_EVENT, NOTE_OFF,
NO_EVENT, 55, NOTE_OFF, NO_EVENT, 52
])
self.assertEqual(expected, list(melody))
self.assertEqual(14, melody.steps_per_bar)
def testMelodyExtractor(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)])
quantized_sequence = sequences_lib.quantize_note_sequence(
note_sequence, steps_per_quarter=1)
expected_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_melodies = []
for events_list in expected_events:
melody = melodies_lib.Melody(events_list,
steps_per_quarter=1,
steps_per_bar=4)
expected_melodies.append(melody)
unit = melody_pipelines.MelodyExtractor(min_bars=1,
min_unique_pitches=1,
gap_bars=1)
self._unit_transform_test(unit, quantized_sequence, expected_melodies)
def testInferChordsForSequence(self):
sequence = music_pb2.NoteSequence()
testing_lib.add_track_to_sequence(
sequence,
0,
[
(60, 100, 0.0, 1.0),
(64, 100, 0.0, 1.0),
(67, 100, 0.0, 1.0), # C
(62, 100, 1.0, 2.0),
(65, 100, 1.0, 2.0),
(69, 100, 1.0, 2.0), # Dm
(60, 100, 2.0, 3.0),
(65, 100, 2.0, 3.0),
(69, 100, 2.0, 3.0), # F
(59, 100, 3.0, 4.0),
(62, 100, 3.0, 4.0),
(67, 100, 3.0, 4.0)
]) # G
quantized_sequence = sequences_lib.quantize_note_sequence(
sequence, steps_per_quarter=4)
chord_inference.infer_chords_for_sequence(quantized_sequence,
chords_per_bar=2)
expected_chords = [('C', 0.0), ('Dm', 1.0), ('F', 2.0), ('G', 3.0)]
chords = [(ta.text, ta.time)
for ta in quantized_sequence.text_annotations]
self.assertEqual(expected_chords, chords)
def transform(self, note_sequence):
try:
if self._steps_per_quarter is not None:
quantized_sequence = sequences_lib.quantize_note_sequence(
note_sequence, self._steps_per_quarter)
else:
quantized_sequence = sequences_lib.quantize_note_sequence_absolute(
note_sequence, self._steps_per_second)
return [quantized_sequence]
except sequences_lib.MultipleTimeSignatureError as e:
tf.logging.warning(
'Multiple time signatures in NoteSequence %s: %s',
note_sequence.filename, e)
self._set_stats([
statistics.Counter(
'sequences_discarded_because_multiple_time_signatures', 1)
])
return []
except sequences_lib.MultipleTempoError as e:
tf.logging.warning('Multiple tempos found in NoteSequence %s: %s',
note_sequence.filename, e)
self._set_stats([
statistics.Counter(
'sequences_discarded_because_multiple_tempos', 1)
])
return []
except sequences_lib.BadTimeSignatureError as e:
tf.logging.warning('Bad time signature in NoteSequence %s: %s',
note_sequence.filename, e)
self._set_stats([
statistics.Counter(
'sequences_discarded_because_bad_time_signature', 1)
])
return []
def midi_file_to_melody(midi_file, steps_per_quarter=4, qpm=None,
ignore_polyphonic_notes=True):
"""Loads a melody from a MIDI file.
Args:
midi_file: Absolute path to MIDI file.
steps_per_quarter: Quantization of Melody. For example, 4 = 16th notes.
qpm: Tempo in quarters per a minute. If not set, tries to use the first
tempo of the midi track and defaults to
note_seq.DEFAULT_QUARTERS_PER_MINUTE if fails.
ignore_polyphonic_notes: Only use the highest simultaneous note if True.
Returns:
A Melody object extracted from the MIDI file.
"""
sequence = midi_io.midi_file_to_sequence_proto(midi_file)
if qpm is None:
if sequence.tempos:
qpm = sequence.tempos[0].qpm
else:
qpm = constants.DEFAULT_QUARTERS_PER_MINUTE
quantized_sequence = sequences_lib.quantize_note_sequence(
sequence, steps_per_quarter=steps_per_quarter)
melody = Melody()
melody.from_quantized_sequence(
quantized_sequence, ignore_polyphonic_notes=ignore_polyphonic_notes)
return melody
def testExtractChordsForMelodies(self):
music_testing_lib.add_track_to_sequence(self.note_sequence,
0, [(12, 100, 2, 4),
(11, 1, 6, 11)])
music_testing_lib.add_track_to_sequence(self.note_sequence,
1, [(12, 127, 2, 4),
(14, 50, 6, 8),
(50, 100, 33, 37),
(52, 100, 34, 37)])
music_testing_lib.add_chords_to_sequence(self.note_sequence,
[('C', 2), ('G7', 6),
('Cmaj7', 33)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence,
min_bars=1,
gap_bars=2,
min_unique_pitches=2,
ignore_polyphonic_notes=True)
chord_progressions, _ = chord_pipelines.extract_chords_for_melodies(
quantized_sequence, melodies)
expected = [[
NO_CHORD, NO_CHORD, 'C', 'C', 'C', 'C', 'G7', 'G7', 'G7', 'G7',
'G7'
], [NO_CHORD, NO_CHORD, 'C', 'C', 'C', 'C', 'G7', 'G7'],
['G7', 'Cmaj7', 'Cmaj7', 'Cmaj7', 'Cmaj7']]
self.assertEqual(expected,
[list(chords) for chords in chord_progressions])
def testEventListChordsWithMelodies(self):
note_sequence = music_pb2.NoteSequence(ticks_per_quarter=220)
note_sequence.tempos.add(qpm=60.0)
testing_lib.add_chords_to_sequence(note_sequence,
[('N.C.', 0), ('C', 2), ('G7', 6)])
note_sequence.total_time = 8.0
melodies = [
melodies_lib.Melody([60, -2, -2, -1],
start_step=0,
steps_per_quarter=1,
steps_per_bar=4),
melodies_lib.Melody([62, -2, -2, -1],
start_step=4,
steps_per_quarter=1,
steps_per_bar=4),
]
quantized_sequence = sequences_lib.quantize_note_sequence(
note_sequence, steps_per_quarter=1)
chords = chords_lib.event_list_chords(quantized_sequence, melodies)
expected_chords = [[NO_CHORD, NO_CHORD, 'C', 'C'],
['C', 'C', 'G7', 'G7']]
self.assertEqual(expected_chords, chords)
def testExtractLeadSheetFragments(self):
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0,
[(12, 100, .5, 1), (11, 1, 1.5, 2.75)])
music_testing_lib.add_track_to_sequence(
self.note_sequence, 1,
[(12, 127, .5, 1), (14, 50, 1.5, 2),
(50, 100, 8.25, 9.25), (52, 100, 8.5, 9.25)])
music_testing_lib.add_chords_to_sequence(
self.note_sequence,
[('C', .5), ('G7', 1.5), ('Cmaj7', 8.25)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
lead_sheets, _ = lead_sheet_pipelines.extract_lead_sheet_fragments(
quantized_sequence, min_bars=1, gap_bars=2, min_unique_pitches=2,
ignore_polyphonic_notes=True, require_chords=True)
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence, min_bars=1, gap_bars=2, min_unique_pitches=2,
ignore_polyphonic_notes=True)
chord_progressions, _ = chord_pipelines.extract_chords_for_melodies(
quantized_sequence, melodies)
self.assertEqual(list(melodies),
list(lead_sheet.melody for lead_sheet in lead_sheets))
self.assertEqual(list(chord_progressions),
list(lead_sheet.chords for lead_sheet in lead_sheets))
def testExtractLeadSheetFragmentsNoChords(self):
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0,
[(12, 100, 2, 4), (11, 1, 6, 11)])
music_testing_lib.add_track_to_sequence(
self.note_sequence, 1,
[(12, 127, 2, 4), (14, 50, 6, 8),
(50, 100, 33, 37), (52, 100, 34, 37)])
music_testing_lib.add_chords_to_sequence(
self.note_sequence,
[('C', 2), ('G7', 6), (NO_CHORD, 10)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
lead_sheets, stats = lead_sheet_pipelines.extract_lead_sheet_fragments(
quantized_sequence, min_bars=1, gap_bars=2, min_unique_pitches=2,
ignore_polyphonic_notes=True, require_chords=True)
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence, min_bars=1, gap_bars=2, min_unique_pitches=2,
ignore_polyphonic_notes=True)
chord_progressions, _ = chord_pipelines.extract_chords_for_melodies(
quantized_sequence, melodies)
stats_dict = dict((stat.name, stat) for stat in stats)
# Last lead sheet should be rejected for having no chords.
self.assertEqual(list(melodies[:2]),
list(lead_sheet.melody for lead_sheet in lead_sheets))
self.assertEqual(list(chord_progressions[:2]),
list(lead_sheet.chords for lead_sheet in lead_sheets))
self.assertEqual(stats_dict['empty_chord_progressions'].count, 1)
def testExtractMelodiesTooFewPitches(self):
# Test that extract_melodies discards melodies with too few pitches where
# pitches are equivalent by octave.
music_testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(12, 100, 0, 1),
(13, 100, 1, 2),
(18, 100, 2, 3),
(24, 100, 3, 4),
(25, 100, 4, 5)])
music_testing_lib.add_track_to_sequence(self.note_sequence, 1,
[(12, 100, 0, 1),
(13, 100, 1, 2),
(18, 100, 2, 3),
(25, 100, 3, 4),
(26, 100, 4, 5)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
expected = [[12, 13, 18, 25, 26]]
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence,
min_bars=1,
gap_bars=1,
min_unique_pitches=4,
ignore_polyphonic_notes=True)
melodies = [list(melody) for melody in melodies]
self.assertEqual(expected, melodies)
def testExtractChordsForMelodiesCoincidentChords(self):
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0,
[(12, 100, 2, 4), (11, 1, 6, 11)])
music_testing_lib.add_track_to_sequence(
self.note_sequence, 1,
[(12, 127, 2, 4), (14, 50, 6, 8),
(50, 100, 33, 37), (52, 100, 34, 37)])
music_testing_lib.add_chords_to_sequence(
self.note_sequence,
[('C', 2), ('G7', 6), ('E13', 8), ('Cmaj7', 8)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence, min_bars=1, gap_bars=2, min_unique_pitches=2,
ignore_polyphonic_notes=True)
chord_progressions, stats = chord_pipelines.extract_chords_for_melodies(
quantized_sequence, melodies)
expected = [[NO_CHORD, NO_CHORD, 'C', 'C', 'C', 'C', 'G7', 'G7'],
['Cmaj7', 'Cmaj7', 'Cmaj7', 'Cmaj7', 'Cmaj7']]
stats_dict = dict((stat.name, stat) for stat in stats)
self.assertIsNone(chord_progressions[0])
self.assertEqual(expected,
[list(chords) for chords in chord_progressions[1:]])
self.assertEqual(stats_dict['coincident_chords'].count, 1)
def testExtractMelodiesSimple(self):
music_testing_lib.add_track_to_sequence(self.note_sequence,
0, [(12, 100, 2, 4),
(11, 1, 6, 7)])
music_testing_lib.add_track_to_sequence(self.note_sequence,
1, [(12, 127, 2, 4),
(14, 50, 6, 9)])
music_testing_lib.add_track_to_sequence(self.note_sequence,
9, [(13, 100, 2, 4),
(15, 25, 6, 8)],
is_drum=True)
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
expected = [[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, NO_EVENT
]]
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence,
min_bars=1,
gap_bars=1,
min_unique_pitches=2,
ignore_polyphonic_notes=True)
self.assertLen(melodies, 2)
self.assertIsInstance(melodies[0], melodies_lib.Melody)
self.assertIsInstance(melodies[1], melodies_lib.Melody)
melodies = sorted([list(melody) for melody in melodies])
self.assertEqual(expected, melodies)
def testFromRelativeQuantizedNoteSequence(self):
self.note_sequence.tempos.add(qpm=60.0)
testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(60, 100, 0.0, 4.0),
(64, 100, 0.0, 3.0),
(67, 100, 1.0, 2.0)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=100)
performance = performance_lib.MetricPerformance(quantized_sequence)
self.assertEqual(100, performance.steps_per_quarter)
pe = performance_lib.PerformanceEvent
expected_performance = [
pe(pe.NOTE_ON, 60),
pe(pe.NOTE_ON, 64),
pe(pe.TIME_SHIFT, 100),
pe(pe.NOTE_ON, 67),
pe(pe.TIME_SHIFT, 100),
pe(pe.NOTE_OFF, 67),
pe(pe.TIME_SHIFT, 100),
pe(pe.NOTE_OFF, 64),
pe(pe.TIME_SHIFT, 100),
pe(pe.NOTE_OFF, 60),
]
self.assertEqual(expected_performance, list(performance))
def testDrumsExtractor(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), (12, 1, 6, 8)],
is_drum=True)
music_testing_lib.add_track_to_sequence(
note_sequence, 1,
[(12, 127, 2, 4), (14, 50, 6, 8)])
quantized_sequence = sequences_lib.quantize_note_sequence(
note_sequence, steps_per_quarter=1)
expected_events = [
[NO_DRUMS, NO_DRUMS, DRUMS(12), NO_DRUMS, NO_DRUMS, NO_DRUMS,
DRUMS(11, 12)]]
expected_drum_tracks = []
for events_list in expected_events:
drums = drums_lib.DrumTrack(
events_list, steps_per_quarter=1, steps_per_bar=4)
expected_drum_tracks.append(drums)
unit = drum_pipelines.DrumsExtractor(min_bars=1, gap_bars=1)
self._unit_transform_test(unit, quantized_sequence, expected_drum_tracks)
def testExtractMelodiesMelodyTooLongWithPad(self):
music_testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(12, 127, 2, 4),
(14, 50, 6, 15)])
music_testing_lib.add_track_to_sequence(self.note_sequence, 1,
[(12, 127, 2, 4),
(14, 50, 6, 18)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
expected = [[
NO_EVENT, NO_EVENT, 12, NO_EVENT, NOTE_OFF, NO_EVENT, 14, NO_EVENT,
NO_EVENT, NO_EVENT, NO_EVENT, NO_EVENT
]]
melodies, _ = melody_pipelines.extract_melodies(
quantized_sequence,
min_bars=1,
max_steps_truncate=14,
max_steps_discard=18,
gap_bars=1,
min_unique_pitches=2,
ignore_polyphonic_notes=True,
pad_end=True)
melodies = [list(melody) for melody in melodies]
self.assertEqual(expected, melodies)
def testFromQuantizedNoteSequenceNotCommonTimeSig(self):
self.note_sequence.time_signatures[0].numerator = 7
self.note_sequence.time_signatures[0].denominator = 8
testing_lib.add_track_to_sequence(self.note_sequence,
0, [(12, 100, 0, 10),
(11, 55, .25, .5),
(40, 45, 2.5, 3.5),
(30, 80, 2.5, 2.75),
(55, 120, 4, 4.25),
(52, 99, 4.75, 5)],
is_drum=True)
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
drums = drums_lib.DrumTrack()
drums.from_quantized_sequence(quantized_sequence, search_start_step=0)
expected = ([
DRUMS(12),
DRUMS(11), NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS,
NO_DRUMS, NO_DRUMS, NO_DRUMS,
DRUMS(30, 40), NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS,
DRUMS(55), NO_DRUMS, NO_DRUMS,
DRUMS(52)
])
self.assertEqual(expected, list(drums))
self.assertEqual(14, drums.steps_per_bar)
def testExtractMelodiesStatistics(self):
music_testing_lib.add_track_to_sequence(
self.note_sequence, 0,
[(12, 100, 2, 4), (11, 1, 6, 7), (10, 100, 8, 10), (9, 100, 11, 14),
(8, 100, 16, 40), (7, 100, 41, 42)])
music_testing_lib.add_track_to_sequence(
self.note_sequence, 1,
[(12, 127, 2, 4), (14, 50, 2, 8)])
music_testing_lib.add_track_to_sequence(
self.note_sequence, 2,
[(12, 127, 0, 1)])
music_testing_lib.add_track_to_sequence(
self.note_sequence, 3,
[(12, 127, 2, 4), (12, 50, 6, 8)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
_, stats = melody_pipelines.extract_melodies(
quantized_sequence, min_bars=1, gap_bars=1, min_unique_pitches=2,
ignore_polyphonic_notes=False)
stats_dict = dict((stat.name, stat) for stat in stats)
self.assertEqual(stats_dict['polyphonic_tracks_discarded'].count, 1)
self.assertEqual(stats_dict['melodies_discarded_too_short'].count, 1)
self.assertEqual(stats_dict['melodies_discarded_too_few_pitches'].count, 1)
self.assertEqual(
stats_dict['melody_lengths_in_bars'].counters,
{float('-inf'): 0, 0: 0, 1: 0, 2: 0, 10: 1, 20: 0, 30: 0, 40: 0, 50: 0,
100: 0, 200: 0, 500: 0})
def testFromQuantizedNoteSequence(self):
testing_lib.add_track_to_sequence(self.note_sequence, 0,
[(60, 100, 0.0, 4.0),
(64, 100, 0.0, 3.0),
(67, 100, 1.0, 2.0)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=1)
poly_seq = list(polyphony_lib.PolyphonicSequence(quantized_sequence))
pe = polyphony_lib.PolyphonicEvent
expected_poly_seq = [
pe(pe.START, None),
# step 0
pe(pe.NEW_NOTE, 64),
pe(pe.NEW_NOTE, 60),
pe(pe.STEP_END, None),
# step 1
pe(pe.NEW_NOTE, 67),
pe(pe.CONTINUED_NOTE, 64),
pe(pe.CONTINUED_NOTE, 60),
pe(pe.STEP_END, None),
# step 2
pe(pe.CONTINUED_NOTE, 64),
pe(pe.CONTINUED_NOTE, 60),
pe(pe.STEP_END, None),
# step 3
pe(pe.CONTINUED_NOTE, 60),
pe(pe.STEP_END, None),
pe(pe.END, None),
]
self.assertEqual(expected_poly_seq, poly_seq)
def testFromQuantizedNoteSequenceMultipleTracks(self):
testing_lib.add_track_to_sequence(self.note_sequence,
0, [(12, 100, 0, 10),
(40, 45, 2.5, 3.5),
(60, 100, 4, 5.5)],
is_drum=True)
testing_lib.add_track_to_sequence(self.note_sequence,
1, [(11, 55, .25, .5),
(55, 120, 4, 4.25),
(52, 99, 4.75, 5)],
is_drum=True)
testing_lib.add_track_to_sequence(self.note_sequence,
2, [(13, 100, 0, 10),
(14, 45, 2.5, 3.5),
(15, 100, 4, 5.5)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
drums = drums_lib.DrumTrack()
drums.from_quantized_sequence(quantized_sequence, search_start_step=0)
expected = ([
DRUMS(12),
DRUMS(11), NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS,
NO_DRUMS, NO_DRUMS, NO_DRUMS,
DRUMS(40), NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS, NO_DRUMS,
DRUMS(55, 60), NO_DRUMS, NO_DRUMS,
DRUMS(52)
])
self.assertEqual(expected, list(drums))
self.assertEqual(16, drums.steps_per_bar)
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 testFromNotesStepsPerBar(self):
self.note_sequence.time_signatures[0].numerator = 7
self.note_sequence.time_signatures[0].denominator = 8
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, steps_per_quarter=12)
drums = drums_lib.DrumTrack()
drums.from_quantized_sequence(quantized_sequence, search_start_step=0)
self.assertEqual(42, drums.steps_per_bar)
def testExtractChords(self):
music_testing_lib.add_chords_to_sequence(
self.note_sequence, [('C', 2), ('G7', 6), ('F', 8)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
quantized_sequence.total_quantized_steps = 10
chord_progressions, _ = chord_pipelines.extract_chords(quantized_sequence)
expected = [[NO_CHORD, NO_CHORD, 'C', 'C', 'C', 'C', 'G7', 'G7', 'F', 'F']]
self.assertEqual(expected, [list(chords) for chords in chord_progressions])
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))
