def create_cv_csv(out_path):
"""Create cross validation csv file.
"""
dataset_dir = cfg.dataset_dir
workspace = cfg.workspace
events = cfg.events
n_folds = cfg.n_folds
pp_data.create_folder(os.path.dirname(out_path))
f = open(out_path, 'w')
f.write("name\tfold\n")
names = os.listdir(dataset_dir)
for event in events:
event_names = [e for e in names if event in e]
kf = KFold(n_splits=n_folds, shuffle=False, random_state=None)
fold = 0
for (tr_idxes, te_idxes) in kf.split(event_names):
for idx in te_idxes:
event_name = event_names[idx]
f.write("%s\t%d\n" % (event_name, fold))
fold += 1
f.close()
print("Write out to %s" % n_folds)
def recognize(args):
workspace = cfg.workspace
events = cfg.events
n_events = args.n_events
snr = args.snr
md_na = args.model_name
lb_to_ix = cfg.lb_to_ix
n_out = len(cfg.events)
te_fold = cfg.te_fold
md_path = os.path.join(workspace, "models", pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr, md_na)
md = serializations.load(md_path)
# Load data.
feature_dir = os.path.join(workspace, "features", "logmel",
"n_events=%d" % n_events)
yaml_dir = os.path.join(workspace, "mixed_audio", "n_events=%d" % n_events)
(tr_x, tr_at_y, tr_sed_y, tr_na_list, te_x, te_at_y, te_sed_y,
te_na_list) = pp_data.load_data(feature_dir=feature_dir,
yaml_dir=yaml_dir,
te_fold=te_fold,
snr=snr,
is_scale=is_scale)
x = te_x
at_gts = te_at_y
sed_gts = te_sed_y
na_list = te_na_list
# Recognize.
[at_pds] = md.predict(x) # (N, 16)
observe_nodes = [md.find_layer('detect').output_]
f_forward = md.get_observe_forward_func(observe_nodes)
[seg_masks] = md.run_function(f_forward, x, batch_size=500,
tr_phase=0.) # (n_clips, n_time, n_out)
seg_masks = np.transpose(seg_masks, (0, 2, 1))[:, :, :, np.newaxis]
# Dump to pickle.
out_dir = os.path.join(workspace, "preds", pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr,
os.path.splitext(md_na)[0])
pp_data.create_folder(out_dir)
out_at_path = os.path.join(out_dir, "at_probs.p")
out_seg_masks_path = os.path.join(out_dir, "seg_masks.p")
cPickle.dump(at_pds,
open(out_at_path, 'wb'),
protocol=cPickle.HIGHEST_PROTOCOL)
cPickle.dump(seg_masks,
open(out_seg_masks_path, 'wb'),
protocol=cPickle.HIGHEST_PROTOCOL)
# Print stats.
sed_pds = np.mean(seg_masks, axis=-1) # (N, n_out, n_time)
sed_pds = np.transpose(sed_pds, (0, 2, 1)) # (N, n_time, n_out)
print_stats(at_pds, at_gts, sed_pds, sed_gts)
def no_separation(args):
"""Write out un-separated mixture as baseline.
"""
workspace = args.workspace
out_dir = os.path.join(workspace, "separated_wavs", "no_separation")
pp_data.create_folder(out_dir)
audio_dir = os.path.join(workspace, "mixed_audio", "testing")
names = os.listdir(audio_dir)
for na in names:
if '.mix_0db.wav' in na:
print(na)
audio_path = os.path.join(audio_dir, na)
(bg_audio, event_audio, fs) = pp_data.read_audio_stereo(audio_path)
mixed_audio = bg_audio + event_audio
bare_na = os.path.splitext(os.path.splitext(na)[0])[0]
pp_data.write_audio(os.path.join(out_dir, bare_na + ".sep_bg.wav"),
mixed_audio, fs)
pp_data.write_audio(
os.path.join(out_dir, bare_na + ".sep_event.wav"), mixed_audio,
fs)
print("Write out finished!")
def calculate_scalar(args):
workspace = args.workspace
stack_num = args.stack_num
hop_frames = args.hop_frames
filename = args.filename
audio_type = 'speech'
hdf5_file = os.path.join(args.workspace, "features", "cmplx_spectrogram.h5")
data_type = 'train'
batch_size = 500
data_loader = pp_data.DataLoader(hdf5_file, data_type, audio_type, stack_num, hop_frames, center_only=True, batch_size=batch_size)
x_all = []
iter = 0
max_iter = 100
for (batch_x, batch_y) in data_loader.generate():
x_all.append(batch_x)
iter += 1
if iter == max_iter:
break
x_all = np.concatenate(x_all, axis=0)
x_all = np.abs(x_all)
x_all = transform(x_all, type='numpy')
(mean_, std_) = pp_data.calculate_scalar(x_all)
out_path = os.path.join(workspace, "scalars", filename, "scalar.p")
pp_data.create_folder(os.path.dirname(out_path))
cPickle.dump((mean_, std_), open(out_path, 'wb'), protocol=cPickle.HIGHEST_PROTOCOL)
print("Scalar saved to %s" % out_path)
def train(tr_fe_fd, tr_csv_file, te_fe_fd, te_csv_file,
n_concat, hop, scaler, out_md_fd):
# Prepare data
tr_x, tr_y = pp_data.get_matrix_format_data(
fe_fd=tr_fe_fd,
csv_file=tr_csv_file,
n_concat=n_concat, hop=hop, scaler=scaler)
te_x, te_y = pp_data.get_matrix_format_data(
fe_fd=te_fe_fd,
csv_file=te_csv_file,
n_concat=n_concat, hop=hop, scaler=scaler)
n_freq = tr_x.shape[2]
print 'tr_x.shape:', tr_x.shape # (n_samples, n_concat, n_freq)
print 'tr_y.shape:', tr_y.shape # (n_samples, n_labels)
# Build model
n_out = len(cfg.labels)
seq = Sequential()
seq.add(InputLayer((n_concat, n_freq)))
seq.add(Flatten())
seq.add(Dropout(0.2))
seq.add(Dense(200, act='relu'))
seq.add(Dropout(0.2))
seq.add(Dense(200, act='relu'))
seq.add(Dropout(0.2))
seq.add(Dense(n_out, act='softmax'))
md = seq.compile()
md.summary()
# Validation.
# tr_err, te_err are frame based. To get event based err, run recognize.py
validation = Validation(tr_x=tr_x, tr_y=tr_y,
va_x=None, va_y=None,
te_x=te_x, te_y=te_y,
batch_size=500, call_freq=1, dump_path=None)
# Save model
pp_data.create_folder(out_md_fd)
save_model = SaveModel(out_md_fd, call_freq=2)
# Callbacks
callbacks = [validation, save_model]
# Optimizer
optimizer = Adam(1e-3)
# fit model
md.fit(x=tr_x, y=tr_y,
batch_size=100,
n_epochs=101,
loss_func='categorical_crossentropy',
optimizer=optimizer,
callbacks=callbacks)
def get_avg_stats(args, file_name, bgn_iter, fin_iter, interval_iter):
eval_hdf5_path = os.path.join(args.cpickle_dir, "eval.h5")
workspace = args.workspace
# Load ground truth
(te_x, te_y, te_id_list) = pp_data.load_data(eval_hdf5_path)
y = te_y
# Average prediction probabilities of several iterations
prob_dir = os.path.join(workspace, "probs", file_name, "test")
names = os.listdir(prob_dir)
probs = []
iters = range(bgn_iter, fin_iter, interval_iter)
for iter in iters:
pickle_path = os.path.join(prob_dir, "prob_%d_iters.p" % iter)
prob = cPickle.load(open(pickle_path, 'rb'))
probs.append(prob)
#print(len(probs))
avg_prob = np.mean(np.array(probs), axis=0)
# Compute stats
t1 = time.time()
n_out = y.shape[1]
stats = []
for k in range(n_out):
(precisions, recalls, thresholds) = metrics.precision_recall_curve(y[:, k], avg_prob[:, k])
avg_precision = metrics.average_precision_score(y[:, k], avg_prob[:, k], average=None)
(fpr, tpr, thresholds) = metrics.roc_curve(y[:, k], avg_prob[:, k])
auc = metrics.roc_auc_score(y[:, k], avg_prob[:, k], average=None)
#eer = pp_data.eer(avg_prob[:, k], y[:, k])
skip = 1000
dict = {'precisions': precisions[0::skip], 'recalls': recalls[0::skip], 'AP': avg_precision,
'fpr': fpr[0::skip], 'fnr': 1. - tpr[0::skip], 'auc': auc}
stats.append(dict)
logging.info("Callback time: %s" % (time.time() - t1,))
# Dump stats
dump_path = os.path.join(workspace, "stats", pp_data.get_filename(__file__), "test", "avg_%d_%d_%d.p" % (bgn_iter, fin_iter, interval_iter))
pp_data.create_folder(os.path.dirname(dump_path))
cPickle.dump(stats, open(dump_path, 'wb'), protocol=cPickle.HIGHEST_PROTOCOL)
#print(stats.shape)
#for i, e in enumerate(stats):
# logging.info("%d. mAP: %f, auc: %f, d_prime: %f" % (i, e['AP'], e['auc'], pp_data.d_prime(e['auc'])))
# Write out to log
logging.info("bgn_iter, fin_iter, interval_iter: %d, %d, %d" % (bgn_iter, fin_iter, interval_iter))
logging.info("mAP: %f" % np.mean([e['AP'] for e in stats]))
auc = np.mean([e['auc'] for e in stats])
logging.info("auc: %f" % auc)
logging.info("d_prime: %f" % pp_data.d_prime(auc))
def my_plot(pd, gt, picture_path, threshold=None):
classes = cfg.classes
ig = cfg.ig
mg = cfg.mg
estimate_path = picture_path.replace("picture", "estimate_txt")
estimate_path = estimate_path.replace("jpg", "txt")
folder, _ = os.path.split(picture_path)
if not os.path.exists(folder):
create_folder(folder)
folder, _ = os.path.split(estimate_path)
if not os.path.exists(folder):
create_folder(folder)
result = open(estimate_path, 'at')
n_cls = len(classes)
if threshold == None:
pd_ = pd.argmax(axis=-1)
for i in range(n_cls):
#'''
plt.subplot(221 + i)
plt.plot(range(240), gt[:, i], 'r')
plt.bar(left=range(240), height=pd[:, i], width=1, color='b')
plt.xlim(0, 251)
plt.ylim(0, 1.1)
#'''
if not i == 0:
if threshold == None:
class_ind = np.where(pd_ == i)[0]
pd_class = np.zeros(pd_.shape)
pd_class[class_ind] = 1
segments = pro_boundary(pd_class, 0, mg[i], ig[i])
else:
segments = pro_boundary(pd[:, i], threshold[i], mg[i], ig[i])
for j in range(len(segments)):
#'''
plt.plot([segments[j][0]] * 240,
np.arange(240) / 240.0 * 1.1, 'g')
plt.plot([segments[j][1]] * 240,
np.arange(240) / 240.0 * 1.1, 'g')
#'''
result.write(
str(segments[j][0] * cfg.step_time) + '\t' +
str(segments[j][1] * cfg.step_time) + '\t' + classes[i] +
'\n')
#'''
plt.savefig(picture_path)
#plt.show()
plt.close()
#'''
result.close()
def eval(md, x, y, out_dir, out_probs_dir, iter_):
# Predict
t1 = time.time()
(n_clips, n_time, n_freq) = x.shape
(x, y) = pp_data.transform_data(x, y)
prob = md.predict(x)
prob = prob.astype(np.float32)
if out_dir:
pp_data.create_folder(out_dir)
#out_prob_path = os.path.join(out_probs_dir, "prob_%d_iters.p" %iter_)
# Dump predicted probabilites for future average
if out_probs_dir:
pp_data.create_folder(out_probs_dir)
out_prob_path = os.path.join(out_probs_dir, "prob_%d_iters.p" % iter_)
cPickle.dump(prob,
open(out_prob_path, 'wb'),
protocol=cPickle.HIGHEST_PROTOCOL)
# Compute and dump stats
n_out = y.shape[1]
stats = []
t1 = time.time()
for k in range(n_out):
(precisions, recalls,
thresholds) = metrics.precision_recall_curve(y[:, k], prob[:, k])
avg_precision = metrics.average_precision_score(y[:, k],
prob[:, k],
average=None)
(fpr, tpr, thresholds) = metrics.roc_curve(y[:, k], prob[:, k])
auc = metrics.roc_auc_score(y[:, k], prob[:, k], average=None)
#eer = pp_data.eer(prob[:, k], y[:, k])
skip = 1000
dict = {
'precisions': precisions[0::skip],
'recalls': recalls[0::skip],
'AP': avg_precision,
'fpr': fpr[0::skip],
'fnr': 1. - tpr[0::skip],
'auc': auc
}
stats.append(dict)
logging.info("Callback time: %s" % (time.time() - t1, ))
dump_path = os.path.join(out_dir, "md%d_iters.p" % iter_)
cPickle.dump(stats,
open(dump_path, 'wb'),
protocol=cPickle.HIGHEST_PROTOCOL)
logging.info("mAP: %f" % np.mean([e['AP'] for e in stats]))
def write_out_at_sed(md, gen, f_forward, x, at_y, sed_y, n_events, snr, te_fold):
workspace = cfg.workspace
pred_at_all = []
seg_masks_all = []
gt_at_all = []
gt_sed_all = []
for [batch_x, batch_at_y, batch_sed_y] in gen.generate(zs=[x, at_y, sed_y]):
# AT.
[at_pred] = md.predict(batch_x, batch_size=None)
pred_at_all.append(at_pred)
# SED.
[seg_masks] = md.run_function(func=f_forward, z=[batch_x], batch_size=500, tr_phase=0.)
seg_masks_all.append(seg_masks)
gt_at_all.append(batch_at_y)
gt_sed_all.append(batch_sed_y)
# DO NOT SHUFFLE DATA!
pred_at_all = np.concatenate(pred_at_all, axis=0)
seg_masks_all = np.concatenate(seg_masks_all, axis=0)
gt_at_all = np.concatenate(gt_at_all, axis=0)
gt_sed_all = np.concatenate(gt_sed_all, axis=0)
# Compress to float16 to reduce space.
pred_at_all = pred_at_all.astype(np.float16)
seg_masks_all = seg_masks_all.astype(np.float16)
print(pred_at_all.shape)
print(seg_masks_all.shape)
print(pred_at_all.dtype)
out_dir = os.path.join(workspace, "callbacks", "preds", pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold, "snr=%d" % snr,
"md%d_iters" % md.iter_)
pp_data.create_folder(out_dir)
out_at_path = os.path.join(out_dir, "at_probs.p")
out_seg_masks_path = os.path.join(out_dir, "seg_masks.p")
cPickle.dump(pred_at_all, open(out_at_path, 'wb'), protocol=cPickle.HIGHEST_PROTOCOL)
cPickle.dump(seg_masks_all, open(out_seg_masks_path, 'wb'), protocol=cPickle.HIGHEST_PROTOCOL)
thres = 0.5
(tp, fn, fp, tn) = tp_fn_fp_tn(pred_at_all, gt_at_all, thres, average='macro')
(prec, recall, fvalue) = prec_recall_fvalue(pred_at_all, gt_at_all, thres, average='macro')
logging.info("tp, fn, fp, tn: %d %d %d %d" % (tp, fn, fp, tn))
logging.info("prec, recall, fvalue: %f %f %f" % (prec, recall, fvalue))
def eval(model, x, y, out_dir, out_probs_dir, md_iter):
pp_data.create_folder(out_dir)
# Predict
t1 = time.time()
(n_clips, n_time_, n_freq) = x.shape
(x, y) = pp_data.transform_data(x, y)
prob = model.predict(x)
prob = prob.astype(np.float32)
print("The %d time into evalution." % md_iter)
if out_probs_dir:
pp_data.create_folder(out_probs_dir)
out_prob_path = os.path.join(out_probs_dir,
"prob_%d_iters.p" % md_iter)
#cPickle.dump(prob, open(out_prob_path, 'wb'))
# Dump predicted probabilities for future average
n_out = y.shape[1]
stats = []
t1 = time.time()
for k in range(n_out):
(precisions, recalls,
thresholds) = metrics.precision_recall_curve(y[:, k], prob[:, k])
avg_precision = metrics.average_precision_score(y[:, k],
prob[:, k],
average=None)
(fpr, tpr, thresholds) = metrics.roc_curve(y[:, k], prob[:, k])
auc = metrics.roc_auc_score(y[:, k], prob[:, k], average=None)
eer = pp_data.eer(prob[:, k], y[:, k])
skip = 1000
dict = {
'precisions': precisions[0::skip],
'recalls': recalls[0::skip],
'AP': avg_precision,
'fpr': fpr[0::skip],
'fnr': 1. - tpr[0::skip],
'auc': auc
}
stats.append(dict)
logging.info("Callback time: %s" % (time.time() - t1, ))
dump_path = os.path.join(out_dir, "model_%d_iters.p" % (md_iter, ))
cPickle.dump(stats, open(dump_path, 'wb'))
mAP = np.mean([e['AP'] for e in stats])
logging.info("mAP of %d iteration: %f" % (md_iter, mAP))
return mAP
def plot_training_stat(args):
"""Plot training and testing loss.
Args:
workspace: str, path of workspace.
tr_snr: float, training SNR.
bgn_iter: int, plot from bgn_iter
fin_iter: int, plot finish at fin_iter
interval_iter: int, interval of files.
"""
workspace = args.workspace
tr_snr = args.tr_snr
bgn_iter = args.bgn_iter
fin_iter = args.fin_iter
interval_iter = args.interval_iter
tr_losses, te_losses, iters = [], [], []
# Load stats.
stats_dir = os.path.join(workspace, "training_stats", "%ddb" % int(tr_snr))
for iter in xrange(bgn_iter, fin_iter, interval_iter):
stats_path = os.path.join(stats_dir, "%diters.p" % iter)
dict = cPickle.load(open(stats_path, 'rb'))
tr_losses.append(dict['tr_loss'])
te_losses.append(dict['te_loss'])
iters.append(dict['iter'])
# Plot
line_tr, = plt.plot(tr_losses, c='b', label="Train")
line_te, = plt.plot(te_losses, c='r', label="Test")
plt.axis([0, len(iters), 0, max(tr_losses)])
plt.xlabel("Iterations")
plt.ylabel("Loss")
plt.legend(handles=[line_tr, line_te])
plt.xticks(np.arange(len(iters)), iters)
# plt.show()
out_path = os.path.join(workspace, "figures", "train_history.png")
pp_data.create_folder(os.path.dirname(out_path))
plt.savefig(out_path)
def train(args):
num_classes = cfg.num_classes
tr_data = h5py.File(args.tr_hdf5_path, 'r+')
te_data = h5py.File(args.te_hdf5_path, 'r+')
tr_shape = tr_data['x'].shape
print("tr_x.shape: %s" % (tr_shape,))
# Build model
model = create_model(num_classes, tr_shape)
# Save model callback
filepath = os.path.join(args.out_model_dir, "gatedAct_rationBal44_lr0.001_normalization_at_cnnRNN_64newMel_240fr.{epoch:02d}-{val_acc:.4f}.hdf5")
print(filepath)
create_folder(os.path.dirname(filepath))
save_model = ModelCheckpoint(filepath=filepath,
monitor='val_acc',
verbose=0,
save_best_only=False,
save_weights_only=False,
mode='auto',
period=1)
num_examples = 41498
batch_size = 8
# Data generator
gen = RatioDataGenerator(batch_size=batch_size, type='train')
# Train
model.fit_generator(generator=gen.generate(tr_data),
steps_per_epoch=5.5*100, # 100 iters is called an 'epoch'
epochs=31, # Maximum 'epoch' to train - With larger dataset loss increased after epoch 28
verbose=1,
callbacks=[save_model],
validation_data=(te_data['x'], te_data['y']))
def ibm_separation(args):
"""Ideal binary mask (IBM) source separation.
"""
workspace = args.workspace
out_dir = os.path.join(workspace, "separated_wavs", "ibm_separation")
pp_data.create_folder(out_dir)
audio_dir = os.path.join(workspace, "mixed_audio", "testing")
names = os.listdir(audio_dir)
n_window = cfg.n_window
n_overlap = cfg.n_overlap
fs = cfg.sample_rate
clip_sec = cfg.clip_sec
ham_win = np.hamming(n_window)
recover_scaler = np.sqrt((ham_win**2).sum())
for na in names:
if '.mix_0db.wav' in na:
print(na)
bare_na = os.path.splitext(os.path.splitext(na)[0])[0]
audio_path = os.path.join(audio_dir, na)
(bg_audio, event_audio, fs) = pp_data.read_audio_stereo(audio_path)
mixed_audio = bg_audio + event_audio
[f, t, bg_spec] = signal.spectral.spectrogram(x=bg_audio,
window=ham_win,
nperseg=n_window,
noverlap=n_overlap,
detrend=False,
return_onesided=True,
scaling='density',
mode='magnitude')
[f, t,
event_spec] = signal.spectral.spectrogram(x=event_audio,
window=ham_win,
nperseg=n_window,
noverlap=n_overlap,
detrend=False,
return_onesided=True,
scaling='density',
mode='magnitude')
[f, t,
mixed_spec] = signal.spectral.spectrogram(x=mixed_audio,
window=ham_win,
nperseg=n_window,
noverlap=n_overlap,
detrend=False,
return_onesided=True,
scaling='density',
mode='complex')
bg_spec = bg_spec.T
event_spec = event_spec.T
mixed_spec = mixed_spec.T
ratio = 1.7 # 5 dB
event_mask = (np.sign(event_spec / (bg_spec * ratio) - 1) + 1) / 2
bg_mask = 1. - event_mask
bg_separated_spec = np.abs(mixed_spec) * bg_mask
event_separated_spec = np.abs(mixed_spec) * event_mask
# Write out separated music
s = spectrogram_to_wave.recover_wav(bg_separated_spec,
mixed_spec,
n_overlap=n_overlap,
winfunc=np.hamming,
wav_len=int(fs * clip_sec))
s *= recover_scaler
pp_data.write_audio(os.path.join(out_dir, bare_na + ".sep_bg.wav"),
s, fs)
# Write out separated vocal
s = spectrogram_to_wave.recover_wav(event_separated_spec,
mixed_spec,
n_overlap=n_overlap,
winfunc=np.hamming,
wav_len=int(fs * clip_sec))
s *= recover_scaler
pp_data.write_audio(
os.path.join(out_dir, bare_na + ".sep_event.wav"), s, fs)
print("Finished!")
def jsc_separation(args):
"""Joing separation-classification (JSC) source separation.
"""
workspace = args.workspace
scaler_path = os.path.join(workspace, "scalers", "logmel",
"training.scaler")
scaler = pickle.load(open(scaler_path, 'rb'))
md_path = os.path.join(workspace, "models", "main", args.model_name)
md = serializations.load(md_path)
out_dir = os.path.join(workspace, "separated_wavs", "jsc_separation")
pp_data.create_folder(out_dir)
observe_nodes = [md.find_layer('seg_masks').output_]
f_forward = md.get_observe_forward_func(observe_nodes)
audio_dir = os.path.join(os.path.join(workspace, "mixed_audio", "testing"))
names = os.listdir(audio_dir)
n_window = cfg.n_window
n_overlap = cfg.n_overlap
fs = cfg.sample_rate
ham_win = np.hamming(n_window)
recover_scaler = np.sqrt((ham_win**2).sum())
melW = librosa.filters.mel(sr=fs,
n_fft=n_window,
n_mels=64,
fmin=0.,
fmax=fs / 2)
inverse_melW = get_inverse_W(melW)
for na in names:
if ".mix" in na:
# Read yaml
bare_name = os.path.splitext(os.path.splitext(na)[0])[0]
yaml_path = os.path.join(audio_dir, "%s.yaml" % bare_name)
with open(yaml_path, 'r') as f:
data = yaml.load(f)
event_type = data['event_type']
print(na, event_type)
# Read audio
audio_path = os.path.join(audio_dir, na)
(bg_audio, event_audio, _) = pp_data.read_audio_stereo(audio_path)
mixed_audio = bg_audio + event_audio
# Spectrogram
[f, t, bg_spec] = signal.spectral.spectrogram(x=bg_audio,
window=ham_win,
nperseg=n_window,
noverlap=n_overlap,
detrend=False,
return_onesided=True,
scaling='density',
mode='complex')
[f, t,
event_spec] = signal.spectral.spectrogram(x=event_audio,
window=ham_win,
nperseg=n_window,
noverlap=n_overlap,
detrend=False,
return_onesided=True,
scaling='density',
mode='complex')
[f, t,
mixed_spec] = signal.spectral.spectrogram(x=mixed_audio,
window=ham_win,
nperseg=n_window,
noverlap=n_overlap,
detrend=False,
return_onesided=True,
scaling='density',
mode='complex')
bg_spec = bg_spec.T
event_spec = event_spec.T
mixed_spec = mixed_spec.T
# Log Mel spectrogram
mixed_x = pp_data.calc_feat(mixed_audio)
x3d = pp_data.do_scaler_on_x3d(mixed_x[np.newaxis, ...], scaler)
# Segmentation masks
[mel_masks] = md.run_function(f_forward,
x3d,
batch_size=10,
tr_phase=0.)
mel_masks = mel_masks[0] # (n_time, 64)
spec_masks = np.dot(mel_masks, inverse_melW) # (n_time, 513)
if args.plot_only:
mixed_mel_spec = np.dot(np.abs(mixed_spec), melW.T)
bg_mel_spec = np.dot(np.abs(bg_spec), melW.T)
event_mel_spec = np.dot(np.abs(event_spec), melW.T)
ratio = 1.7 # 5 dB
event_mask = (np.sign(event_mel_spec /
(bg_mel_spec * ratio) - 1) + 1) / 2
fig, axs = plt.subplots(3, 2, sharex=True)
axs[0, 0].matshow(np.log(mixed_mel_spec.T),
origin='lower',
aspect='auto')
axs[0, 1].matshow(event_mask.T, origin='lower', aspect='auto')
axs[1, 0].matshow(spec_masks[0].T,
origin='lower',
aspect='auto',
vmin=0.,
vmax=1.)
axs[1, 1].matshow(spec_masks[1].T,
origin='lower',
aspect='auto',
vmin=0.,
vmax=1.)
axs[2, 0].matshow(spec_masks[2].T,
origin='lower',
aspect='auto',
vmin=0.,
vmax=1.)
axs[2, 1].matshow(spec_masks[3].T,
origin='lower',
aspect='auto',
vmin=0.,
vmax=1.)
axs[0, 0].set_title('log Mel of mixture')
axs[0, 1].set_title('IBM of event')
axs[1, 0].set_title('babycry')
axs[1, 1].set_title('glassbreak')
axs[2, 0].set_title('gunshot')
axs[2, 1].set_title('bg')
plt.show()
else:
# Separated spec
separated_specs = spec_masks * np.abs(mixed_spec)[None, :, :]
# Write out all events and bg
enlarged_events = cfg.events + ['bg']
for i1 in xrange(4):
s = spectrogram_to_wave.recover_wav(
separated_specs[i1],
mixed_spec,
n_overlap=n_overlap,
winfunc=np.hamming,
wav_len=len(mixed_audio))
s *= recover_scaler
pp_data.write_audio(
os.path.join(
out_dir, "%s.sep_%s.wav" %
(bare_name, enlarged_events[i1])), s, fs)
# Write out event
s = spectrogram_to_wave.recover_wav(
separated_specs[cfg.lb_to_ix[event_type]],
mixed_spec,
n_overlap=n_overlap,
winfunc=np.hamming,
wav_len=len(mixed_audio))
s *= recover_scaler
pp_data.write_audio(
os.path.join(out_dir, "%s.sep_event.wav" % bare_name), s,
fs)
# Write out origin mix
pp_data.write_audio(
os.path.join(out_dir, "%s.sep_mix.wav" % bare_name),
mixed_audio, fs)
def evaluate_separation(args):
workspace = cfg.workspace
events = cfg.events
te_fold = cfg.te_fold
n_window = cfg.n_window
n_overlap = cfg.n_overlap
fs = cfg.sample_rate
clip_duration = cfg.clip_duration
n_events = args.n_events
snr = args.snr
# Load ground truth data.
feature_dir = os.path.join(workspace, "features", "logmel",
"n_events=%d" % n_events)
yaml_dir = os.path.join(workspace, "mixed_audio", "n_events=%d" % n_events)
(tr_x, tr_at_y, tr_sed_y, tr_na_list, te_x, te_at_y, te_sed_y,
te_na_list) = pp_data.load_data(feature_dir=feature_dir,
yaml_dir=yaml_dir,
te_fold=te_fold,
snr=snr,
is_scale=is_scale)
at_y = te_at_y
sed_y = te_sed_y
na_list = te_na_list
audio_dir = os.path.join(workspace, "mixed_audio",
"n_events=%d" % n_events)
sep_dir = os.path.join(workspace, "sep_audio",
pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr)
sep_stats = {}
for e in events:
sep_stats[e] = {'sdr': [], 'sir': [], 'sar': []}
cnt = 0
for (i1, na) in enumerate(na_list):
bare_na = os.path.splitext(na)[0]
gt_audio_path = os.path.join(audio_dir, "%s.wav" % bare_na)
(stereo_audio, _) = pp_data.read_stereo_audio(gt_audio_path,
target_fs=fs)
gt_event_audio = stereo_audio[:, 0]
gt_noise_audio = stereo_audio[:, 1]
print(na)
for j1 in xrange(len(events)):
if at_y[i1][j1] == 1:
sep_event_audio_path = os.path.join(
sep_dir, "%s.%s.wav" % (bare_na, events[j1]))
(sep_event_audio, _) = pp_data.read_audio(sep_event_audio_path,
target_fs=fs)
sep_noise_audio_path = os.path.join(sep_dir,
"%s.noise.wav" % bare_na)
(sep_noise_audio, _) = pp_data.read_audio(sep_noise_audio_path,
target_fs=fs)
ref_array = np.array((gt_event_audio, gt_noise_audio))
est_array = np.array((sep_event_audio, sep_noise_audio))
(sdr, sir, sar) = sdr_sir_sar(ref_array,
est_array,
sed_y[i1, :, j1],
inside_only=True)
print(sdr, sir, sar)
sep_stats[events[j1]]['sdr'].append(sdr)
sep_stats[events[j1]]['sir'].append(sir)
sep_stats[events[j1]]['sar'].append(sar)
cnt += 1
# if cnt == 5: break
print(sep_stats)
sep_stat_path = os.path.join(workspace, "sep_stats",
pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr, "sep_stat.p")
pp_data.create_folder(os.path.dirname(sep_stat_path))
cPickle.dump(sep_stats, open(sep_stat_path, 'wb'))
def train(args):
"""Train the neural network. Write out model every several iterations.
Args:
workspace: str, path of workspace.
tr_snr: float, training SNR.
te_snr: float, testing SNR.
lr: float, learning rate.
"""
print(args)
workspace = args.workspace
tr_snr = args.tr_snr
te_snr = args.te_snr
lr = args.lr
iteration = args.iter
# Load data.
t1 = time.time()
tr_hdf5_path = os.path.join(workspace, "packed_features", "spectrogram", "train", "%ddb" % int(tr_snr), "data.h5")
te_hdf5_path = os.path.join(workspace, "packed_features", "spectrogram", "test", "%ddb" % int(te_snr), "data.h5")
tr_adapt_utt_path = os.path.join(workspace, "adaptive_utterance", "train", "adaptive_utterance_spec.p")
te_adapt_utt_path = os.path.join(workspace, "adaptive_utterance", "test", "adaptive_utterance_spec.p")
tr_adapt_utt = cPickle.load(open(tr_adapt_utt_path, 'rb'))
te_adapt_utt = cPickle.load(open(te_adapt_utt_path, 'rb'))
tr_adapt_utt_len_path = os.path.join(workspace, "adaptive_utterance", "train", "adaptive_utterance_max_len.p")
te_adapt_utt_len_path = os.path.join(workspace, "adaptive_utterance", "test", "adaptive_utterance_max_len.p")
tr_adapt_utt_len = cPickle.load(open(tr_adapt_utt_len_path, 'rb'))
te_adapt_utt_len = cPickle.load(open(te_adapt_utt_len_path, 'rb'))
max_len = max(tr_adapt_utt_len, te_adapt_utt_len)
(tr_x1, tr_x2, tr_y1, tr_y2, tr_name) = pp_data.load_hdf5(tr_hdf5_path)
(te_x1, te_x2, te_y1, te_y2, te_name) = pp_data.load_hdf5(te_hdf5_path)
print(tr_x1.shape, tr_y1.shape, tr_x2.shape, tr_y2.shape)
print(te_x1.shape, te_y1.shape, te_x2.shape, te_y2.shape)
print("Load data time: %s s" % (time.time() - t1,))
batch_size = 500
print("%d iterations / epoch" % int(tr_x1.shape[0] / batch_size))
# Scale data.
if not True:
t1 = time.time()
scaler_path = os.path.join(workspace, "packed_features", "spectrogram", "train", "%ddb" % int(tr_snr),
"scaler.p")
scaler = pickle.load(open(scaler_path, 'rb'))
tr_x1 = pp_data.scale_on_3d(tr_x1, scaler)
tr_y1 = pp_data.scale_on_2d(tr_y1, scaler)
te_x1 = pp_data.scale_on_3d(te_x1, scaler)
te_y1 = pp_data.scale_on_2d(te_y1, scaler)
tr_x2 = pp_data.scale_on_2d(tr_x2, scaler)
tr_y2 = pp_data.scale_on_2d(tr_y2, scaler)
te_x2 = pp_data.scale_on_2d(te_x2, scaler)
te_y2 = pp_data.scale_on_2d(te_y2, scaler)
print("Scale data time: %s s" % (time.time() - t1,))
# Debug plot.
if False:
plt.matshow(tr_x[0: 1000, 0, :].T, origin='lower', aspect='auto', cmap='jet')
plt.show()
pause
# Build model
(_, n_concat, n_freq) = tr_x1.shape
n_hid = 2048
input_dim1 = (257 + 40 + 30) * 2
input_dim2 = (257 + 40 + 30)
out_dim1 = (257 + 40 + 30) * 2
out_dim1_irm = 257 + 40 + 64
out_dim2 = (257 + 40 + 30)
out_dim2_irm = (257 + 40 + 64)
num_factorize = 30
def multiplication(pair_tensors):
'''
:param pair_tensors: x: (num_factorize,)
y: (num_factorize, n_hid)
:return: (n_hid,) sum(x[i]*y[i,:],axis=1)
'''
x, y = pair_tensors
return K.sum(tf.multiply(y, K.expand_dims(x, -1)), axis=1)
adapt_input = Input(shape=(None,), name='adapt_input')
layer = Reshape((-1, 257), name='reshape')(adapt_input)
layer = Dense(512, activation='relu', name='adapt_dense1')(layer)
layer = Dense(512, activation='relu', name='adapt_dense2')(layer)
layer = Dense(num_factorize, activation='softmax', name='adapt_out')(layer)
alpha = Lambda(lambda x: K.sum(x, axis=1), output_shape=(num_factorize,), name='sequence_sum')(layer)
input1 = Input(shape=(n_concat, input_dim1), name='input1')
layer = Flatten(name='flatten')(input1)
layer = Dense(n_hid * num_factorize, name='dense0')(layer)
layer = Reshape((num_factorize, n_hid), name='reshape2')(layer)
layer = Lambda(multiplication, name='multiply')([alpha, layer])
layer = Dense(n_hid, activation='relu', name='dense1')(layer)
layer = Dropout(0.2)(layer)
layer = Dense(n_hid, activation='relu', name='dense2')(layer)
layer = Dropout(0.2)(layer)
partial_out1 = Dense(out_dim1, name='1_out_linear')(layer)
partial_out1_irm = Dense(out_dim1_irm, name='1_out_irm', activation='sigmoid')(layer)
out1 = concatenate([partial_out1, partial_out1_irm], name='out1')
input2 = Input(shape=(input_dim2,), name='input2')
layer = concatenate([input2, out1], name='merge')
layer = Dense(n_hid, activation='relu', name='dense3')(layer)
layer = Dropout(0.2)(layer)
layer = Dense(n_hid, activation='relu', name='dense4')(layer)
layer = Dropout(0.2)(layer)
partial_out2 = Dense(out_dim2, name='2_out_linear')(layer)
partial_out2_irm = Dense(out_dim2_irm, name='2_out_irm', activation='sigmoid')(layer)
out2 = concatenate([partial_out2, partial_out2_irm], name='out2')
model = Model(inputs=[input1, input2, adapt_input], outputs=[out1, out2])
model.summary()
sys.stdout.flush()
model.compile(loss='mean_absolute_error',
optimizer=Adam(lr=lr, epsilon=1e-03))
# Data generator.
tr_gen = DataGenerator(batch_size=batch_size, type='train', max_len=max_len)
eval_te_gen = DataGenerator(batch_size=batch_size, type='test', te_max_iter=100, max_len=max_len)
eval_tr_gen = DataGenerator(batch_size=batch_size, type='test', te_max_iter=100, max_len=max_len)
# Directories for saving models and training stats
model_dir = os.path.join(workspace, "models", "%ddb" % int(tr_snr))
pp_data.create_folder(model_dir)
stats_dir = os.path.join(workspace, "training_stats", "%ddb" % int(tr_snr))
pp_data.create_folder(stats_dir)
# Print loss before training.
iter = 0
tr_loss = eval(model, eval_tr_gen, tr_x1, tr_x2, tr_y1, tr_y2, tr_name, tr_adapt_utt)
te_loss = eval(model, eval_te_gen, te_x1, te_x2, te_y1, te_y2, te_name, te_adapt_utt)
print("Iteration: %d, tr_loss: %f, te_loss: %f" % (iter, tr_loss, te_loss))
# Save out training stats.
stat_dict = {'iter': iter,
'tr_loss': tr_loss,
'te_loss': te_loss, }
stat_path = os.path.join(stats_dir, "%diters.p" % iter)
cPickle.dump(stat_dict, open(stat_path, 'wb'), protocol=cPickle.HIGHEST_PROTOCOL)
# Train.
t1 = time.time()
for (batch_x, batch_y) in tr_gen.generate([tr_x1, tr_x2, tr_name], [tr_y1, tr_y2], tr_adapt_utt):
loss = model.train_on_batch(batch_x, batch_y)
iter += 1
# Validate and save training stats.
if iter % 100 == 0:
tr_loss = eval(model, eval_tr_gen, tr_x1, tr_x2, tr_y1, tr_y2, tr_name, tr_adapt_utt)
te_loss = eval(model, eval_te_gen, te_x1, te_x2, te_y1, te_y2, te_name, te_adapt_utt)
print("Iteration: %d, tr_loss: %f, te_loss: %f" % (iter, tr_loss, te_loss))
sys.stdout.flush()
# Save out training stats.
stat_dict = {'iter': iter,
'tr_loss': tr_loss,
'te_loss': te_loss, }
stat_path = os.path.join(stats_dir, "%diters.p" % iter)
cPickle.dump(stat_dict, open(stat_path, 'wb'), protocol=cPickle.HIGHEST_PROTOCOL)
# Save model.
if iter % (iteration / 20) == 0:
model_path = os.path.join(model_dir, "md_%diters.h5" % iter)
model.save(model_path)
print("Saved model to %s" % model_path)
if iter == iteration + 1:
break
print("Training time: %s s" % (time.time() - t1,))
def train(args):
if os.path.exists(args.out_model_dir):
shutil.rmtree(args.out_model_dir)
create_folder(args.out_model_dir)
num_classes = cfg.num_classes
# Load training & testing data
(tr_x, tr_y, tr_na_list) = load_hdf5(args.tr_hdf5_path, verbose=1)
(te_x, te_y, te_na_list) = load_hdf5(args.te_hdf5_path, verbose=1)
print("")
# Scale data
tr_x = do_scale(tr_x, args.scaler_path, verbose=1)
te_x = do_scale(te_x, args.scaler_path, verbose=1)
# Build model
(_, n_time, n_freq) = tr_x.shape
#pdb.set_trace()
input = Input(shape=(n_time, n_freq), name='input_layer')
input_ = Reshape((n_time, n_freq, 1))(input)
'''
block1 = Conv_BN(input_, 8, (3, 3), act="relu")
block1 = Conv_BN(block1, 32, (3, 3), act="relu")
block1 = Conv_BN(block1, 64, (3, 3), act="relu")
block1 = block_a(input_, 8)
block1 = block_a(block1, 32)
block1 = block_a(block1, 64)
'''
block1 = block_b(input_, 8)
block1 = block_b(block1, 32)
block1 = block_b(block1, 64)
block1 = MaxPooling2D(pool_size=(1, 2))(block1)
block2 = block_c(block1, 64)
block2 = MaxPooling2D(pool_size=(1, 2))(block2)
block3 = block_c(block2, 64)
block3 = MaxPooling2D(pool_size=(1, 2))(block3)
block4 = block_c(block3, 64)
block4 = MaxPooling2D(pool_size=(1, 2))(block4)
cnnout = Conv_BN(block4, 128, (1, 1), act="relu", bias=True)
cnnout = MaxPooling2D(pool_size=(1, 2))(cnnout)
cnnout = Reshape((240, 256))(cnnout)
rnn = Bidirectional(
GRU(128,
activation='relu',
return_sequences=True,
kernel_regularizer=regularizers.l2(0.01),
recurrent_regularizer=regularizers.l2(0.01)))(cnnout)
out = TimeDistributed(Dense(
num_classes,
activation='softmax',
kernel_regularizer=regularizers.l2(0.0),
),
name='output_layer')(rnn)
model = Model(input, out)
model.summary()
# Compile model
adam = optimizers.Adam(lr=0.001, beta_1=0.9, beta_2=0.999, decay=0.009)
sgd = optimizers.SGD(lr=0.01, momentum=0.9, decay=0.0)
model.compile(loss=focal_loss(alpha=[1, 1, 1, 1], gamma=1),
optimizer="adam",
metrics=[myacc(threshold=0.5)])
# Save model callback
filepath = os.path.join(
args.out_model_dir,
"aed-batchsize_50-lr_0.01-{epoch:04d}-{val_Acc:.4f}.hdf5")
save_model = ModelCheckpoint(filepath=filepath,
monitor='val_Acc',
verbose=0,
save_best_only=False,
save_weights_only=False,
mode='auto',
period=1)
# Train
'''
history=model.fit( x=tr_x,
y=tr_y,
batch_size=50,
epochs=200,
verbose=1,
shuffle=True,
class_weight="auto",
callbacks=[save_model],
validation_data=(te_x,te_y)
)
'''
# Data generator
gen = Generator(batch_size=50, type='train')
history = model.fit_generator(
generator=gen.generate([tr_x], [tr_y]),
steps_per_epoch=300, # 100 iters is called an 'epoch'
epochs=100, # Maximum 'epoch' to train
verbose=1,
class_weight="auto",
callbacks=[save_model],
validation_data=(te_x, te_y))
with open('src/log.py', 'w') as f:
f.write("history=")
f.write(str(history.history))
def inference_wiener(args):
workspace = args.workspace
iter = args.iteration
stack_num = args.stack_num
filename = args.filename
mini_num = args.mini_num
visualize = args.visualize
cuda = args.use_cuda and torch.cuda.is_available()
print("cuda:", cuda)
sample_rate = cfg.sample_rate
fft_size = cfg.fft_size
hop_size = cfg.hop_size
window_type = cfg.window_type
if window_type == 'hamming':
window = np.hamming(fft_size)
# Audio
audio_dir = "/vol/vssp/msos/qk/workspaces/speech_enhancement/mixed_audios/spectrogram/test/0db"
# audio_dir = "/user/HS229/qk00006/my_code2015.5-/python/pub_speech_enhancement/mixture2clean_dnn/workspace/mixed_audios/spectrogram/test/0db"
names = os.listdir(audio_dir)
# Load model.
target_type = ['speech', 'noise']
model_dict = {}
for e in target_type:
n_freq = 257
model = DNN(stack_num, n_freq)
model_path = os.path.join(workspace, "models", filename, e,
"md_%d_iters.tar" % iter)
checkpoint = torch.load(model_path)
model.load_state_dict(checkpoint['state_dict'])
# Move model to GPU.
if cuda:
model.cuda()
model.eval()
model_dict[e] = model
# Load scalar
scalar_path = os.path.join(workspace, "scalars", filename, "scalar.p")
(mean_, std_) = cPickle.load(open(scalar_path, 'rb'))
mean_ = move_data_to_gpu(mean_, cuda, volatile=True)
std_ = move_data_to_gpu(std_, cuda, volatile=True)
if mini_num > 0:
n_every = len(names) / mini_num
else:
n_every = 1
out_wav_dir = os.path.join(workspace, "enh_wavs", filename)
pp_data.create_folder(out_wav_dir)
for (cnt, name) in enumerate(names):
if cnt % n_every == 0:
audio_path = os.path.join(audio_dir, name)
(audio, _) = pp_data.read_audio(audio_path, sample_rate)
audio = pp_data.normalize(audio)
cmplx_sp = pp_data.calc_sp(audio, fft_size, hop_size, window)
x = np.abs(cmplx_sp)
# Process data.
n_pad = (stack_num - 1) / 2
x = pp_data.pad_with_border(x, n_pad)
x = pp_data.mat_2d_to_3d(x, stack_num, hop=1)
# Predict.
pred_dict = {}
for e in target_type:
pred = forward(model_dict[e], x, mean_, std_, cuda)
pred = pred.data.cpu().numpy()
pred_dict[e] = pred
print(cnt, name)
# Wiener filter.
pred_mag_sp = pred_dict['speech'] / (
pred_dict['speech'] + pred_dict['noise']) * np.abs(cmplx_sp)
pred_cmplx_sp = stft.real_to_complex(pred_mag_sp, cmplx_sp)
frames = stft.istft(pred_cmplx_sp)
cola_constant = stft.get_cola_constant(hop_size, window)
seq = stft.overlap_add(frames, hop_size, cola_constant)
seq = seq[0:len(audio)]
# Write out wav
out_wav_path = os.path.join(out_wav_dir, name)
pp_data.write_audio(out_wav_path, seq, sample_rate)
print("Write out wav to: %s" % out_wav_path)
if visualize:
vmin = -5.
vmax = 5.
fig, axs = plt.subplots(3, 1, sharex=True)
axs[0].matshow(np.log(np.abs(cmplx_sp)).T,
origin='lower',
aspect='auto',
cmap='jet')
axs[1].matshow(np.log(np.abs(pred_dict['speech'])).T,
origin='lower',
aspect='auto',
cmap='jet')
axs[2].matshow(np.log(np.abs(pred_dict['noise'])).T,
origin='lower',
aspect='auto',
cmap='jet')
plt.show()
def inference(args):
"""Inference all test data, write out recovered wavs to disk.
Args:
workspace: str, path of workspace.
tr_snr: float, training SNR.
te_snr: float, testing SNR.
n_concat: int, number of frames to concatenta, should equal to n_concat
in the training stage.
iter: int, iteration of model to load.
visualize: bool, plot enhanced spectrogram for debug.
"""
print(args)
workspace = args.workspace
tr_snr = args.tr_snr
te_snr = args.te_snr
n_concat = args.n_concat
iter = args.iteration
n_noise_frame = args.noise_frame
n_hop = args.n_hop
n_window = cfg.n_window
n_overlap = cfg.n_overlap
fs = cfg.sample_rate
scale = False
# Load model.
model_path = os.path.join(workspace, "models", "%ddb" % int(tr_snr),
"md_%diters.h5" % iter)
model = load_model(model_path)
# Load scaler.
# scaler_path = os.path.join(workspace, "packed_features", "spectrogram", "train", "%ddb" % int(tr_snr), "scaler.p")
# scaler = pickle.load(open(scaler_path, 'rb'))
# Load test data.
feat_dir = os.path.join(workspace, "features", "spectrogram", "test",
"%ddb" % int(te_snr))
names = os.listdir(feat_dir)
mel_basis = librosa.filters.mel(cfg.sample_rate, cfg.n_window, n_mels=40)
for (cnt, na) in enumerate(names):
# Load feature.
feat_path = os.path.join(feat_dir, na)
data = cPickle.load(open(feat_path, 'rb'))
[mixed_cmplx_x, speech_x, noise_x, alpha, na] = data
input1_3d, input2, out1, out2 = pp_data.get_input_output_layer(
mixed_cmplx_x, speech_x, noise_x, alpha, n_concat, n_noise_frame,
n_hop, mel_basis)
# Predict.
pred = model.predict([input1_3d, input2])
print(cnt, na)
sys.stdout.flush()
# Inverse scale.
if scale:
mixed_x = pp_data.inverse_scale_on_2d(mixed_x, scaler)
speech_x = pp_data.inverse_scale_on_2d(speech_x, scaler)
pred = pp_data.inverse_scale_on_2d(pred, scaler)
# post processing
pred_speech_lps = 1 / 3.0 * (pred[0][:, :257] + pred[1][:, :257] +
np.log(np.abs(mixed_cmplx_x) + 1e-08) +
np.log(pred[1][:, 327:584]))
# Debug plot.
if args.visualize:
out_path = os.path.join(workspace, "figures", "test",
"%ddb" % int(te_snr), "%s.all.png" % na)
pp_data.create_folder(os.path.dirname(out_path))
fig, axs = plt.subplots(3, 1, sharex=False)
axs[0].matshow(np.log(np.abs(mixed_cmplx_x.T) + 1e-08),
origin='lower',
aspect='auto',
cmap='jet')
axs[1].matshow(np.log(speech_x.T + 1e-08),
origin='lower',
aspect='auto',
cmap='jet')
axs[2].matshow(pred_speech_lps.T,
origin='lower',
aspect='auto',
cmap='jet')
axs[0].set_title("%ddb mixture log spectrogram" % int(te_snr))
axs[1].set_title("Clean speech log spectrogram")
axs[2].set_title("Enhanced speech log spectrogram")
for j1 in xrange(3):
axs[j1].xaxis.tick_bottom()
plt.tight_layout()
plt.savefig(out_path)
plt.close('all')
# plt.show()
out_path = os.path.join(workspace, "figures", "test",
"%ddb" % int(te_snr),
"%s.mixture.png" % na)
display.specshow(np.log(np.abs(mixed_cmplx_x.T) + 1e-08))
plt.title("%ddb mixture log spectrogram" % int(te_snr))
plt.savefig(out_path)
out_path = os.path.join(workspace, "figures", "test",
"%ddb" % int(te_snr), "%s.clean.png" % na)
display.specshow(np.log(speech_x.T + 1e-08))
plt.title("Clean speech log spectrogram")
plt.savefig(out_path)
out_path = os.path.join(workspace, "figures", "test",
"%ddb" % int(te_snr), "%s.enh.png" % na)
display.specshow(pred_speech_lps.T)
plt.title("Enhanced speech log spectrogram")
plt.savefig(out_path)
plt.close('all')
# Recover enhanced wav.
pred_sp = np.exp(pred_speech_lps)
s = recover_wav(pred_sp, mixed_cmplx_x, n_overlap, np.hamming)
s *= np.sqrt((np.hamming(n_window)**2
).sum()) # Scaler for compensate the amplitude
# change after spectrogram and IFFT.
# Write out enhanced wav.
out_path = os.path.join(workspace, "enh_wavs", "test",
"%ddb" % int(te_snr), "%s.enh.wav" % na)
pp_data.create_folder(os.path.dirname(out_path))
pp_data.write_audio(out_path, s, fs)
def inference(args):
cuda = args.use_cuda and torch.cuda.is_available()
workspace = args.workspace
model_name = args.model_name
feat_type = args.feat_type
script_na = args.script_na
# Load data.
te_packed_feat_path = os.path.join(workspace, "packed_features", feat_type,
"test.p")
[te_x_list, te_y_list,
te_na_list] = cPickle.load(open(te_packed_feat_path, 'rb'))
# Scale.
if True:
scale_path = os.path.join(workspace, "scalers", feat_type, "scaler.p")
scaler = pickle.load(open(scale_path, 'rb'))
te_x_list = pp_data.scale_on_x_list(te_x_list, scaler)
# Construct model topology.
n_concat = 3
te_n_hop = 1
n_freq = te_x_list[0].shape[-1]
n_out = te_y_list[0].shape[-1]
model = Net(n_concat, n_freq, n_out)
# Init the weights of model using trained weights.
model_path = os.path.join(workspace, "models", script_na, feat_type,
model_name)
if os.path.isfile(model_path):
print("Loading checkpoint '%s'" % model_path)
checkpoint = torch.load(model_path)
model.load_state_dict(checkpoint['state_dict'])
else:
raise Exception("Model path %s does not exist!" % model_path)
# Move model to GPU.
if cuda:
model.cuda()
# Directory to write out transcript midi files.
out_midi_dir = os.path.join(workspace, "out_midis",
pp_data.get_filename(__file__), feat_type)
pp_data.create_folder(out_midi_dir)
# Data to 3d.
n_half = (n_concat - 1) / 2
for i1 in xrange(len(te_x_list)):
x = te_x_list[i1] # (n_time, n_freq)
y = te_y_list[i1] # (n_time, n_out)
bare_na = os.path.splitext(te_na_list[i1])[0]
(n_time, n_freq) = x.shape
zero_pad = np.zeros((n_half, n_freq))
x = np.concatenate((zero_pad, x, zero_pad), axis=0)
x3d = pp_data.mat_2d_to_3d(x, n_concat,
te_n_hop) # (n_time, n_concat, n_freq)
# Move data to GPU.
x3d = torch.Tensor(x3d)
x3d = Variable(x3d)
if cuda:
x3d = x3d.cuda()
# Inference.
model.eval()
pred = model(x3d) # (n_time, n_out)
# Convert data type to numpy.
pred = pred.data.cpu().numpy()
# Threshold and write out predicted piano roll to midi file.
mid_roll = pp_data.prob_to_midi_roll(pred, 0.5)
out_path = os.path.join(out_midi_dir, "%s.mid" % bare_na)
print("Write out to: %s" % out_path)
pp_data.write_midi_roll_to_midi(mid_roll, out_path)
# Debug plot.
if True:
fig, axs = plt.subplots(3, 1, sharex=True)
axs[0].matshow(y.T, origin='lower', aspect='auto')
axs[1].matshow(pred.T, origin='lower', aspect='auto')
binary_pred = (np.sign(pred - 0.5) + 1) / 2
axs[2].matshow(binary_pred.T, origin='lower', aspect='auto')
axs[0].set_title("Ground truth")
axs[1].set_title("DNN output probability")
axs[2].set_title("DNN output probability after thresholding")
for j1 in xrange(3):
axs[j1].set_ylabel('note index')
axs[j1].set_xlabel('frames')
axs[j1].xaxis.set_label_coords(1.06, -0.01)
axs[j1].xaxis.tick_bottom()
plt.tight_layout()
plt.show()
def inference(args):
workspace = args.workspace
iter = args.iteration
stack_num = args.stack_num
filename = args.filename
mini_num = args.mini_num
visualize = args.visualize
cuda = args.use_cuda and torch.cuda.is_available()
print("cuda:", cuda)
audio_type = 'speech'
sample_rate = cfg.sample_rate
fft_size = cfg.fft_size
hop_size = cfg.hop_size
window_type = cfg.window_type
if window_type == 'hamming':
window = np.hamming(fft_size)
# Audio
audio_dir = "/vol/vssp/msos/qk/workspaces/speech_enhancement/mixed_audios/spectrogram/test/0db"
# audio_dir = "/user/HS229/qk00006/my_code2015.5-/python/pub_speech_enhancement/mixture2clean_dnn/workspace/mixed_audios/spectrogram/test/0db"
names = os.listdir(audio_dir)
speech_dir = "/vol/vssp/msos/qk/workspaces/speech_enhancement/timit_wavs/subtest"
# Load model
model_path = os.path.join(workspace, "models", filename, audio_type, "md_%d_iters.tar" % iter)
n_freq = 257
model = DNN(stack_num, n_freq)
checkpoint = torch.load(model_path)
model.load_state_dict(checkpoint['state_dict'])
if cuda:
model.cuda()
# Load scalar
scalar_path = os.path.join(workspace, "scalars", filename, "scalar.p")
(mean_, std_) = cPickle.load(open(scalar_path, 'rb'))
mean_ = move_data_to_gpu(mean_, cuda, volatile=True)
std_ = move_data_to_gpu(std_, cuda, volatile=True)
if mini_num > 0:
n_every = len(names) / mini_num
else:
n_every = 1
out_wav_dir = os.path.join(workspace, "enh_wavs", filename)
pp_data.create_folder(out_wav_dir)
dft = pp_data.DFT(fft_size, cuda)
for (cnt, name) in enumerate(names):
if cnt % n_every == 0:
audio_path = os.path.join(audio_dir, name)
(audio0, _) = pp_data.read_audio(audio_path, sample_rate)
audio = pp_data.normalize(audio0)
# Enframe
frames = stft.enframe(audio, fft_size, hop_size)
# Process data.
n_pad = (stack_num - 1) / 2
x = pp_data.pad_with_border(frames, n_pad)
x = pp_data.mat_2d_to_3d(x, stack_num, hop=1)
pred_frames = forward(model, x, mean_, std_, cuda)
pred_frames = pred_frames.data.cpu().numpy()
# cola_constant = 0.5
# seq = stft.overlap_add(pred_frames, hop_size, cola_constant)
pred_frames *= window
cola_constant = stft.get_cola_constant(hop_size, window)
seq = stft.overlap_add(pred_frames, hop_size, cola_constant)
seq = seq[0 : len(audio)]
# Write out wav
out_wav_path = os.path.join(out_wav_dir, name)
pp_data.write_audio(out_wav_path, seq, sample_rate)
print("Write out wav to: %s" % out_wav_path)
if visualize:
clean_audio_path = os.path.join(speech_dir, name.split('.')[0] + ".WAV")
(clean_audio, _) = pp_data.read_audio(clean_audio_path, sample_rate)
clean_audio = pp_data.normalize(clean_audio)
clean_frames = stft.enframe(clean_audio, fft_size, hop_size)
mix_sp = np.abs(np.fft.rfft(frames * window, norm='ortho'))
enh_sp = np.abs(np.fft.rfft(pred_frames * window, norm='ortho'))
clean_sp = np.abs(np.fft.rfft(clean_frames * window, norm='ortho'))
K = 10
fig, axs = plt.subplots(K/2,2, sharex=True)
for k in range(K):
axs[k / 2, k % 2].plot(frames[k+100], color='y')
axs[k / 2, k % 2].plot(clean_frames[k+100], color='r')
axs[k / 2, k % 2].plot(pred_frames[k+100], color='b')
plt.show()
# import crash
# asdf
vmin = -5.
vmax = 5.
fig, axs = plt.subplots(3,1, sharex=True)
axs[0].matshow(np.log(np.abs(mix_sp)).T, origin='lower', aspect='auto', cmap='jet', vmin=vmin, vmax=vmax)
axs[1].matshow(np.log(np.abs(clean_sp)).T, origin='lower', aspect='auto', cmap='jet', vmin=vmin, vmax=vmax)
axs[2].matshow(np.log(np.abs(enh_sp)).T, origin='lower', aspect='auto', cmap='jet', vmin=vmin, vmax=vmax)
plt.show()
def create_mixture_csv(args):
"""Create csv containing mixture information.
Each line in the .csv file contains [speech_name, noise_name, noise_onset, noise_offset]
Args:
workspace: str, path of workspace.
speech_dir: str, path of speech data.
noise_dir: str, path of noise data.
data_type: str, 'train' | 'test'.
magnification: int, only used when data_type='train', number of noise
selected to mix with a speech. E.g., when magnication=3, then 4620
speech with create 4620*3 mixtures. magnification should not larger
than the species of noises.
"""
workspace = args.workspace
speech_dir = args.speech_dir
noise_dir = args.noise_dir
interfere_dir = args.interfere_dir
data_type = args.data_type
magnification = args.magnification
fs = cfg.sample_rate
speech_names = [
na for na in os.listdir(speech_dir) if na.lower().endswith(".wav")
]
noise_names = [
na for na in os.listdir(noise_dir) if na.lower().endswith(".wav")
]
interfere_names = [
na for na in os.listdir(interfere_dir) if na.lower().endswith(".wav")
]
rs = np.random.RandomState(0)
out_csv_path = os.path.join(workspace, "mixture_csvs",
"%s.csv" % data_type)
pp_data.create_folder(os.path.dirname(out_csv_path))
cnt = 0
f = open(out_csv_path, 'w')
f.write("%s\t%s\t%s\t%s\t%s\t%s\n" %
("speech_name", "noise_name", "noise_onset", "noise_offset",
"interfere_onset", "interfere_offset"))
for speech_na in speech_names:
# Read speech.
speech_path = os.path.join(speech_dir, speech_na)
(speech_audio, _) = read_audio(speech_path, fs)
len_speech = len(speech_audio)
# For training data, mix each speech with randomly picked #magnification noises.
if data_type == 'train':
selected_noise_names = rs.choice(noise_names,
size=magnification,
replace=False)
# For test data, mix each speech with all noises.
elif data_type == 'test':
selected_noise_names = noise_names
else:
raise Exception("data_type must be train | test!")
selected_interfere_names = rs.choice(interfere_names,
size=1,
replace=False)
# Mix one speech with different noises many times.
for idx, noise_na in enumerate(selected_noise_names):
noise_path = os.path.join(noise_dir, noise_na)
(noise_audio, _) = read_audio(noise_path, fs)
interfere_path = os.path.join(interfere_dir,
selected_interfere_names[0])
interfere_audio, _ = read_audio(interfere_path, fs)
len_infer = len(interfere_audio)
if len_infer <= len_speech:
infer_onset = 0
infer_offset = len_speech
# If noise longer than speech then randomly select a segment of noise.
else:
infer_onset = rs.randint(0, len_infer - len_speech, size=1)[0]
infer_offset = infer_onset + len_speech
len_noise = len(noise_audio)
if len_noise <= len_speech:
noise_onset = 0
nosie_offset = len_speech
# If noise longer than speech then randomly select a segment of noise.
else:
noise_onset = rs.randint(0, len_noise - len_speech, size=1)[0]
nosie_offset = noise_onset + len_speech
if cnt % 100 == 0:
print cnt
cnt += 1
f.write("%s\t%s\t%s\t%d\t%d\t%d\t%d\n" %
(speech_na, noise_na, selected_interfere_names[0],
noise_onset, nosie_offset, infer_onset, infer_offset))
f.close()
print(out_csv_path)
print("Create %s mixture csv finished!" % data_type)
def create_mix_yaml(cv_path, n_events, out_path):
"""Create yaml file containing the mixture information.
"""
workspace = cfg.workspace
events = cfg.events
n_folds = cfg.n_folds
onset_list = cfg.onset_list
rs = np.random.RandomState(0)
# Read cross validation csv
cv_path = os.path.join(workspace, "cross_validation.csv")
with open(cv_path, 'rb') as f:
reader = csv.reader(f, delimiter='\t')
lis = list(reader)
yaml_data = []
cnt = 0
for tar_fold in xrange(n_folds):
for loop in xrange(n_events):
# Initialize dict
dict = {}
for e in events:
dict[e] = []
# Read all rows in cross validation csv
for i1 in xrange(1, len(lis)):
[name, fold] = lis[i1]
fold = int(fold)
if fold == tar_fold:
for e in events:
if e in name:
dict[e].append(name)
while _get_n_elements_in_dict(dict) >= n_events:
# Randomly select event files.
selected_names = []
events_pool = _get_n_largest_events(dict, n_events, rs)
selected_events = rs.choice(events_pool,
size=n_events,
replace=False)
for e in selected_events:
sel_na = rs.choice(dict[e], replace=False)
sel_na = str(sel_na)
selected_names.append(sel_na)
dict[e].remove(sel_na)
if len(dict[e]) == 0:
dict.pop(e)
# Combine yaml info.
mixture_data = {
'name': "%05d.wav" % cnt,
'fold': tar_fold,
'events': []
}
cnt += 1
for (j1, na) in enumerate(selected_names):
event_data = {
'file_name': na,
'event': re.split('(\d+)', na)[0],
'onset': onset_list[j1],
'fold': 0
}
mixture_data['events'].append(event_data)
yaml_data.append(mixture_data)
# Write out yaml file.
pp_data.create_folder(os.path.dirname(out_path))
with open(out_path, 'w') as f:
f.write(yaml.dump(yaml_data, default_flow_style=False))
print("len(yaml_file): %d" % len(yaml_data))
print("Write out to %s" % out_path)
def train(args):
"""Train the neural network. Write out model every several iterations.
Args:
workspace: str, path of workspace.
tr_snr: float, training SNR.
te_snr: float, testing SNR.
lr: float, learning rate.
"""
print(args)
workspace = args.workspace
tr_snr = args.tr_snr
te_snr = args.te_snr
lr = args.lr
# Load data.
t1 = time.time()
tr_hdf5_path = os.path.join(workspace, "packed_features", "spectrogram", "train", "%ddb" % int(tr_snr), "data.h5")
te_hdf5_path = os.path.join(workspace, "packed_features", "spectrogram", "test", "%ddb" % int(te_snr), "data.h5")
(tr_x, tr_y) = pp_data.load_hdf5(tr_hdf5_path)
(te_x, te_y) = pp_data.load_hdf5(te_hdf5_path)
print(tr_x.shape, tr_y.shape)
print(te_x.shape, te_y.shape)
print("Load data time: %s s" % (time.time() - t1,))
batch_size = 128
print("%d iterations / epoch" % int(tr_x.shape[0] / batch_size))
# Build model
_, n_freq = tr_x.shape
# encode
T = 1
data = Input(shape=[n_freq])
x = Reshape([1, T, n_freq])(data)
x1 = Conv2D(10, (T, 11), strides=(10, 1), data_format='channels_first', padding='same')(x)
x1 = BatchNormalization(axis=-1)(x1)
x1 = Activation('relu')(x1)
x2 = Conv2D(12, (T, 7), strides=(10, 1), data_format='channels_first', padding='same')(x1)
x2 = BatchNormalization(axis=-1)(x2)
x2 = Activation('relu')(x2)
x3 = Conv2D(14, (T, 5), strides=(10, 1), data_format='channels_first', padding='same')(x2)
x3 = BatchNormalization(axis=-1)(x3)
x3 = Activation('relu')(x3)
x4 = Conv2D(15, (T, 5), strides=(10, 1), data_format='channels_first', padding='same')(x3)
x4 = BatchNormalization(axis=-1)(x4)
x4 = Activation('relu')(x4)
x5 = Conv2D(19, (1, 5), strides=(10, 1), data_format='channels_first', padding='same')(x4)
x5 = BatchNormalization(axis=-1)(x5)
x5 = Activation('relu')(x5)
x6 = Conv2D(21, (1, 5), strides=(10, 1), data_format='channels_first', padding='same')(x5)
x6 = BatchNormalization(axis=-1)(x6)
x6 = Activation('relu')(x6)
x7 = Conv2D(23, (1, 7), strides=(10, 1), data_format='channels_first', padding='same')(x6)
x7 = BatchNormalization(axis=-1)(x7)
x7 = Activation('relu')(x7)
x8 = Conv2D(25, (1, 11), strides=(10, 1), data_format='channels_first', padding='same')(x7)
x8 = BatchNormalization(axis=-1)(x8)
x8 = Activation('relu')(x8)
# decode
y1 = Conv2D(23, (1, 7), strides=(10, 1), data_format='channels_first', padding='same')(x8)
y1 = Add()([y1, x7])
y1 = BatchNormalization(axis=-1)(y1)
y1 = Activation('relu')(y1)
y2 = Conv2D(21, (1, 5), strides=(10, 1), data_format='channels_first', padding='same')(y1)
y2 = Add()([y2, x6])
y2 = BatchNormalization(axis=-1)(y2)
y2 = Activation('relu')(y2)
y3 = Conv2D(19, (1, 5), strides=(10, 1), data_format='channels_first', padding='same')(y2)
y3 = Add()([y3, x5])
y3 = BatchNormalization(axis=-1)(y3)
y3 = Activation('relu')(y3)
y4 = Conv2D(15, (1, 5), strides=(10, 1), data_format='channels_first', padding='same')(y3)
y4 = Add()([y4, x4])
y4 = BatchNormalization(axis=-1)(y4)
y4 = Activation('relu')(y4)
y5 = Conv2D(14, (1, 5), strides=(10, 1), data_format='channels_first', padding='same')(y4)
y5 = Add()([y5, x3])
y5 = BatchNormalization(axis=-1)(y5)
y5 = Activation('relu')(y5)
y6 = Conv2D(12, (1, 7), strides=(10, 1), data_format='channels_first', padding='same')(y5)
y6 = Add()([y6, x2])
y6 = BatchNormalization(axis=-1)(y6)
y6 = Activation('relu')(y6)
y7 = Conv2D(10, (1, 11), strides=(10, 1), data_format='channels_first', padding='same')(y6)
y7 = Add()([y7, x1])
y7 = BatchNormalization(axis=-1)(y7)
y7 = Activation('relu')(y7)
y8 = Conv2D(1, (1, n_freq), strides=(10, 1), data_format='channels_first', padding='same')(y7)
# y5 = BatchNormalization(axis=-1)(y5)
y8 = Activation('relu')(y8)
out = Reshape([n_freq])(y8)
model = Model(inputs=data, outputs=out)
adam = optimizers.Adam(lr=lr)
model.compile(loss='mean_absolute_error', optimizer=adam)
model.summary()
# Data generator.
tr_gen = DataGenerator(batch_size=batch_size, type='train')
te_gen = DataGenerator(batch_size=batch_size, type='test', te_max_iter=200)
# Directories for saving models and training stats
model_dir = os.path.join(workspace, "models", "%ddb" % int(tr_snr))
pp_data.create_folder(model_dir)
# Train.
t1 = time.time()
model.fit_generator(tr_gen.generate(xs=[tr_x], ys=[tr_y]), validation_data=te_gen.generate(xs=[te_x], ys=[te_y]),
validation_steps=100, steps_per_epoch=200, epochs=200)
print("Training complete.")
model_name = 'FullyCNN.h5'
model_path = os.path.join(model_dir, model_name)
model.save(model_path)
print("Training time: %s s" % (time.time() - t1,))
def separate(args, bgn_iter, fin_iter, interval):
workspace = cfg.workspace
events = cfg.events
te_fold = cfg.te_fold
n_events = args.n_events
n_window = cfg.n_window
n_overlap = cfg.n_overlap
fs = cfg.sample_rate
clip_duration = cfg.clip_duration
snr = args.snr
# Load ground truth data.
feature_dir = os.path.join(workspace, "features", "logmel",
"n_events=%d" % n_events)
yaml_dir = os.path.join(workspace, "mixed_audio", "n_events=%d" % n_events)
(tr_x, tr_at_y, tr_sed_y, tr_na_list, te_x, te_at_y, te_sed_y,
te_na_list) = pp_data.load_data(feature_dir=feature_dir,
yaml_dir=yaml_dir,
te_fold=te_fold,
snr=snr,
is_scale=is_scale)
at_y = te_at_y
sed_y = te_sed_y
na_list = te_na_list
# Load and sum
preds_dir = os.path.join(workspace, "preds",
pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr)
at_probs_list, seg_masks_list = [], []
for iter in xrange(bgn_iter, fin_iter, interval):
seg_masks_path = os.path.join(preds_dir, "md%d_iters" % iter,
"seg_masks.p")
seg_masks = cPickle.load(open(seg_masks_path, 'rb'))
seg_masks_list.append(seg_masks)
seg_masks = np.mean(seg_masks_list,
axis=0) # (n_clips, n_classes, n_time, n_freq)
print(seg_masks.shape)
#
audio_dir = os.path.join(workspace, "mixed_audio",
"n_events=%d" % n_events)
sep_dir = os.path.join(workspace, "sep_audio",
pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr)
pp_data.create_folder(sep_dir)
ham_win = np.hamming(n_window)
recover_scaler = np.sqrt((ham_win**2).sum())
melW = librosa.filters.mel(sr=fs,
n_fft=n_window,
n_mels=64,
fmin=0.,
fmax=fs / 2)
inverse_melW = get_inverse_W(melW) # (64, 513)
seg_stats = {}
for e in events:
seg_stats[e] = {
'fvalue': [],
'auc': [],
'iou': [],
'hit': [],
'fa': [],
'tp': [],
'fn': [],
'fp': []
}
cnt = 0
for (i1, na) in enumerate(na_list):
bare_na = os.path.splitext(na)[0]
audio_path = os.path.join(audio_dir, "%s.wav" % bare_na)
(stereo_audio, _) = pp_data.read_stereo_audio(audio_path, target_fs=fs)
event_audio = stereo_audio[:, 0]
noise_audio = stereo_audio[:, 1]
mixed_audio = event_audio + noise_audio
mixed_cmplx_sp = pp_data.calc_sp(mixed_audio, fs, ham_win, n_window,
n_overlap)
mixed_sp = np.abs(mixed_cmplx_sp)
event_sp = np.abs(
pp_data.calc_sp(event_audio, fs, ham_win, n_window, n_overlap))
noise_sp = np.abs(
pp_data.calc_sp(noise_audio, fs, ham_win, n_window, n_overlap))
sm = seg_masks[i1] # (n_classes, n_time, n_freq)
sm_upsampled = np.dot(sm, inverse_melW) # (n_classes, n_time, 513)
print(na)
# Write out separated events.
for j1 in xrange(len(events)):
if at_y[i1][j1] == 1:
(fvalue, auc, iou, tp, fn, fp) = fvalue_iou(sm_upsampled[j1],
event_sp,
noise_sp,
sed_y[i1, :, j1],
seg_thres,
inside_only=True)
(hit, fa) = hit_fa(sm_upsampled[j1],
event_sp,
noise_sp,
sed_y[i1, :, j1],
seg_thres,
inside_only=True)
seg_stats[events[j1]]['fvalue'].append(fvalue)
seg_stats[events[j1]]['auc'].append(auc)
seg_stats[events[j1]]['iou'].append(iou)
seg_stats[events[j1]]['hit'].append(hit)
seg_stats[events[j1]]['fa'].append(fa)
seg_stats[events[j1]]['tp'].append(tp)
seg_stats[events[j1]]['fn'].append(fn)
seg_stats[events[j1]]['fp'].append(fp)
sep_event_sp = sm_upsampled[j1] * mixed_sp
sep_event_s = spectrogram_to_wave.recover_wav(
sep_event_sp,
mixed_cmplx_sp,
n_overlap=n_overlap,
winfunc=np.hamming,
wav_len=int(fs * clip_duration))
sep_event_s *= recover_scaler
out_event_audio_path = os.path.join(
sep_dir, "%s.%s.wav" % (bare_na, events[j1]))
pp_data.write_audio(out_event_audio_path, sep_event_s, fs)
# Write out separated noise.
sm_noise_upsampled = np.clip(1. - np.sum(sm_upsampled, axis=0), 0., 1.)
sep_noise_sp = sm_noise_upsampled * mixed_sp
sep_noise_s = spectrogram_to_wave.recover_wav(sep_noise_sp,
mixed_cmplx_sp,
n_overlap=n_overlap,
winfunc=np.hamming,
wav_len=int(
fs * clip_duration))
sep_noise_s *= recover_scaler
out_noise_audio_path = os.path.join(sep_dir, "%s.noise.wav" % bare_na)
pp_data.write_audio(out_noise_audio_path, sep_noise_s, fs)
cnt += 1
# if cnt == 2: break
fvalues, aucs, ious, hits, fas, tps, fns, fps = [], [], [], [], [], [], [], []
for e in events:
fvalues.append(np.mean(seg_stats[e]['fvalue']))
ious.append(np.mean(seg_stats[e]['iou']))
aucs.append(np.mean(seg_stats[e]['auc']))
hits.append(np.mean(seg_stats[e]['hit']))
fas.append(np.mean(seg_stats[e]['fa']))
tps.append(np.mean(seg_stats[e]['tp']))
fns.append(np.mean(seg_stats[e]['fn']))
fps.append(np.mean(seg_stats[e]['fp']))
logging.info("%sfvalue\tauc\tiou\tHit\tFa\tHit-Fa\tTP\tFN\tFP" %
("".ljust(16)))
logging.info(
"%s*%.3f\t*%.3f\t*%.3f\t*%.3f\t*%.3f\t*%.3f\t*%.3f\t*%.3f\t*%.3f" %
("*Avg. of each".ljust(16), np.mean(fvalues), np.mean(aucs),
np.mean(ious), np.mean(hits), np.mean(fas), np.mean(hits) -
np.mean(fas), np.mean(tps), np.mean(fns), np.mean(fps)))
for i1 in xrange(len(events)):
logging.info(
"%s%.3f\t%.3f\t%.3f\t%.3f\t%.3f\t%.3f\t%.3f\t%.3f\t%.3f" %
(events[i1].ljust(16), fvalues[i1], aucs[i1], ious[i1], hits[i1],
fas[i1], hits[i1] - fas[i1], tps[i1], fns[i1], fps[i1]))
pp.write_audio(clean_path, clean_new, conf1.fs)
clean_spec = pp.calc_sp(clean_new, mode='magnitude')
mixed_spec = pp.calc_sp(mixed, mode='complex')
clean_all.append(clean_spec)
mixed_all.append(mixed_spec)
print(len(clean_all), ',', len(mixed_all))
num_te = pp.pack_features(mixed_all, clean_all, 'test')
compute_scaler('test')
return num_tr, num_te,
get_gpu()
pp.create_folder(conf1.train_folder)
pp.create_folder(conf1.test_folder)
pp.create_folder(conf1.packed_feature_dir)
pp.create_folder(conf1.data_train_dir)
pp.create_folder(conf1.data_test_dir)
pp.create_folder(conf1.logs)
pp.create_folder(conf1.model_dir)
pp.create_folder(conf1.stats_dir)
t1 = time.time()
num_tr, num_te = prepare_database()
def train(args):
workspace = cfg.workspace
te_fold = cfg.te_fold
n_events = args.n_events
snr = args.snr
feature_dir = os.path.join(workspace, "features", "logmel",
"n_events=%d" % n_events)
yaml_dir = os.path.join(workspace, "mixed_audio", "n_events=%d" % n_events)
(tr_x, tr_at_y, tr_sed_y, tr_na_list, te_x, te_at_y, te_sed_y,
te_na_list) = pp_data.load_data(feature_dir=feature_dir,
yaml_dir=yaml_dir,
te_fold=te_fold,
snr=snr,
is_scale=is_scale)
print(tr_x.shape, tr_at_y.shape)
print(te_x.shape, te_at_y.shape)
(_, n_time, n_freq) = tr_x.shape
n_out = len(cfg.events)
if False:
for e in tr_x:
plt.matshow(e.T, origin='lower', aspect='auto')
plt.show()
# Build model.
lay_in = InputLayer(in_shape=(n_time, n_freq))
a = Reshape((1, n_time, n_freq))(lay_in)
a = Conv2D(n_outfmaps=64,
n_row=3,
n_col=5,
act='linear',
strides=(1, 1),
border_mode=(1, 2))(a)
a = BN(axis=(0, 2, 3))(a)
a = Activation('relu')(a)
a = Conv2D(n_outfmaps=64,
n_row=3,
n_col=5,
act='linear',
strides=(1, 1),
border_mode=(1, 2))(a)
a = BN(axis=(0, 2, 3))(a)
a = Activation('relu')(a)
a = Dropout(p_drop=0.2)(a)
a = Conv2D(n_outfmaps=64,
n_row=3,
n_col=5,
act='linear',
strides=(1, 1),
border_mode=(1, 2))(a)
a = BN(axis=(0, 2, 3))(a)
a = Activation('relu')(a)
a = Conv2D(n_outfmaps=64,
n_row=3,
n_col=5,
act='linear',
strides=(1, 1),
border_mode=(1, 2))(a)
a = BN(axis=(0, 2, 3))(a)
a = Activation('relu')(a)
a = Dropout(p_drop=0.2)(a)
a = Conv2D(n_outfmaps=64,
n_row=3,
n_col=5,
act='linear',
strides=(1, 1),
border_mode=(1, 2))(a)
a = BN(axis=(0, 2, 3))(a)
a = Activation('relu')(a)
a = Conv2D(n_outfmaps=64,
n_row=3,
n_col=5,
act='linear',
strides=(1, 1),
border_mode=(1, 2))(a)
a = BN(axis=(0, 2, 3))(a)
a = Activation('relu')(a)
a = Dropout(p_drop=0.2)(a)
a = Conv2D(n_outfmaps=n_out,
n_row=1,
n_col=1,
act='sigmoid',
border_mode=(0, 0),
name='seg_masks')(a)
a8 = Lambda(_global_avg_pooling, name='a8')(a)
md = Model([lay_in], [a8])
md.compile()
md.summary(is_logging=True)
# Callbacks.
md_dir = os.path.join(workspace, "models", pp_data.get_filename(__file__),
"n_events=%d" % n_events, "fold=%d" % te_fold,
"snr=%d" % snr)
pp_data.create_folder(md_dir)
save_model = SaveModel(md_dir, call_freq=50, type='iter', is_logging=True)
validation = Validation(te_x=te_x,
te_y=te_at_y,
batch_size=50,
call_freq=50,
metrics=['binary_crossentropy'],
dump_path=None,
is_logging=True)
callbacks = [save_model, validation]
observe_nodes = [md.find_layer('seg_masks').output_]
f_forward = md.get_observe_forward_func(observe_nodes)
# Generator.
tr_gen = DataGenerator(batch_size=32, type='train')
eva_gen = DataGenerator2(batch_size=32, type='test')
# Train.
loss_ary = []
t1 = time.time()
optimizer = Adam(1e-3)
for (batch_x, batch_y) in tr_gen.generate(xs=[tr_x], ys=[tr_at_y]):
if md.iter_ % 50 == 0:
logging.info("iter: %d tr_loss: %f time: %s" % (
md.iter_,
np.mean(loss_ary),
time.time() - t1,
))
t1 = time.time()
loss_ary = []
# if md.iter_ % 200 == 0:
# write_out_at_sed(md, eva_gen, f_forward, te_x, te_at_y, te_sed_y, n_events, snr, te_fold)
if md.iter_ == 5001:
break
loss = md.train_on_batch(batch_x,
batch_y,
loss_func='binary_crossentropy',
optimizer=optimizer,
callbacks=callbacks)
loss_ary.append(loss)
parser_get_sep_stats.add_argument('--n_events', type=int)
parser_get_sep_stats.add_argument('--snr', type=int)
parser_b2 = subparsers.add_parser('avg_recognize')
parser_b2.add_argument('--n_events', type=int)
parser_b2.add_argument('--snr', type=int)
parser_c = subparsers.add_parser('plot_hotmap')
parser_c.add_argument('--model_name', type=str)
parser_c.add_argument('--n_events', type=int)
args = parser.parse_args()
logs_dir = os.path.join(cfg.workspace, "logs",
pp_data.get_filename(__file__))
pp_data.create_folder(logs_dir)
logging = pp_data.create_logging(logs_dir, filemode='w')
logging.info(os.path.abspath(__file__))
logging.info(sys.argv)
if args.mode == "train":
train(args)
elif args.mode == "recognize":
recognize(args)
elif args.mode == "get_stats":
bgn_iter, fin_iter, interval = 2000, 3001, 200
get_stats(args, bgn_iter, fin_iter, interval)
elif args.mode == "separate":
bgn_iter, fin_iter, interval = 2000, 3001, 200
separate(args, bgn_iter, fin_iter, interval)
elif args.mode == "evaluate_separation":
def train(args):
num_classes = cfg.num_classes
# Load training & testing data
(tr_x, tr_y, tr_na_list) = load_hdf5_data(args.tr_hdf5_path, verbose=1)
(te_x, te_y, te_na_list) = load_hdf5_data(args.te_hdf5_path, verbose=1)
print("tr_x.shape: %s" % (tr_x.shape,))#removed this dec4 since its not helpful really
# Scale data
tr_x = do_scale(tr_x, args.scaler_path, verbose=1)
te_x = do_scale(te_x, args.scaler_path, verbose=1)
#print("delme dec 1, tr_x.shape", tr_x.shape)#output=51, 240, 64
#print("delme dec 1, te_x.shape", te_x.shape)#:51, 240, 64
# Build model
(_, n_time, n_freq) = tr_x.shape # (N, 240, 64)
input_logmel = Input(shape=(n_time, n_freq), name='in_layer') # (N, 240, 64)
a1 = Reshape((n_time, n_freq, 1))(input_logmel) # (N, 240, 64, 1)
a1 = block(a1)
a1 = block(a1)
a1 = MaxPooling2D(pool_size=(1, 2))(a1) # (N, 240, 32, 128)
a1 = block(a1)
a1 = block(a1)
a1 = MaxPooling2D(pool_size=(1, 2))(a1) # (N, 240, 16, 128)
a1 = block(a1)
a1 = block(a1)
a1 = MaxPooling2D(pool_size=(1, 2))(a1) # (N, 240, 8, 128)
a1 = block(a1)
a1 = block(a1)
a1 = MaxPooling2D(pool_size=(1, 2))(a1) # (N, 240, 4, 128)
a1 = Conv2D(256, (3, 3), padding="same", activation="relu", use_bias=True)(a1)
a1 = MaxPooling2D(pool_size=(1, 4))(a1) # (N, 240, 1, 256)
a1 = Reshape((240, 256))(a1) # (N, 240, 256)
# Gated BGRU
rnnout = Bidirectional(GRU(128, activation='linear', return_sequences=True))(a1)
rnnout_gate = Bidirectional(GRU(128, activation='sigmoid', return_sequences=True))(a1)
a2 = Multiply()([rnnout, rnnout_gate])
# Attention
cla = TimeDistributed(Dense(num_classes, activation='sigmoid'), name='localization_layer')(a2)
att = TimeDistributed(Dense(num_classes, activation='softmax'))(a2)
out = Lambda(outfunc, output_shape=(num_classes,))([cla, att])
model = Model(input_logmel, out)
model.summary()
adam_optimizer = keras.optimizers.Adam(lr=0.001, beta_1=0.9, beta_2=0.999, epsilon=None, decay=0.0, amsgrad=False)
# Compile model
model.compile(loss='binary_crossentropy',
optimizer=adam_optimizer,
metrics=['accuracy'])#finn delme dec1 you can change this to categorical_accuracy to see if you can subvert the keras error. However you dont know if its the right hting to do. Keep a look out at the results to determineif it did what you wanted
# Save model callback
print("working here 1")
filepath = os.path.join(args.out_model_dir, "{0}_{1}.hdf5".format(args.model_name, args.epochs))
create_folder(os.path.dirname(filepath))
save_model = ModelCheckpoint(filepath=filepath,
monitor='val_acc',
verbose=0,
save_best_only=False,
save_weights_only=False,
mode='auto',
period=1)
# Data generator
# Train
t_train = time.time()
print("FINN Training started")#this is really just me seeing if this is where most of the time is spent
use_generator = False
if use_generator:
gen = RatioDataGenerator(batch_size=args.batch_size, type='train')#batch size should be manipulated from 44
model.fit_generator(generator=gen.generate([tr_x], [tr_y]),
steps_per_epoch=args.steps_p_epoch, # 100 iters is called an 'epoch'
epochs=args.epochs, #31 # Maximum 'epoch' to train
verbose=1,
callbacks=[save_model],
validation_data=(te_x, te_y))
else:
model.fit(x=tr_x, y=tr_y, batch_size=20, epochs=args.epochs, verbose=1, callbacks=[save_model], validation_split=0.05, shuffle=True, class_weight=None, sample_weight=None, initial_epoch=args.init_epoch, steps_per_epoch=None, validation_steps=None)
model.save(os.path.join(args.out_model_dir, "final_model_{}_{}epochs.h5".format(args.model_name, args.epochs)))#am not sure if fit will save the final epoch.. pretty sure it does tho
print("FINN Training finished, time taken: ", (time.time()-t_train))#this is really just me seeing if this is where most of the time is spent
def train(args):
"""Train the neural network. Write out model every several iterations.
Args:
workspace: str, path of workspace.
tr_snr: float, training SNR.
te_snr: float, testing SNR.
lr: float, learning rate.
"""
print(args)
workspace = args.workspace
tr_snr = args.tr_snr
te_snr = args.te_snr
lr = args.lr
iteration = args.iter
# Load data.
t1 = time.time()
tr_hdf5_path = os.path.join(workspace, "packed_features", "spectrogram",
"train", "%ddb" % int(tr_snr), "data.h5")
te_hdf5_path = os.path.join(workspace, "packed_features", "spectrogram",
"test", "%ddb" % int(te_snr), "data.h5")
(tr_x1, tr_x2, tr_y1, tr_y2) = pp_data.load_hdf5(tr_hdf5_path)
(te_x1, te_x2, te_y1, te_y2) = pp_data.load_hdf5(te_hdf5_path)
print(tr_x1.shape, tr_y1.shape, tr_x2.shape, tr_y2.shape)
print(te_x1.shape, te_y1.shape, te_x2.shape, te_y2.shape)
print("Load data time: %s s" % (time.time() - t1, ))
batch_size = 500
print("%d iterations / epoch" % int(tr_x1.shape[0] / batch_size))
# Scale data.
if not True:
t1 = time.time()
scaler_path = os.path.join(workspace, "packed_features", "spectrogram",
"train", "%ddb" % int(tr_snr), "scaler.p")
scaler = pickle.load(open(scaler_path, 'rb'))
tr_x1 = pp_data.scale_on_3d(tr_x1, scaler)
tr_y1 = pp_data.scale_on_2d(tr_y1, scaler)
te_x1 = pp_data.scale_on_3d(te_x1, scaler)
te_y1 = pp_data.scale_on_2d(te_y1, scaler)
tr_x2 = pp_data.scale_on_2d(tr_x2, scaler)
tr_y2 = pp_data.scale_on_2d(tr_y2, scaler)
te_x2 = pp_data.scale_on_2d(te_x2, scaler)
te_y2 = pp_data.scale_on_2d(te_y2, scaler)
print("Scale data time: %s s" % (time.time() - t1, ))
# Debug plot.
if False:
plt.matshow(tr_x[0:1000, 0, :].T,
origin='lower',
aspect='auto',
cmap='jet')
plt.show()
pause
# Build model
(_, n_concat, n_freq) = tr_x1.shape
n_hid = 2048
input_dim1 = (257 + 40 + 30) * 2
input_dim2 = (257 + 40 + 30)
out_dim1 = (257 + 40 + 30) * 2
out_dim1_irm = 257 + 40 + 64
out_dim2 = (257 + 40 + 30)
out_dim2_irm = (257 + 40 + 64)
# model = Sequential()
# model.add(Flatten(input_shape=(n_concat, n_freq)))
# model.add(Dense(n_hid, activation='relu'))
# model.add(Dropout(0.2))
# model.add(Dense(n_hid, activation='relu'))
# model.add(Dropout(0.2))
# model.add(Dense(n_hid, activation='relu'))
# model.add(Dropout(0.2))
# model.add(Dense(n_freq, activation='linear'))
input1 = Input(shape=(n_concat, input_dim1), name='input1')
layer = Flatten(name='flatten')(input1)
layer = Dense(n_hid, activation='relu', name='dense1')(layer)
layer = Dropout(0.2)(layer)
layer = Dense(n_hid, activation='relu', name='dense2')(layer)
layer = Dropout(0.2)(layer)
partial_out1 = Dense(out_dim1, name='1_out_linear')(layer)
partial_out1_irm = Dense(out_dim1_irm,
name='1_out_irm',
activation='sigmoid')(layer)
out1 = concatenate([partial_out1, partial_out1_irm], name='out1')
input2 = Input(shape=(input_dim2, ), name='input2')
layer = concatenate([input2, out1], name='merge')
layer = Dense(n_hid, activation='relu', name='dense3')(layer)
layer = Dropout(0.2)(layer)
layer = Dense(n_hid, activation='relu', name='dense4')(layer)
layer = Dropout(0.2)(layer)
partial_out2 = Dense(out_dim2, name='2_out_linear')(layer)
partial_out2_irm = Dense(out_dim2_irm,
name='2_out_irm',
activation='sigmoid')(layer)
out2 = concatenate([partial_out2, partial_out2_irm], name='out2')
model = Model(inputs=[input1, input2], outputs=[out1, out2])
model.summary()
sys.stdout.flush()
model.compile(loss='mean_absolute_error',
optimizer=Adam(lr=lr, epsilon=1e-03))
# Data generator.
tr_gen = DataGenerator(batch_size=batch_size, type='train')
eval_te_gen = DataGenerator(batch_size=batch_size,
type='test',
te_max_iter=100)
eval_tr_gen = DataGenerator(batch_size=batch_size,
type='test',
te_max_iter=100)
# Directories for saving models and training stats
model_dir = os.path.join(workspace, "models", "%ddb" % int(tr_snr))
pp_data.create_folder(model_dir)
stats_dir = os.path.join(workspace, "training_stats", "%ddb" % int(tr_snr))
pp_data.create_folder(stats_dir)
# Print loss before training.
iter = 0
tr_loss = eval(model, eval_tr_gen, tr_x1, tr_x2, tr_y1, tr_y2)
te_loss = eval(model, eval_te_gen, te_x1, te_x2, te_y1, te_y2)
print("Iteration: %d, tr_loss: %f, te_loss: %f" % (iter, tr_loss, te_loss))
# Save out training stats.
stat_dict = {
'iter': iter,
'tr_loss': tr_loss,
'te_loss': te_loss,
}
stat_path = os.path.join(stats_dir, "%diters.p" % iter)
cPickle.dump(stat_dict,
open(stat_path, 'wb'),
protocol=cPickle.HIGHEST_PROTOCOL)
# Train.
t1 = time.time()
for (batch_x, batch_y) in tr_gen.generate(xs=[tr_x1, tr_x2],
ys=[tr_y1, tr_y2]):
loss = model.train_on_batch(batch_x, batch_y)
iter += 1
# Validate and save training stats.
if iter % 100 == 0:
tr_loss = eval(model, eval_tr_gen, tr_x1, tr_x2, tr_y1, tr_y2)
te_loss = eval(model, eval_te_gen, te_x1, te_x2, te_y1, te_y2)
print("Iteration: %d, tr_loss: %f, te_loss: %f" %
(iter, tr_loss, te_loss))
sys.stdout.flush()
# Save out training stats.
stat_dict = {
'iter': iter,
'tr_loss': tr_loss,
'te_loss': te_loss,
}
stat_path = os.path.join(stats_dir, "%diters.p" % iter)
cPickle.dump(stat_dict,
open(stat_path, 'wb'),
protocol=cPickle.HIGHEST_PROTOCOL)
# Save model.
if iter % (iteration / 20) == 0:
model_path = os.path.join(model_dir, "md_%diters.h5" % iter)
model.save(model_path)
print("Saved model to %s" % model_path)
if iter == iteration + 1:
break
print("Training time: %s s" % (time.time() - t1, ))
def train(args):
workspace = args.workspace
audio_type = args.audio_type
stack_num = args.stack_num
hop_frames = args.hop_frames
filename = args.filename
cuda = args.use_cuda and torch.cuda.is_available()
fft_size = cfg.fft_size
print("cuda:", cuda)
hdf5_file = os.path.join(args.workspace, "features",
"cmplx_spectrogram.h5")
data_type = 'train'
t1 = time.time()
batch_size = 500
shuffle = False
load_raw = False
data_loader = pp_data.DataLoader(hdf5_file,
data_type,
audio_type,
stack_num,
hop_frames,
center_only=True,
batch_size=batch_size,
shuffle=shuffle,
load_raw=load_raw)
eval_tr_data_loader = pp_data.DataLoader(hdf5_file,
'train',
audio_type,
stack_num,
hop_frames,
center_only=True,
batch_size=batch_size,
shuffle=shuffle,
load_raw=load_raw)
eval_te_data_loader = pp_data.DataLoader(hdf5_file,
'test',
audio_type,
stack_num,
hop_frames,
center_only=True,
batch_size=batch_size,
shuffle=shuffle,
load_raw=load_raw)
print("Load time: %s" % (time.time() - t1))
# Load scalar
scalar_path = os.path.join(workspace, "scalars", filename, "scalar.p")
(mean_, std_) = cPickle.load(open(scalar_path, 'rb'))
mean_ = move_data_to_gpu(mean_, cuda)
std_ = move_data_to_gpu(std_, cuda)
# Model
n_freq = 257
model = DNN(stack_num, n_freq)
if cuda:
model.cuda()
dft = pp_data.DFT(fft_size, cuda)
# Optimizer
optimizer = optim.Adam(model.parameters(),
lr=1e-4,
betas=(0.9, 0.999),
eps=1e-08,
weight_decay=0)
# Train
iter = 0
model_dir = os.path.join(workspace, "models", filename, audio_type)
pp_data.create_folder(model_dir)
t_train = time.time()
for (batch_x, batch_y) in data_loader.generate():
output = forward(model, batch_x, mean_, std_, dft, cuda)
batch_y = np.abs(batch_y)
batch_y = move_data_to_gpu(batch_y, cuda)
# batch_y = transform(batch_y, type='torch')
# batch_y = pp_data.scale(batch_y, mean_, std_)
loss = mse_loss(output, batch_y)
# Backward
optimizer.zero_grad()
loss.backward()
optimizer.step()
iter += 1
# Evaluate.
loss_ary = []
if iter % 500 == 0:
t_eval = time.time()
tr_loss = evaluate(model, eval_tr_data_loader, mean_, std_, dft,
cuda)
# tr_loss = -1
te_loss = evaluate(model, eval_te_data_loader, mean_, std_, dft,
cuda)
print("Iter: %d, train err: %f, test err: %f, train time: %s, eval time: %s" % \
(iter, tr_loss, te_loss, time.time() - t_train, time.time() - t_eval))
t_train = time.time()
# Save model.
if iter % 5000 == 0:
save_out_dict = {
'iter': iter,
'state_dict': model.state_dict(),
'optimizer': optimizer.state_dict(),
'te_loss': loss,
}
save_out_path = os.path.join(model_dir, "md_%d_iters.tar" % iter)
torch.save(save_out_dict, save_out_path)
print("Save model to %s" % save_out_path)
t1 = time.time()