def _note_metrics(labels, predictions):
"""A pyfunc that wraps a call to precision_recall_f1_overlap."""
est_sequence = pianoroll_to_note_sequence(
predictions,
frames_per_second=data.hparams_frames_per_second(hparams),
min_duration_ms=hparams.min_duration_ms)
ref_sequence = pianoroll_to_note_sequence(
labels,
frames_per_second=data.hparams_frames_per_second(hparams),
min_duration_ms=hparams.min_duration_ms)
est_intervals, est_pitches = sequence_to_valued_intervals(
est_sequence, hparams.min_duration_ms)
ref_intervals, ref_pitches = sequence_to_valued_intervals(
ref_sequence, hparams.min_duration_ms)
if est_intervals.size == 0 or ref_intervals.size == 0:
return 0., 0., 0.
note_precision, note_recall, note_f1, _ = precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=offset_ratio)
return note_precision, note_recall, note_f1
def _note_metrics(labels, predictions):
"""A pyfunc that wraps a call to precision_recall_f1_overlap."""
est_sequence = pianoroll_to_note_sequence(
predictions,
frames_per_second=data.hparams_frames_per_second(hparams),
min_duration_ms=hparams.min_duration_ms)
ref_sequence = pianoroll_to_note_sequence(
labels,
frames_per_second=data.hparams_frames_per_second(hparams),
min_duration_ms=hparams.min_duration_ms)
est_intervals, est_pitches = sequence_to_valued_intervals(
est_sequence, hparams.min_duration_ms)
ref_intervals, ref_pitches = sequence_to_valued_intervals(
ref_sequence, hparams.min_duration_ms)
if est_intervals.size == 0 or ref_intervals.size == 0:
return 0., 0., 0.
note_precision, note_recall, note_f1, _ = precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=offset_ratio)
return note_precision, note_recall, note_f1
def get_f1_score_notes(ref_intervals, ref_pitches, est_intervals, est_pitches):
precision, recall, f1, _ = mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None)
return precision, recall, f1
def magenta_note_eval(pred_seq,
label_seq,
onset_tolerance=0.05,
restrict_to_pitch=None):
note_density = len(pred_seq.notes) / pred_seq.total_time
est_intervals, est_pitches, est_velocities = (sequence_to_valued_intervals(
pred_seq, restrict_to_pitch=restrict_to_pitch))
ref_intervals, ref_pitches, ref_velocities = (sequence_to_valued_intervals(
label_seq, restrict_to_pitch=restrict_to_pitch))
note_precision, note_recall, note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
onset_tolerance=onset_tolerance,
offset_ratio=None))
'''
(note_with_velocity_precision, note_with_velocity_recall,
note_with_velocity_f1, _) = (
mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities,
offset_ratio=None))
'''
(note_with_offsets_precision, note_with_offsets_recall,
note_with_offsets_f1,
_) = (mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
onset_tolerance=onset_tolerance))
'''
(note_with_offsets_velocity_precision, note_with_offsets_velocity_recall,
note_with_offsets_velocity_f1, _) = (
mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities))
'''
return (note_precision, note_recall, note_f1, note_with_offsets_precision,
note_with_offsets_recall, note_with_offsets_f1)
def plot_piano_roll(pm, start_pitch, end_pitch, fs=100):
# Use librosa's specshow function for displaying the piano roll
piano_roll = pm.get_piano_roll(fs)
#print(piano_roll)
plt.figure(figsize=(8, 4))
ld.specshow(piano_roll[start_pitch:end_pitch],
hop_length=1,
sr=fs,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(start_pitch),
fmax=pretty_midi.note_number_to_hz(end_pitch))
plt.colorbar()
plt.title('Piano roll viz (notes)')
plt.show()
def ex3():
global sample_rate, sd
midi_data = pretty_midi.PrettyMIDI("01-Recorded MIDI MIDI 001.mid") ## black sabbath - i
# midi_data = pretty_midi.PrettyMIDI("16752.mid") ## beethoven moonlight sonata - kinda long
midi_list = []
## parsare luata din primul exemplu de aici
## https://www.audiolabs-erlangen.de/resources/MIR/FMP/C1/C1S2_MIDI.html
for instrument in midi_data.instruments:
for note in instrument.notes:
start = note.start
end = note.end
pitch = note.pitch
velocity = note.velocity
midi_list.append([start, end-start, pitch, velocity])
time_frame = midi_data.get_end_time() ## in seconds
samples = np.empty(shape=(int(time_frame * sample_rate),), dtype=np.float64)
for tone in midi_list:
x, _ = sine(pretty_midi.note_number_to_hz(tone[2]), 0, 5e3 * (tone[3] / 127), tone[0], tone[1])
start_time = int(tone[0] * sample_rate)
samples[start_time:(start_time+len(x))] = samples[start_time:(start_time+len(x))] + window(x)
sd.default.samplerate = sample_rate
wav_wave = np.array(samples, dtype=np.int16)
sd.play(wav_wave, blocking=True)
sd.stop()
def create_piano_roll(noteList, instrument, min_note_length):
inst = pm.Instrument(0, is_drum=False, name=instrument)
start = 0
notelength = min_note_length
for i in range(len(noteList)):
if noteList[i] == 128:
start += notelength
else:
inst.notes.append(pm.Note(100, noteList[i], start, start+notelength))
start += notelength
if len(inst.notes) != 0:
librosa.display.specshow(inst.get_piano_roll(100)[40:89], hop_length=1, sr=500, x_axis='time',
y_axis='cqt_note', fmin=pm.note_number_to_hz(40), fmax=pm.note_number_to_hz(88))
else:
print('No instrument detected')
return inst
def assign_notes(self, id, note, on_or_off):
note_0_ind = 2 * id
note_1_ind = (2 * id) + 1
note_0 = self.voice_notes[note_0_ind]
note_1 = self.voice_notes[note_1_ind]
if on_or_off: # On
if note_0 and note_1:
if note_0 != note_1:
return # If two different notes are held, throw out
else:
if note > note_0:
self.voice_notes[note_1_ind] = note
else:
self.voice_notes[note_0_ind] = note
else:
self.voice_notes[note_0_ind] = note
self.voice_notes[note_1_ind] = note
else: # Off
if note_0 == note and note_1 == note:
self.voice_notes[note_0_ind] = None
self.voice_notes[note_1_ind] = None
elif note_0 == note:
self.voice_notes[note_0_ind] = note_1
elif note_1 == note:
self.voice_notes[note_1_ind] = note_0
for i, note in enumerate(self.voice_notes):
if note:
self.synths[i].freq = note_number_to_hz(note)
self.synths[i].play()
else:
self.synths[i].stop()
def plot_piano_roll(pm, start_pitch, end_pitch, fs=100):
librosa.display.specshow(pm.get_piano_roll(fs)[start_pitch:end_pitch],
hop_length=1,
sr=fs,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(start_pitch))
def plot_piano_roll(pm, start_pitch, end_pitch, fs=fs):
# Use librosa's specshow function for displaying the piano roll
librosa.display.specshow(pm.get_piano_roll(fs)[start_pitch:end_pitch],
hop_length=1,
sr=fs,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(start_pitch))
def save_roll(x, step):
fig = plt.figure(figsize=(72, 24))
librosa.display.specshow(x,
x_axis='time',
hop_length=1,
sr=96,
fmin=pm.note_number_to_hz(12))
plt.title('{}'.format(step))
fig.savefig('Samples/{}.png'.format(step))
plt.close(fig)
def plot_piano_roll(pm, start_pitch=0, end_pitch=127, fs=50):
# Use librosa's specshow function for displaying the piano roll
librosa.display.specshow(pm[start_pitch:end_pitch],
hop_length=1,
sr=fs,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(start_pitch))
plt.figure(figsize=(8, 4))
plt.show()
def plot_piano_roll(pm, start_pitch=0, end_pitch=127, fs=120):
# Use librosa's specshow function for displaying the piano roll
return librosa.display.specshow(
pm.get_piano_roll(fs)[start_pitch:end_pitch],
hop_length=1,
sr=fs,
x_axis="time",
y_axis="cqt_note",
fmin=pretty_midi.note_number_to_hz(start_pitch),
)
def load_midi(midi_path):
#read MIDI notes
note, dur, pitch = [], [], []
midi_data = pretty_midi.PrettyMIDI(midi_path)
for instrument in midi_data.instruments:
for n in instrument.notes:
# note.velocity
note.append(pretty_midi.note_number_to_hz(n.pitch))
dur.append(int((n.end - n.start) * 220))
pitch.append(n.pitch)
return note, dur, pitch
def assign_notes_to_voices(self):
for i in range(len(self.current_notes)):
singer_id = i + 1
if singer_id in self.id_note_map.keys():
if self.id_note_map[singer_id] != self.current_notes[i]:
self.id_note_map[singer_id] = None
self.synths[singer_id - 1].stop()
self.id_note_map[singer_id] = self.current_notes[i]
self.synths[singer_id - 1].freq = note_number_to_hz(
self.id_note_map[singer_id])
self.synths[singer_id - 1].play()
for singer_id in range(len(self.current_notes) + 1, 5):
if singer_id in self.id_note_map.keys():
self.id_note_map[singer_id] = None
self.synths[singer_id - 1].stop()
def generate_piano_roll(score, title, path, start_pitch, end_pitch, width,
height, fs):
"""Save a piano roll image."""
plt.figure()
plt.figure(figsize=(width, height))
plt.title(title)
librosa.display.specshow(score.get_piano_roll(fs)[start_pitch:end_pitch],
hop_length=1,
sr=fs,
x_axis='time',
y_axis='cqt_note',
fmin=midi.note_number_to_hz(start_pitch))
plt.tight_layout()
plt.savefig(path)
def get_df_mid(midi_data):
midi_list = []
"""Temporary change where you choose the lowest value """
tempo = midi_data.estimate_tempi()
pos = tempo[0]
cal = tempo[1]
tempo = pos[cal.argmin()]
for instrument in midi_data.instruments:
for note in instrument.notes:
start = note.start
end = note.end
midi = note.pitch
pitch = pretty_midi.note_number_to_hz(midi)
duration = pretty_midi.Note.get_duration(note)
midi_list.append([start, end, duration, midi, pitch, tempo])
mid_df = pd.DataFrame(
midi_list,
columns=['start', 'end', 'duration', 'midi', 'pitch', 'tempo'])
return mid_df
def get_piano_roll_matrix(midi_data,
start_pitch,
end_pitch,
fs=50,
draw=False):
# roll = midi_data.get_piano_roll(fs)[start_pitch:end_pitch]
matrix = midi_data.get_piano_roll(fs)[:, :10000]
# print(matrix[:, 30:40])
# print(matrix.shape)
if draw:
librosa.display.specshow(
matrix,
hop_length=1,
sr=fs,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(start_pitch))
return np.array(matrix).flatten()
def convert_midi_to_events(midi_path: str, settings: Dict[str,
Any]) -> List[Event]:
"""
Collect sound events (loosely speaking, played notes) from a MIDI file.
:param midi_path:
path to source MIDI file
:param settings:
global settings for the output track
:return:
sound events
"""
midi_settings = settings['midi']
if 'track_name_to_instrument' in midi_settings:
instruments_mapping = midi_settings['track_name_to_instrument']
effects_mapping = midi_settings.get('track_name_to_effects', {})
key_fn = lambda instrument: instrument.name
elif 'program_to_instrument' in midi_settings:
instruments_mapping = midi_settings['program_to_instrument']
effects_mapping = midi_settings.get('program_to_effects', {})
key_fn = lambda instrument: instrument.program
else:
raise RuntimeError("MIDI config file lacks required sections.")
midi_data = pretty_midi.PrettyMIDI(midi_path)
events = []
for pretty_midi_instrument in midi_data.instruments:
key = key_fn(pretty_midi_instrument)
sinethesizer_instrument = instruments_mapping.get(key)
if sinethesizer_instrument is None:
continue
for note in pretty_midi_instrument.notes:
event = Event(instrument=sinethesizer_instrument,
start_time=note.start,
duration=note.end - note.start,
frequency=pretty_midi.note_number_to_hz(note.pitch),
velocity=note.velocity / MAX_MIDI_VALUE,
effects=effects_mapping.get(key, ''),
frame_rate=settings['frame_rate'])
events.append(event)
return events
def numpy_to_midi(sample_roll, display=False, interpolation=False):
music = pretty_midi.PrettyMIDI()
piano_program = pretty_midi.instrument_name_to_program(
'Acoustic Grand Piano')
piano = pretty_midi.Instrument(program=piano_program)
t = 0
for i in sample_roll:
if 'torch' in str(type(i)):
pitch = int(i.max(0)[1])
else:
pitch = int(np.argmax(i))
if pitch < 128:
note = pretty_midi.Note(velocity=100,
pitch=pitch,
start=t,
end=t + 1 / 16)
t += 1 / 16
piano.notes.append(note)
elif pitch == 128:
if len(piano.notes) > 0:
note = piano.notes.pop()
else:
p = np.random.randint(60, 72)
note = pretty_midi.Note(velocity=100,
pitch=int(p),
start=0,
end=t)
note = pretty_midi.Note(velocity=100,
pitch=note.pitch,
start=note.start,
end=note.end + 1 / 16)
piano.notes.append(note)
t += 1 / 16
elif pitch == 129:
t += 1 / 16
music.instruments.append(piano)
if display:
plt.figure(figsize=(30, 10))
start, end = bound(m=music.get_piano_roll(100))
ax = plt.gca()
ax.tick_params(axis='both', which='major', labelsize=44)
# ax.tick_params(axis = 'both', which = 'minor', labelsize = 20)
if interpolation:
shape = music.get_piano_roll(100)[start + 1:end - 1].shape
if shape[1] == 9600:
plt.axvspan(0, 16, facecolor="#6600cc", alpha=0.5)
plt.axvspan(16, 32, facecolor="#8510b3", alpha=0.5)
plt.axvspan(32, 48, facecolor="#a3209a", alpha=0.5)
plt.axvspan(48, 64, facecolor="#c23082", alpha=0.5)
plt.axvspan(64, 80, facecolor="#e04069", alpha=0.5)
plt.axvspan(80, 96, facecolor="#ff5050", alpha=0.5)
else:
plt.axvspan(0, 2, facecolor="#6600cc", alpha=0.5)
plt.axvspan(2, 4, facecolor="#8510b3", alpha=0.5)
plt.axvspan(4, 6, facecolor="#a3209a", alpha=0.5)
plt.axvspan(6, 8, facecolor="#c23082", alpha=0.5)
plt.axvspan(8, 10, facecolor="#e04069", alpha=0.5)
plt.axvspan(10, 12, facecolor="#ff5050", alpha=0.5)
cmap = matplotlib.colors.ListedColormap(['white', "black"])
librosa.display.specshow(music.get_piano_roll(100)[start:end],
hop_length=1,
sr=100,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(48),
cmap=cmap,
shading='flat')
else:
librosa.display.specshow(music.get_piano_roll(100)[start:end],
hop_length=1,
sr=100,
x_axis='time',
y_axis='cqt_note',
fmin=pretty_midi.note_number_to_hz(48),
cmap="inferno",
shading='flat')
plt.xlabel('time(s)', fontsize=48)
plt.ylabel('pitch', fontsize=48)
ax.minorticks_off()
plt.show()
return music.synthesize(wave=scipy.signal.square)
def get_hz(self):
return round(pretty_midi.note_number_to_hz(self.note_number),
settings.initial_octave)
def plot_onsets(x,
fs,
hop,
c,
thresh,
onset_times,
file_name,
midi_onsets,
f_est,
tolerance=0.02):
# --
# awesome plot
# time vector
t = np.arange(0, len(x) / fs, 1 / fs)
# frame vector
time_frames = (np.arange(0, len(x) - hop, hop) + hop / 2) / fs
# plot
plt.figure(3, figsize=(8, 4))
plt.plot(t, x / max(x), label='audiofile', linewidth=1)
plt.plot(time_frames, c / max(c), label='complex domain', linewidth=1)
plt.plot(time_frames,
thresh / max(c),
label='adaptive threshold',
linewidth=1)
# annotations midi labels
for i, mid in enumerate(midi_onsets):
# draw vertical lines
if i == 0:
# put label to legend
plt.axvline(x=mid[3],
dashes=(2, 2),
color='k',
label="midi-labels")
#plt.text(x=mid[3], y=0.9, s=note_number_to_name(mid[1]), color='k', fontweight='semibold')
plt.text(x=mid[3],
y=0.9,
s=round(note_number_to_hz(mid[1]), 1),
color='k',
fontweight='semibold')
else:
plt.axvline(x=float(mid[3]), dashes=(2, 2), color='k')
#plt.text(x=mid[3], y=0.9, s=note_number_to_name(mid[1]), color='k', fontweight='semibold')
plt.text(x=mid[3],
y=0.9,
s=round(note_number_to_hz(mid[1]), 1),
color='k',
fontweight='semibold')
# tolerance band of each label
neg_label_tolerance = midi_onsets[:, 3] - tolerance
pos_label_tolerance = midi_onsets[:, 3] + tolerance
green_label = False
red_label = False
# annotations targets
for i, a in enumerate(onset_times):
# decide if correct or not -> color
is_tp = np.sum(
np.logical_and(neg_label_tolerance < a, pos_label_tolerance > a))
# draw vertical lines
if is_tp == 1:
if green_label == False:
# put label
green_label = True
plt.axvline(x=float(a),
dashes=(5, 1),
color='g',
label="targets TP")
plt.text(x=float(a),
y=1,
s=f_est[i],
color='g',
fontweight='semibold')
else:
plt.axvline(x=float(a), dashes=(5, 1), color='g')
plt.text(x=float(a),
y=1,
s=f_est[i],
color='g',
fontweight='semibold')
else:
if red_label == False:
# put label
red_label = True
plt.axvline(x=float(a),
dashes=(5, 1),
color='r',
label="targets FP")
plt.text(x=float(a),
y=0.8,
s=f_est[i],
color='r',
fontweight='semibold')
else:
plt.axvline(x=float(a), dashes=(5, 1), color='r')
plt.text(x=float(a),
y=0.8,
s=f_est[i],
color='r',
fontweight='semibold')
plt.title(file_name)
plt.ylabel('magnitude')
plt.xlabel('time [s]')
plt.grid()
plt.legend(prop={'size': 7})
#plt.savefig('class' + str(r) + '.png', dpi=150)
plt.show()
def addSweep(extension):
# Load configuration
if os.path.exists('results/sweep_data.npz'):
tmp = np.load('results/sweep_data.npz')
current_extension = tmp['arr_0']
else:
current_extension = []
if extension in current_extension:
print("< Extension already in archive")
else:
config = load_configurations(extension)
assert(extension==config['extension'])
config['temporal_bias'] = 0
config['augmentation_factor'] = 7
ensembling_factor = 0.25
suppression_field = 9
# Load out-of-sample data
print('>> Load Dataset...')
test_files = np.load('models/' + config['extension'] + '_test_files.npy')
x_out_raw, _, y_out_raw, stretch_factor_out, file_list_out_raw = generateSplitDataset(test_files, config, infer=True, labelNoise=False)
print("---", len(test_files), "---")
print("---", config['extension'], "---")
import os
os.environ["CUDA_VISIBLE_DEVICES"] = ""
new_results = np.zeros([3,3])
with tf.Session() as sess:
# Restore model
softModel = SoftNetwork(config)
softModel.restore(sess)
for selection_channel in range(0,3):
x_out = np.copy(x_out_raw)
y_out = np.copy(y_out_raw)
file_list_out = np.copy(file_list_out_raw)
# Select channel
idx_channel = [0, 1, 2]
idx_channel.remove(selection_channel)
y_out[:, idx_channel, :] = 0
# Single extract score
pp = softModel.predict(sess, x_out)
pp[:, idx_channel, :] = 0
_, _ = lp.localizationPlot(pp, y_out, n_samples=20, dist_threshold=config['tolerence'], factor=1,
bias=config['temporal_bias'], decimals=7)
plt.close()
# Ensembling score
pp_trans = np.transpose(pp.reshape([pp.shape[0] // config['augmentation_factor'], config['augmentation_factor'], pp.shape[1], pp.shape[2]]), [1, 0, 2, 3])
pp_ensemble = softModel.FastEnsembling(pp_trans, stretch_factor_out, ensembling_factor, suppression_field)
plt.figure()
_, _ = lp.localizationPlot(pp_ensemble, y_out[::config['augmentation_factor'], :, :], n_samples=10, dist_threshold=config['tolerence'],
factor=1, bias=config['temporal_bias'], decimals=7)
plt.close()
_start_extract = 16
y_ensemble = y_out[::config['augmentation_factor'], :, :]
file_list_out = file_list_out[::config['augmentation_factor']]
y_pasted = np.zeros([len(test_files), pp_ensemble.shape[1], 30000])
pp_pasted = np.zeros([len(test_files), pp_ensemble.shape[1], 30000])
ww = np.zeros([len(test_files), pp_ensemble.shape[1], 30000])
file_out_unique = []
previous_source = ""
idx_source = -1
for ii in range(len(file_list_out)):
if file_list_out[ii] == previous_source:
idx_start += int(config['split_step'] * 200)
else:
idx_start = 0
idx_source += 1
previous_source = file_list_out[ii]
file_out_unique.append(previous_source)
y_pasted[idx_source, :, idx_start:idx_start + y_ensemble[ii, :, _start_extract:].shape[1]] += y_ensemble[ii, :, _start_extract:]
pp_pasted[idx_source, :, idx_start:idx_start + pp_ensemble[ii, :, _start_extract:].shape[1]] += pp_ensemble[ii, :, _start_extract:]
ww[idx_source, :, idx_start:idx_start + pp_ensemble[ii, :, _start_extract:int(config['split_length'] * 200)+_start_extract].shape[1]] += 1
# Normalize
pp_final = pp_pasted[:, :, np.sum(ww, axis=(0, 1)) > 0] / ww[:, :, np.sum(ww, axis=(0, 1)) > 0]
y_final = y_pasted[:, :, np.sum(ww, axis=(0, 1)) > 0] > 0
# Load labels from file
yy = np.zeros([pp_final.shape[0], pp_final.shape[1], pp_final.shape[2]])
yy_list = []
for jj in range(yy.shape[0]):
label_raw = np.array(parseXML(file_out_unique[jj].replace('audio', 'annotation_xml').replace('wav', 'xml')))
for kk in range(label_raw.shape[0]):
yy[jj, int(label_raw[kk, 1]), int(label_raw[kk, 0] * 200)] += 1
yy_list.append(label_raw[np.logical_not([x in idx_channel for x in label_raw[:,1]]),:])
yy[:, idx_channel, :] = 0
# Check alignment
plt.figure()
plt.plot(yy[0, 0, :] - y_final[0, 0, :])
plt.close('all')
# Final prediction cleaning
pp_final = pp_pasted[:, :, np.sum(ww, axis=(0, 1)) > 0] / ww[:, :, np.sum(ww, axis=(0, 1)) > 0]
pp_final_cleaning = np.zeros([pp_final.shape[0], pp_final.shape[1], pp_final.shape[2]])
for ii in range(pp_final_cleaning.shape[0]):
for jj in range(pp_final_cleaning.shape[1]):
for tt in range(pp_final_cleaning.shape[2]):
if pp_final[ii, jj, tt] > 0:
if np.sum(pp_final[ii, jj, tt:tt + suppression_field]) >= 0.50:
pp_final_cleaning[ii, jj, tt] = 1
pp_final[ii, jj, tt:tt + suppression_field] = 0
# Final score computation
plt.figure()
fig, _ = lp.localizationPlot(pp_final_cleaning[:, :, :], yy[:, :, :], n_samples=pp_final_cleaning.shape[0],
dist_threshold=config['tolerence'],
factor=1, bias=config['temporal_bias'], decimals=7)
plt.close()
pp_list = []
for ii in range(pp_final.shape[0]):
triggers = np.zeros([0,2])
for jj in range(pp_final.shape[1]):
list_hits = np.where(pp_final_cleaning[ii,jj])[0]/200
triggers = np.concatenate([triggers, np.concatenate([list_hits[:,np.newaxis],np.array([jj]*len(list_hits))[:,np.newaxis]],axis=1)])
pp_list.append(triggers)
fig, _ = lp.localizationPlotList(pp_list, yy_list, decimals=7, bias= 0.000, n_samples = 20, dist_threshold=0.050)
plt.savefig('plt/inference/' + config['extension']+ "_" + str(selection_channel))
plt.close()
f1_list = []
pre_list = []
rec_list = []
for kk in range(0,len(yy_list)):
pre, rec, f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
np.concatenate([np.array([max(x,0) for x in yy_list[kk][:, 0]])[:,np.newaxis], yy_list[kk][:, 0:1] + 1], axis=1),
pretty_midi.note_number_to_hz(yy_list[kk][:, 1]),
np.concatenate([np.array([max(x,0) for x in pp_list[kk][:, 0]])[:,np.newaxis], pp_list[kk][:, 0:1] + 1], axis=1),
pretty_midi.note_number_to_hz(pp_list[kk][:, 1]),
offset_ratio=None))
f1_list.append(f1)
pre_list.append(pre)
rec_list.append(rec)
print(np.mean(f1_list), np.mean(pre_list), np.mean(rec_list))
new_results[selection_channel,:] = np.array([np.mean(f1_list), np.mean(pre_list), np.mean(rec_list)])
print("---", config['extension'], "---", selection_channel, "---")
softModel.reset()
# Reload in case other update occurred in the mean-time
if os.path.exists('results/sweep_data.npz'):
tmp = np.load('results/sweep_data.npz')
current_extension = tmp['arr_0']
current_results = tmp['arr_1']
current = current_extension.tolist()
current.append(extension)
np.savez('results/sweep_data.npz', current, np.concatenate([current_results,new_results[np.newaxis, :, :]],axis=0))
else:
np.savez('results/sweep_data.npz', current_extension.tolist(), new_results[np.newaxis, :, :])
# create updated image
import sweepVisualization
def score_sequence(session, global_step_increment, summary_op, summary_writer,
metrics_to_updates, metric_note_precision,
metric_note_recall, metric_note_f1,
metric_note_precision_with_offsets,
metric_note_recall_with_offsets,
metric_note_f1_with_offsets, metric_frame_labels,
metric_frame_predictions, frame_labels, sequence_prediction,
frames_per_second, note_sequence_str_label, min_duration_ms,
sequence_id):
"""Calculate metrics on the inferred sequence."""
est_intervals, est_pitches = sequence_to_valued_intervals(
sequence_prediction, min_duration_ms=min_duration_ms)
sequence_label = music_pb2.NoteSequence.FromString(note_sequence_str_label)
ref_intervals, ref_pitches = sequence_to_valued_intervals(
sequence_label, min_duration_ms=min_duration_ms)
sequence_note_precision, sequence_note_recall, sequence_note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None))
(sequence_note_precision_with_offsets, sequence_note_recall_with_offsets,
sequence_note_f1_with_offsets,
_) = (mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals, pretty_midi.note_number_to_hz(ref_pitches),
est_intervals, pretty_midi.note_number_to_hz(est_pitches)))
frame_predictions = sequences_lib.sequence_to_pianoroll(
sequence_prediction,
frames_per_second=frames_per_second,
min_pitch=constants.MIN_MIDI_PITCH,
max_pitch=constants.MAX_MIDI_PITCH).active
if frame_predictions.shape[0] < frame_labels.shape[0]:
# Pad transcribed frames with silence.
pad_length = frame_labels.shape[0] - frame_predictions.shape[0]
frame_predictions = np.pad(frame_predictions, [(0, pad_length),
(0, 0)], 'constant')
elif frame_predictions.shape[0] > frame_labels.shape[0]:
# Truncate transcribed frames.
frame_predictions = frame_predictions[:frame_labels.shape[0], :]
global_step, _ = session.run(
[global_step_increment, metrics_to_updates], {
metric_frame_predictions: frame_predictions,
metric_frame_labels: frame_labels,
metric_note_precision: sequence_note_precision,
metric_note_recall: sequence_note_recall,
metric_note_f1: sequence_note_f1,
metric_note_precision_with_offsets:
sequence_note_precision_with_offsets,
metric_note_recall_with_offsets: sequence_note_recall_with_offsets,
metric_note_f1_with_offsets: sequence_note_f1_with_offsets
})
# Running the summary op separately ensures that all of the metrics have been
# updated before we try to query them.
summary = session.run(summary_op)
tf.logging.info('Writing score summary for %s: Step= %d, Note F1=%f',
sequence_id, global_step, sequence_note_f1)
summary_writer.add_summary(summary, global_step)
summary_writer.flush()
return sequence_label
def score_sequence(session, global_step_increment, metrics_to_updates,
metric_note_precision, metric_note_recall, metric_note_f1,
metric_note_precision_with_offsets,
metric_note_recall_with_offsets,
metric_note_f1_with_offsets,
metric_note_precision_with_offsets_velocity,
metric_note_recall_with_offsets_velocity,
metric_note_f1_with_offsets_velocity, metric_frame_labels,
metric_frame_predictions, frame_labels, sequence_prediction,
frames_per_second, sequence_label, sequence_id):
"""Calculate metrics on the inferred sequence."""
est_intervals, est_pitches, est_velocities = sequence_to_valued_intervals(
sequence_prediction)
ref_intervals, ref_pitches, ref_velocities = sequence_to_valued_intervals(
sequence_label)
sequence_note_precision, sequence_note_recall, sequence_note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None))
(sequence_note_precision_with_offsets, sequence_note_recall_with_offsets,
sequence_note_f1_with_offsets,
_) = (mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals, pretty_midi.note_number_to_hz(ref_pitches),
est_intervals, pretty_midi.note_number_to_hz(est_pitches)))
(sequence_note_precision_with_offsets_velocity,
sequence_note_recall_with_offsets_velocity,
sequence_note_f1_with_offsets_velocity,
_) = (mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities))
frame_predictions = sequences_lib.sequence_to_pianoroll(
sequence_prediction,
frames_per_second=frames_per_second,
min_pitch=constants.MIN_MIDI_PITCH,
max_pitch=constants.MAX_MIDI_PITCH).active
if frame_predictions.shape[0] < frame_labels.shape[0]:
# Pad transcribed frames with silence.
pad_length = frame_labels.shape[0] - frame_predictions.shape[0]
frame_predictions = np.pad(frame_predictions, [(0, pad_length),
(0, 0)], 'constant')
elif frame_predictions.shape[0] > frame_labels.shape[0]:
# Truncate transcribed frames.
frame_predictions = frame_predictions[:frame_labels.shape[0], :]
global_step, _ = session.run(
[global_step_increment, metrics_to_updates], {
metric_frame_predictions:
frame_predictions,
metric_frame_labels:
frame_labels,
metric_note_precision:
sequence_note_precision,
metric_note_recall:
sequence_note_recall,
metric_note_f1:
sequence_note_f1,
metric_note_precision_with_offsets:
sequence_note_precision_with_offsets,
metric_note_recall_with_offsets:
sequence_note_recall_with_offsets,
metric_note_f1_with_offsets:
sequence_note_f1_with_offsets,
metric_note_precision_with_offsets_velocity:
sequence_note_precision_with_offsets_velocity,
metric_note_recall_with_offsets_velocity:
sequence_note_recall_with_offsets_velocity,
metric_note_f1_with_offsets_velocity:
sequence_note_f1_with_offsets_velocity,
})
tf.logging.info('Updating scores for %s: Step= %d, Note F1=%f',
sequence_id, global_step, sequence_note_f1)
def _calculate_metrics_py(frame_probs,
onset_probs,
frame_predictions,
onset_predictions,
offset_predictions,
velocity_values,
sequence_label_str,
frame_labels,
sequence_id,
hparams,
min_pitch,
max_pitch,
onsets_only,
restrict_to_pitch=None):
"""Python logic for calculating metrics on a single example."""
tf.logging.info('Calculating metrics for %s with length %d', sequence_id,
frame_labels.shape[0])
sequence_prediction = infer_util.predict_sequence(
frame_probs=frame_probs,
onset_probs=onset_probs,
frame_predictions=frame_predictions,
onset_predictions=onset_predictions,
offset_predictions=offset_predictions,
velocity_values=velocity_values,
min_pitch=min_pitch,
hparams=hparams,
onsets_only=onsets_only)
sequence_label = music_pb2.NoteSequence.FromString(sequence_label_str)
if hparams.backward_shift_amount_ms:
def shift_notesequence(ns_time):
return ns_time + hparams.backward_shift_amount_ms / 1000.
shifted_sequence_label, skipped_notes = (
sequences_lib.adjust_notesequence_times(sequence_label,
shift_notesequence))
assert skipped_notes == 0
sequence_label = shifted_sequence_label
est_intervals, est_pitches, est_velocities = (
sequence_to_valued_intervals(
sequence_prediction, restrict_to_pitch=restrict_to_pitch))
ref_intervals, ref_pitches, ref_velocities = (
sequence_to_valued_intervals(
sequence_label, restrict_to_pitch=restrict_to_pitch))
processed_frame_predictions = sequences_lib.sequence_to_pianoroll(
sequence_prediction,
frames_per_second=data.hparams_frames_per_second(hparams),
min_pitch=min_pitch,
max_pitch=max_pitch).active
if processed_frame_predictions.shape[0] < frame_labels.shape[0]:
# Pad transcribed frames with silence.
pad_length = frame_labels.shape[0] - processed_frame_predictions.shape[0]
processed_frame_predictions = np.pad(processed_frame_predictions,
[(0, pad_length), (0, 0)], 'constant')
elif processed_frame_predictions.shape[0] > frame_labels.shape[0]:
# Truncate transcribed frames.
processed_frame_predictions = (
processed_frame_predictions[:frame_labels.shape[0], :])
if len(ref_pitches) == 0:
tf.logging.info(
'Reference pitches were length 0, returning empty metrics for %s:',
sequence_id)
return tuple([[]] * 12 + [processed_frame_predictions])
note_precision, note_recall, note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None))
(note_with_velocity_precision, note_with_velocity_recall,
note_with_velocity_f1, _) = (
mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities,
offset_ratio=None))
(note_with_offsets_precision, note_with_offsets_recall, note_with_offsets_f1,
_) = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals, pretty_midi.note_number_to_hz(ref_pitches),
est_intervals, pretty_midi.note_number_to_hz(est_pitches)))
(note_with_offsets_velocity_precision, note_with_offsets_velocity_recall,
note_with_offsets_velocity_f1, _) = (
mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities))
tf.logging.info(
'Metrics for %s: Note F1 %f, Note w/ velocity F1 %f, Note w/ offsets F1 %f, '
'Note w/ offsets & velocity: %f', sequence_id, note_f1,
note_with_velocity_f1, note_with_offsets_f1,
note_with_offsets_velocity_f1)
# Return 1-d tensors for the metrics
return ([note_precision], [note_recall], [note_f1],
[note_with_velocity_precision], [note_with_velocity_recall],
[note_with_velocity_f1], [note_with_offsets_precision],
[note_with_offsets_recall], [note_with_offsets_f1
], [note_with_offsets_velocity_precision],
[note_with_offsets_velocity_recall], [note_with_offsets_velocity_f1
], [processed_frame_predictions])
bias=-0.025,
n_samples=1)
plt.savefig('infer/images/' + version + "_" +
infer_files[0].split("/")[-1].replace('.wav', '.png'))
plt.close('all')
np.save(
'infer/' + version + "_" +
infer_files[0].split("/")[-1].replace('.wav', '.npy'),
prediction_list)
# Final MIR Score
prediction_list[:, 0] += 0.025
pre, rec, f1, _ = (mir_eval.transcription.precision_recall_f1_overlap(
np.concatenate([label_raw[:, 0:1], label_raw[:, 0:1] + 1], axis=1),
pretty_midi.note_number_to_hz(label_raw[:, 1]),
np.concatenate(
[prediction_list[:, 0:1] - 0.030, prediction_list[:, 0:1] + 1],
axis=1),
pretty_midi.note_number_to_hz(prediction_list[:, 1]),
offset_ratio=None))
f1_list.append(f1)
pre_list.append(pre)
rec_list.append(rec)
print(f1, pre, rec)
print(np.mean(f1_list), np.mean(pre_list), np.mean(rec_list), idx_file)
print('---------------------------')
else:
print("<<< Already exists!")
def _calculate_metrics_py(frame_predictions, onset_predictions,
offset_predictions, velocity_values,
sequence_label_str, frame_labels, sequence_id,
hparams):
"""Python logic for calculating metrics on a single example."""
tf.logging.info('Calculating metrics for %s with length %d', sequence_id,
frame_labels.shape[0])
if not hparams.predict_onset_threshold:
onset_predictions = None
if not hparams.predict_offset_threshold:
offset_predictions = None
sequence_prediction = sequences_lib.pianoroll_to_note_sequence(
frames=frame_predictions,
frames_per_second=data.hparams_frames_per_second(hparams),
min_duration_ms=0,
min_midi_pitch=constants.MIN_MIDI_PITCH,
onset_predictions=onset_predictions,
offset_predictions=offset_predictions,
velocity_values=velocity_values)
sequence_label = music_pb2.NoteSequence.FromString(sequence_label_str)
if hparams.backward_shift_amount_ms:
def shift_notesequence(ns_time):
return ns_time + hparams.backward_shift_amount_ms / 1000.
shifted_sequence_label, skipped_notes = (
sequences_lib.adjust_notesequence_times(sequence_label,
shift_notesequence))
assert skipped_notes == 0
sequence_label = shifted_sequence_label
est_intervals, est_pitches, est_velocities = (
infer_util.sequence_to_valued_intervals(sequence_prediction))
ref_intervals, ref_pitches, ref_velocities = (
infer_util.sequence_to_valued_intervals(sequence_label))
note_precision, note_recall, note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None))
(note_with_offsets_precision, note_with_offsets_recall,
note_with_offsets_f1,
_) = (mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals, pretty_midi.note_number_to_hz(ref_pitches),
est_intervals, pretty_midi.note_number_to_hz(est_pitches)))
(note_with_offsets_velocity_precision, note_with_offsets_velocity_recall,
note_with_offsets_velocity_f1,
_) = (mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities))
processed_frame_predictions = sequences_lib.sequence_to_pianoroll(
sequence_prediction,
frames_per_second=data.hparams_frames_per_second(hparams),
min_pitch=constants.MIN_MIDI_PITCH,
max_pitch=constants.MAX_MIDI_PITCH).active
if processed_frame_predictions.shape[0] < frame_labels.shape[0]:
# Pad transcribed frames with silence.
pad_length = frame_labels.shape[0] - processed_frame_predictions.shape[
0]
processed_frame_predictions = np.pad(processed_frame_predictions,
[(0, pad_length),
(0, 0)], 'constant')
elif processed_frame_predictions.shape[0] > frame_labels.shape[0]:
# Truncate transcribed frames.
processed_frame_predictions = (
processed_frame_predictions[:frame_labels.shape[0], :])
tf.logging.info(
'Metrics for %s: Note F1 %f, Note w/ offsets F1 %f, '
'Note w/ offsets & velocity: %f', sequence_id, note_f1,
note_with_offsets_f1, note_with_offsets_velocity_f1)
return (note_precision, note_recall, note_f1, note_with_offsets_precision,
note_with_offsets_recall, note_with_offsets_f1,
note_with_offsets_velocity_precision,
note_with_offsets_velocity_recall, note_with_offsets_velocity_f1,
processed_frame_predictions)
def score_sequence(session, global_step_increment, summary_op, summary_writer,
metrics_to_updates, metric_note_precision,
metric_note_recall, metric_note_f1,
metric_note_precision_with_offsets,
metric_note_recall_with_offsets,
metric_note_f1_with_offsets, metric_frame_labels,
metric_frame_predictions, frame_labels, sequence_prediction,
frames_per_second, note_sequence_str_label, min_duration_ms,
sequence_id):
"""Calculate metrics on the inferred sequence."""
est_intervals, est_pitches = sequence_to_valued_intervals(
sequence_prediction,
min_duration_ms=min_duration_ms)
sequence_label = music_pb2.NoteSequence.FromString(note_sequence_str_label)
ref_intervals, ref_pitches = sequence_to_valued_intervals(
sequence_label,
min_duration_ms=min_duration_ms)
sequence_note_precision, sequence_note_recall, sequence_note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None))
(sequence_note_precision_with_offsets,
sequence_note_recall_with_offsets,
sequence_note_f1_with_offsets, _) = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches)))
frame_predictions, _, _ = data.sequence_to_pianoroll(
sequence_prediction,
frames_per_second=frames_per_second,
min_pitch=constants.MIN_MIDI_PITCH,
max_pitch=constants.MAX_MIDI_PITCH)
if frame_predictions.shape[0] < frame_labels.shape[0]:
# Pad transcribed frames with silence.
pad_length = frame_labels.shape[0] - frame_predictions.shape[0]
frame_predictions = np.pad(
frame_predictions, [(0, pad_length), (0, 0)], 'constant')
elif frame_predictions.shape[0] > frame_labels.shape[0]:
# Truncate transcribed frames.
frame_predictions = frame_predictions[:frame_labels.shape[0], :]
global_step, _ = session.run([global_step_increment, metrics_to_updates], {
metric_frame_predictions: frame_predictions,
metric_frame_labels: frame_labels,
metric_note_precision: sequence_note_precision,
metric_note_recall: sequence_note_recall,
metric_note_f1: sequence_note_f1,
metric_note_precision_with_offsets: sequence_note_precision_with_offsets,
metric_note_recall_with_offsets: sequence_note_recall_with_offsets,
metric_note_f1_with_offsets: sequence_note_f1_with_offsets
})
# Running the summary op separately ensures that all of the metrics have been
# updated before we try to query them.
summary = session.run(summary_op)
tf.logging.info(
'Writing score summary for %s: Step= %d, Note F1=%f',
sequence_id, global_step, sequence_note_f1)
summary_writer.add_summary(summary, global_step)
summary_writer.flush()
return sequence_label
t += INCREMENT
j += 1
if diff in limits:
name = "%d-%d-chords" % (prev, diff)
piano_midi.instruments.append(
piano) # Append the piano instrument to the midi file
piano_midi.write("%s.mid" % name)
file = open("%s.txt" % name,
"w") # Text file with the chord information
first = True
for note in piano_midi.instruments[0].notes: # Going through the notes
file.write(
"%s " %
pretty_midi.note_number_to_hz(note.pitch)) # Note frequency
if not first:
file.write("%s " % note.start) # Note onset
file.write("%s\n" % note.end) # Note offset
first = True
else:
first = False
file.close()
if limits[-1] != diff:
prev = diff + 1
piano_midi = pretty_midi.PrettyMIDI()
piano = pretty_midi.Instrument(program=piano_program)
t = INITIAL
def unpack_sample(name='', concat=False):
if name == '':
pathlist = list(pathlib.Path('Samples').glob('**/*.npy'))
name = str(pathlist[-1])
if not os.path.exists(name):
os.mkdir(name)
savename = name + '/' + name.split('/')[-1]
if not '.npy' in name:
name = name + '.npy'
samples = np.load(name) > 0
program_nums = [0, 24, 40, 56, 64, 72]
is_drum = [False] * CHANNEL_NUM
if concat:
sample = np.concatenate([i for i in samples], axis=-1)
write_piano_rolls_to_midi(sample, program_nums=program_nums, is_drum=is_drum, filename=savename + '.mid')
tqdm.write(name + '.mid')
for i, piano_roll in enumerate(sample):
fig = plt.figure(figsize=(12, 4))
librosa.display.specshow(piano_roll, x_axis='time', y_axis='cqt_note', hop_length=1, sr=96, fmin=pm.note_number_to_hz(12))
plt.title(savename + '_' + pm.program_to_instrument_name(program_nums[i]))
fig.savefig(savename + '_' + str(i) + '.png')
plt.close(fig)
return
for id, sample in enumerate(samples):
write_piano_rolls_to_midi(sample, program_nums=program_nums, is_drum=is_drum, filename=savename + '_' + str(id) + '.mid')
tqdm.write(savename + '_' + str(id) + '.mid')
for i, piano_roll in enumerate(sample):
fig = plt.figure(figsize=(12, 4))
librosa.display.specshow(piano_roll, x_axis='time', y_axis='cqt_note', hop_length=1, sr=96, fmin=pm.note_number_to_hz(12))
plt.title(savename + '_' + pm.program_to_instrument_name(program_nums[i]))
fig.savefig(savename + '_' + str(id) + '_' + str(i) + '.png')
plt.close(fig)
def _calculate_metrics_py(
frame_predictions, onset_predictions, offset_predictions, velocity_values,
sequence_label_str, frame_labels, sequence_id, hparams):
"""Python logic for calculating metrics on a single example."""
tf.logging.info('Calculating metrics for %s with length %d', sequence_id,
frame_labels.shape[0])
if not hparams.predict_onset_threshold:
onset_predictions = None
if not hparams.predict_offset_threshold:
offset_predictions = None
sequence_prediction = sequences_lib.pianoroll_to_note_sequence(
frames=frame_predictions,
frames_per_second=data.hparams_frames_per_second(hparams),
min_duration_ms=0,
min_midi_pitch=constants.MIN_MIDI_PITCH,
onset_predictions=onset_predictions,
offset_predictions=offset_predictions,
velocity_values=velocity_values)
sequence_label = music_pb2.NoteSequence.FromString(sequence_label_str)
if hparams.backward_shift_amount_ms:
def shift_notesequence(ns_time):
return ns_time + hparams.backward_shift_amount_ms / 1000.
shifted_sequence_label, skipped_notes = (
sequences_lib.adjust_notesequence_times(sequence_label,
shift_notesequence))
assert skipped_notes == 0
sequence_label = shifted_sequence_label
est_intervals, est_pitches, est_velocities = (
infer_util.sequence_to_valued_intervals(sequence_prediction))
ref_intervals, ref_pitches, ref_velocities = (
infer_util.sequence_to_valued_intervals(sequence_label))
note_precision, note_recall, note_f1, _ = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals,
pretty_midi.note_number_to_hz(ref_pitches),
est_intervals,
pretty_midi.note_number_to_hz(est_pitches),
offset_ratio=None))
(note_with_offsets_precision, note_with_offsets_recall, note_with_offsets_f1,
_) = (
mir_eval.transcription.precision_recall_f1_overlap(
ref_intervals, pretty_midi.note_number_to_hz(ref_pitches),
est_intervals, pretty_midi.note_number_to_hz(est_pitches)))
(note_with_offsets_velocity_precision, note_with_offsets_velocity_recall,
note_with_offsets_velocity_f1, _) = (
mir_eval.transcription_velocity.precision_recall_f1_overlap(
ref_intervals=ref_intervals,
ref_pitches=pretty_midi.note_number_to_hz(ref_pitches),
ref_velocities=ref_velocities,
est_intervals=est_intervals,
est_pitches=pretty_midi.note_number_to_hz(est_pitches),
est_velocities=est_velocities))
processed_frame_predictions = sequences_lib.sequence_to_pianoroll(
sequence_prediction,
frames_per_second=data.hparams_frames_per_second(hparams),
min_pitch=constants.MIN_MIDI_PITCH,
max_pitch=constants.MAX_MIDI_PITCH).active
if processed_frame_predictions.shape[0] < frame_labels.shape[0]:
# Pad transcribed frames with silence.
pad_length = frame_labels.shape[0] - processed_frame_predictions.shape[0]
processed_frame_predictions = np.pad(processed_frame_predictions,
[(0, pad_length), (0, 0)], 'constant')
elif processed_frame_predictions.shape[0] > frame_labels.shape[0]:
# Truncate transcribed frames.
processed_frame_predictions = (
processed_frame_predictions[:frame_labels.shape[0], :])
tf.logging.info(
'Metrics for %s: Note F1 %f, Note w/ offsets F1 %f, '
'Note w/ offsets & velocity: %f', sequence_id, note_f1,
note_with_offsets_f1, note_with_offsets_velocity_f1)
return (note_precision, note_recall, note_f1, note_with_offsets_precision,
note_with_offsets_recall, note_with_offsets_f1,
note_with_offsets_velocity_precision,
note_with_offsets_velocity_recall, note_with_offsets_velocity_f1,
processed_frame_predictions)
