def demo_random_new(argv):
mid = Song()
track = mid.add_track()
# header = MidiFile('AutumnL.mid')
for i in range(1000):
note = np.random.randint(60, 100)
# key down
track.append(
Message(
'note_on',
note=note,
velocity=np.random.randint(30, 70),
time=0 if np.random.rand() > 0.8 else np.random.randint(
100, 300),
))
# key up
track.append(
Message(
'note_on',
note=note,
velocity=0,
time=np.random.randint(100, 300),
))
mid.save('new_song.mid')
def demo_copy(argv):
mid = Song()
track = mid.add_track()
source = MidiFile('playground/AutumnL.mid')
# only copy notes
Song._copy(source, track, filter_f=lambda x: x.type == 'note_on')
mid.save('playground/AutumnL_copy.mid')