def test_duration():
duration = Duration.from_num_beats(2, Tempo(120))
assert duration.seconds == 1
tempo = Tempo(613)
duration = Duration.from_num_beats(0.5, tempo)
assert duration.beats(tempo) == 0.5
assert Duration.from_num_beats(1, Tempo(120)).samples(44100) == 22050
def test_measure_note_generate():
measure = Measure(Tempo(120), Signature(4, 4))
measure.add_note(Note('C#', 3), 0, 1)
measure.add_note(Note('D', 3), 1, 1)
measure.add_note(Note('E', 3), 2, 1)
measure.add_note(Note('C#', 3), 3, 1)
result = measure.generate_notes(Duration(1.5))
assert result[0].offset.seconds == (measure.notes[0].offset +
Duration(1.5)).seconds
pass
def test_duration_operators():
duration = Duration.from_num_beats(2, Tempo(120))
assert duration.seconds == 1
assert (duration * 2).seconds == 2
assert duration.seconds == 1
assert (2 * duration).seconds == 2
assert duration.seconds == 1
assert (duration + Duration(1)).seconds == 2
assert duration.seconds == 1
pass
def add_note(self, note: Note, position: float, duration: float, velocity=1.0):
"""Add a note to a measure
Args:
note: notes to play
position: position w.r.t. beats in the bar
duration: duration w.r.t. beats in the bar (whole notes is 4 for 4/4)
velocity: relative velocity of the note
Returns:
Measure: self
"""
position = Duration.from_num_beats(position, self.tempo)
duration = Duration.from_num_beats(duration, self.tempo)
self.notes.append(PositionedNote(note, position, duration, velocity))
return self
def generate_note(self,
note: Note,
duration: Duration = Duration(1),
velocity: float = 1):
return self.generator.generate_note(note,
duration.seconds,
amplitude=velocity,
phase=0)
def generate_notes(self):
notes = []
offset = Duration(0)
for measure in self.measures:
notes += measure.generate_notes(offset)
offset += measure.total_time()
return notes
def test_max_duration():
measure = Measure(Tempo(120), Signature(4, 4))
measure.add_note(Note('C#', 3), 0, 1)
measure.add_note(Note('F', 3), 2, 5)
measure.add_note(Note('D', 3), 1, 1)
measure.add_note(Note('E', 3), 2, 1)
measure.add_note(Note('C#', 3), 3, 1)
max_duration = get_max_duration(measure.generate_notes(Duration(1.5)))
assert max_duration.seconds == 5.0
def generate_chord(self, chord: Chord, time: Duration):
tempo = Tempo(120)
measure = Measure(tempo, Signature(4, 4))
for n in chord.notes:
measure.add_note(n, 0, duration=time.beats(tempo))
track = Track([measure])
return self.generate_track(track)