def test_g(self):
for x in range(10):
# create midi object
mid = MidiFile()
track = MidiTrack(instrument=Piano.ElectricPiano1)
mid.tracks.append(track)
# get random tab and append to midi track
tab = generator.get_random_tab(tempo=70)
filename = "%s" % str(x)
track.append(tab)
# save files
mid.save(join(self.mid_path, filename + ".mid"))
array = tab.to_array()
np.save(join(self.npy_path, filename + ".npy"), array)
output.midi2wav(join(self.mid_path, filename + ".mid"),
join(self.wav_path, filename + ".wav"))
json = tab.to_json()
output.json(join(self.json_path, filename + ".json"), json)
def test_get_events_from_roll(self):
# plt.imshow(self.test_roll[3, :, :], origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
# plt.close()
l2 = self.mid.get_events_from_roll(self.test_roll)
mid2 = MidiFile()
mid2.tracks.extend(l2)
l3 = mid2.get_roll()
def test_bar(self):
mid = MidiFile()
track = MidiTrack()
mid.tracks.append(track)
# append bar to track
track.append(bar)
track.append(bar2)
def test__get_events_from_roll(self):
# plt.imshow(self.test_roll[3, :, :], origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
track = self.mid._get_events_from_roll(self.test_roll[3, :, :], 3)
mid2 = MidiFile()
mid2.tracks.append(track)
roll = mid2.get_roll(down_sample_rate=1)[3, :, :]
# plt.imshow(roll, origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
diff = ((roll > 0) * 1 -
(self.test_roll[3, :, :roll.shape[1]] > 0) * 1)
diff2 = roll - self.test_roll[3, :, :roll.shape[1]]
ret1 = diff.sum()
if ret1 != 0:
raise ValueError
ret2 = (diff2.sum())
if ret2 != 0:
raise ValueError
from mimi import MidiFile, MidiTrack, generator
for x in range(100):
tracks = [MidiTrack(channel=x, instrument=(x + 1) * 8) for x in range(3)]
for track in tracks:
track.append_bar(generator.get_random_tab(tempo=70))
mid = MidiFile()
mid.tracks.extend(tracks)
# mid.draw_roll()
mid.save_mp3("data/mp3/%03d.mp3" % x)
mid.save_npz("data/npz/%03d.npz" % x)
# mid.play()
for x in range(1):
tracks = [
MidiTrack(channel=0, instrument=Piano.AcousticGrandPiano),
MidiTrack(channel=1, instrument=Guitar.ElectricGuitar_jazz),
MidiTrack(channel=2, instrument=Strings.Cello),
MidiTrack(channel=3, instrument=Brass.Trumpet),
MidiTrack(channel=4, instrument=Organ.ChurchOrgan),
MidiTrack(channel=5, instrument=Guitar.AcousticGuitar_steel),
MidiTrack(channel=6, instrument=SynthLead.Lead2_sawtooth),
MidiTrack(channel=7, instrument=Guitar.OverdrivenGuitar)
]
drum = MidiTrack(channel=9)
choice = np.random.choice(8, 3, replace=False)
tracks_ = [tracks[i] for i in choice]
# tracks_.append(drum)
for track in tracks_:
track.append(generator.get_random_tab(tempo=70))
mid = MidiFile()
mid.tracks.extend(tracks_)
# mid.draw_roll()
# mid.save_mp3("data/mp3/%03d.mp3" % x)
# mid.save_npz("data/npz/%03d.npz" % x)
mid.play()
print(tracks_)
from mimi import MidiFile, MidiTrack, generator
from mimi.Mimi import AbsNote
import mido
for ins in range(128):
for x in range(40, 76):
with MidiFile() as mid:
track = MidiTrack(channel=0, instrument=ins)
mid.tracks.append(track)
track.append(AbsNote(pitch=x, time=256))
mid.save_mp3("data/mp3/%03d-%03d.mp3" % (ins, x))
mid.save_npz("data/npz/%03d-%03d.npz" % (ins, x))
# mid.draw_roll()
# mid.play()
from mimi import MidiFile, MidiTrack, generator
from mimi.Mimi import AbsNote
from mimi.instrument import Piano, Strings
track = MidiTrack(channel=0, instrument=Piano.AcousticGrandPiano)
for x in range(40, 76):
track.append(AbsNote(pitch=x,time=256))
# 把track放到MidiFile物件中
mid = MidiFile()
mid.tracks.append(track)
# 對mid物件進行存檔/播放等操作
mid.save_mp3("test.mp3")
os.mkdir(mid_path)
if os.path.exists(json_path) is not True:
os.mkdir(json_path)
if os.path.exists(npy_path) is not True:
os.mkdir(npy_path)
if os.path.exists(wav_path) is not True:
os.mkdir(wav_path)
for x in range(10):
# create midi object
mid = MidiFile()
track = MidiTrack()
mid.tracks.append(track)
# get random tab and append to midi track
tab = generator.get_random_tab(tempo=70)
filename = "%s" % str(x)
track.append_bar(tab)
# save files
mid.save(join(mid_path, filename + ".mid"))
array = tab.to_array()
np.save(join(npy_path, filename + ".npy"), array)
def test_key_shift(self):
for x in range(1):
tracks = [
MidiTrack(channel=0, instrument=Piano.AcousticGrandPiano),
MidiTrack(channel=1, instrument=Guitar.ElectricGuitar_jazz),
MidiTrack(channel=2, instrument=Strings.Cello),
MidiTrack(channel=3, instrument=Brass.Trumpet),
MidiTrack(channel=4, instrument=Organ.ChurchOrgan),
MidiTrack(channel=5, instrument=Guitar.AcousticGuitar_steel),
MidiTrack(channel=6, instrument=SynthLead.Lead2_sawtooth),
MidiTrack(channel=7, instrument=Guitar.OverdrivenGuitar)
]
tracks_ = [tracks[i] for i in [1, 2, 3]]
for track in tracks_:
track.append(generator.get_random_tab(tempo=70))
combo = ["123"]
mid_ = MidiFile()
mid_.tracks.extend(tracks_)
mid_.set_tick_per_beat(50)
for indices in combo:
mid = MidiFile()
mid.set_tick_per_beat(50, resample=False)
for index in indices:
mid.tracks.append(tracks_[int(index) - 1])
# TODO : fix 1+2+3 bug
# TODO : resample bug
# TODO : only piano bug
event_nb = []
for key_shift in range(3):
mid.key_shift(1)
print(len(mid.get_events()[0]))
event_nb.append(len(mid.get_events()[0]))
if event_nb[0] != event_nb[1]:
raise ValueError
def setUp(self):
self.mid = MidiFile("../mimi/test_file/imagine_dragons-believer.mid")
self.roll = self.mid.get_roll()
self.test_roll = self.roll[:, :, 3000:6000]
class TestMidiFile(unittest.TestCase):
def setUp(self):
self.mid = MidiFile("../mimi/test_file/imagine_dragons-believer.mid")
self.roll = self.mid.get_roll()
self.test_roll = self.roll[:, :, 3000:6000]
def test__get_events_from_roll(self):
# plt.imshow(self.test_roll[3, :, :], origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
track = self.mid._get_events_from_roll(self.test_roll[3, :, :], 3)
mid2 = MidiFile()
mid2.tracks.append(track)
roll = mid2.get_roll(down_sample_rate=1)[3, :, :]
# plt.imshow(roll, origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
diff = ((roll > 0) * 1 -
(self.test_roll[3, :, :roll.shape[1]] > 0) * 1)
diff2 = roll - self.test_roll[3, :, :roll.shape[1]]
ret1 = diff.sum()
if ret1 != 0:
raise ValueError
ret2 = (diff2.sum())
if ret2 != 0:
raise ValueError
def test_get_events_from_roll(self):
# plt.imshow(self.test_roll[3, :, :], origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
# plt.close()
l2 = self.mid.get_events_from_roll(self.test_roll)
mid2 = MidiFile()
mid2.tracks.extend(l2)
l3 = mid2.get_roll()
# plt.imshow(l3[3, :, :], origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
#
# plt.close()
def test_key_shift(self):
for x in range(1):
tracks = [
MidiTrack(channel=0, instrument=Piano.AcousticGrandPiano),
MidiTrack(channel=1, instrument=Guitar.ElectricGuitar_jazz),
MidiTrack(channel=2, instrument=Strings.Cello),
MidiTrack(channel=3, instrument=Brass.Trumpet),
MidiTrack(channel=4, instrument=Organ.ChurchOrgan),
MidiTrack(channel=5, instrument=Guitar.AcousticGuitar_steel),
MidiTrack(channel=6, instrument=SynthLead.Lead2_sawtooth),
MidiTrack(channel=7, instrument=Guitar.OverdrivenGuitar)
]
tracks_ = [tracks[i] for i in [1, 2, 3]]
for track in tracks_:
track.append(generator.get_random_tab(tempo=70))
combo = ["123"]
mid_ = MidiFile()
mid_.tracks.extend(tracks_)
mid_.set_tick_per_beat(50)
for indices in combo:
mid = MidiFile()
mid.set_tick_per_beat(50, resample=False)
for index in indices:
mid.tracks.append(tracks_[int(index) - 1])
# TODO : fix 1+2+3 bug
# TODO : resample bug
# TODO : only piano bug
event_nb = []
for key_shift in range(3):
mid.key_shift(1)
print(len(mid.get_events()[0]))
event_nb.append(len(mid.get_events()[0]))
if event_nb[0] != event_nb[1]:
raise ValueError
def test_save_npz(self):
self.mid.save_npz("test.npz")
os.remove('test.npz')
def test_save_mp3(self):
mid = self.mid
directory_name = tempfile.mkdtemp()
mp3_path = os.path.join(directory_name, 'test.mp3')
mid.save_mp3(mp3_path)
# os.remove(mp3_path)
# os.removedirs(directory_name)
print(directory_name)
def test_play(self):
# set_soundfont(r"C:\Users\cswu\Desktop\mimi\mimi\soundfont\FluidR3_GM.sf2")
self.mid.play()
def test_get_roll(self):
mid = self.mid
roll = mid.get_roll()
l = roll[:, :, 3000:6000]
# plt.imshow(l[3, :, :], origin="lower", interpolation='nearest', aspect='auto')
# plt.show()
mid.draw_roll()
def tearDown(self):
del self.mid
del self.roll
del self.test_roll
return 0
* channel最多只有16個，track不限
* 你可以有複數個track放在同一個channel #但不建議
* 建議一個channel就配一個track
* 建議一個channel只配一種樂器，配兩種會有bug
#
"""
# 創造兩個track，放在不同channel，使用不同樂器
tracks = [
MidiTrack(channel=0, instrument=Piano.AcousticGrandPiano),
MidiTrack(channel=1, instrument=Strings.Cello)
]
# 對每個track生成隨機音符/和弦
for track in tracks:
track.append(generator.get_random_tab(tempo=70, key="C"))
# 把tracks放到MidiFile物件中
mid = MidiFile()
mid.tracks.extend(tracks)
# 對mid物件進行存檔/播放等操作
mid.draw_roll() # 用matplot作圖
mid.play() # 用播放器放出聲音, windows和mac預設是用timidity, ubuntu是用ffplay
# roll = mid.get_roll() # np.array of pinao roll in 16 channel in shape [channel, pitch, time]
# mid.save_npz("test.npz") # npz中有兩個array, instrument是標記每個channel用啥樂器, 另外一個是pinao roll(draw_roll畫出來的array)
# mid.save_png("test.png") # piano roll的圖
# mid.save_mp3("test.mp3") # 這個應該不用解釋
from mimi import MidiFile
mid = MidiFile("test.mid")
mid.draw_roll()