class VideoAudioGenerator(nn.Module):
def __init__(self,
dim_neck,
dim_emb,
dim_pre,
freq,
dim_spec=80,
is_train=False,
lr=0.001,
multigpu=False,
lambda_wavenet=0.001,
args=None,
residual=False,
attention_map=None,
use_256=False,
loss_content=False,
test_path=None):
super(VideoAudioGenerator, self).__init__()
self.encoder = MyEncoder(dim_neck, freq, num_mel=dim_spec)
self.decoder = Decoder(dim_neck, 0, dim_pre, num_mel=dim_spec)
self.postnet = Postnet(num_mel=dim_spec)
if use_256:
self.video_decoder = VideoGenerator(use_256=True)
else:
self.video_decoder = STAGE2_G(residual=residual)
self.use_256 = use_256
self.lambda_wavenet = lambda_wavenet
self.loss_content = loss_content
self.multigpu = multigpu
self.test_path = test_path
self.vocoder = WaveRNN(rnn_dims=hparams.voc_rnn_dims,
fc_dims=hparams.voc_fc_dims,
bits=hparams.bits,
pad=hparams.voc_pad,
upsample_factors=hparams.voc_upsample_factors,
feat_dims=hparams.num_mels,
compute_dims=hparams.voc_compute_dims,
res_out_dims=hparams.voc_res_out_dims,
res_blocks=hparams.voc_res_blocks,
hop_length=hparams.hop_size,
sample_rate=hparams.sample_rate,
mode=hparams.voc_mode)
if is_train:
self.criterionIdt = torch.nn.L1Loss(reduction='mean')
self.opt_encoder = torch.optim.Adam(self.encoder.parameters(),
lr=lr)
self.opt_decoder = torch.optim.Adam(itertools.chain(
self.decoder.parameters(), self.postnet.parameters()),
lr=lr)
self.opt_video_decoder = torch.optim.Adam(
self.video_decoder.parameters(), lr=lr)
self.opt_vocoder = torch.optim.Adam(self.vocoder.parameters(),
lr=hparams.voc_lr)
self.vocoder_loss_func = F.cross_entropy # Only for RAW
if multigpu:
self.encoder = nn.DataParallel(self.encoder)
self.decoder = nn.DataParallel(self.decoder)
self.video_decoder = nn.DataParallel(self.video_decoder)
self.postnet = nn.DataParallel(self.postnet)
self.vocoder = nn.DataParallel(self.vocoder)
def optimize_parameters_video(self,
dataloader,
epochs,
device,
display_freq=10,
save_freq=1000,
save_dir="./",
experimentName="Train",
initial_niter=0,
load_model=None):
writer = SummaryWriter(log_dir="logs/" + experimentName)
if load_model is not None:
print("Loading from %s..." % load_model)
# self.load_state_dict(torch.load(load_model))
d = torch.load(load_model)
newdict = d.copy()
for key, value in d.items():
newkey = key
if 'wavenet' in key:
newdict[key.replace('wavenet',
'vocoder')] = newdict.pop(key)
newkey = key.replace('wavenet', 'vocoder')
if self.multigpu and 'module' not in key:
newdict[newkey.replace('.', '.module.',
1)] = newdict.pop(newkey)
newkey = newkey.replace('.', '.module.', 1)
if newkey not in self.state_dict():
newdict.pop(newkey)
print("Load " + str(len(newdict)) + " parameters!")
self.load_state_dict(newdict, strict=False)
print("AutoVC Model Loaded")
niter = initial_niter
for epoch in range(epochs):
self.train()
for i, data in enumerate(dataloader):
# print("Processing ..." + str(name))
speaker, mel, prev, wav, video, video_large = data
speaker, mel, prev, wav, video, video_large = speaker.to(
device), mel.to(device), prev.to(device), wav.to(
device), video.to(device), video_large.to(device)
codes, code_unsample = self.encoder(mel,
speaker,
return_unsample=True)
tmp = []
for code in codes:
tmp.append(
code.unsqueeze(1).expand(-1,
int(mel.size(1) / len(codes)),
-1))
code_exp = torch.cat(tmp, dim=1)
if not self.use_256:
v_stage1, v_stage2 = self.video_decoder(code_unsample,
train=True)
else:
v_stage2 = self.video_decoder(code_unsample)
mel_outputs = self.decoder(code_exp)
mel_outputs_postnet = self.postnet(mel_outputs.transpose(2, 1))
mel_outputs_postnet = mel_outputs + mel_outputs_postnet.transpose(
2, 1)
if self.loss_content:
_, recons_codes = self.encoder(mel_outputs_postnet,
speaker,
return_unsample=True)
loss_content = self.criterionIdt(code_unsample,
recons_codes)
else:
loss_content = torch.from_numpy(np.array(0))
if not self.use_256:
loss_video = self.criterionIdt(v_stage1,
video) + self.criterionIdt(
v_stage2, video_large)
else:
loss_video = self.criterionIdt(v_stage2, video_large)
loss_recon = self.criterionIdt(mel, mel_outputs)
loss_recon0 = self.criterionIdt(mel, mel_outputs_postnet)
loss_vocoder = 0
if not self.multigpu:
y_hat = self.vocoder(
prev,
self.vocoder.pad_tensor(mel_outputs_postnet,
hparams.voc_pad).transpose(
1, 2))
else:
y_hat = self.vocoder(
prev,
self.vocoder.module.pad_tensor(
mel_outputs_postnet,
hparams.voc_pad).transpose(1, 2))
y_hat = y_hat.transpose(1, 2).unsqueeze(-1)
# assert (0 <= wav < 2 ** 9).all()
loss_vocoder = self.vocoder_loss_func(
y_hat,
wav.unsqueeze(-1).to(device))
self.opt_vocoder.zero_grad()
loss = loss_video + loss_recon + loss_recon0 + self.lambda_wavenet * loss_vocoder + loss_content
self.opt_encoder.zero_grad()
self.opt_decoder.zero_grad()
self.opt_video_decoder.zero_grad()
loss.backward()
self.opt_encoder.step()
self.opt_decoder.step()
self.opt_video_decoder.step()
self.opt_vocoder.step()
if niter % display_freq == 0:
print("Epoch[%d] Iter[%d] Niter[%d] %s" %
(epoch, i, niter, loss.data.item()))
writer.add_scalars(
'data/Loss', {
'loss':
loss.data.item(),
'loss_video':
loss_video.data.item(),
'loss_audio':
loss_recon0.data.item() + loss_recon.data.item()
}, niter)
if niter % save_freq == 0:
torch.cuda.empty_cache() # Prevent Out of Memory
print("Saving and Testing...", end='\t')
torch.save(
self.state_dict(),
save_dir + '/Epoch' + str(epoch).zfill(3) + '_Iter' +
str(niter).zfill(8) + ".pkl")
# self.load_state_dict(torch.load('params.pkl'))
self.test_audiovideo(device, writer, niter)
print("Done")
self.train()
torch.cuda.empty_cache() # Prevent Out of Memory
niter += 1
def generate(self, mel, speaker, device='cuda:0'):
mel, speaker = mel.to(device), speaker.to(device)
if not self.multigpu:
codes, code_unsample = self.encoder(mel,
speaker,
return_unsample=True)
else:
codes, code_unsample = self.encoder.module(mel,
speaker,
return_unsample=True)
tmp = []
for code in codes:
tmp.append(
code.unsqueeze(1).expand(-1, int(mel.size(1) / len(codes)),
-1))
code_exp = torch.cat(tmp, dim=1)
if not self.multigpu:
if not self.use_256:
v_stage1, v_stage2 = self.video_decoder(code_unsample,
train=True)
else:
v_stage2 = self.video_decoder(code_unsample)
v_stage1 = v_stage2
mel_outputs = self.decoder(code_exp)
mel_outputs_postnet = self.postnet(mel_outputs.transpose(2, 1))
else:
if not self.use_256:
v_stage1, v_stage2 = self.video_decoder.module(code_unsample,
train=True)
else:
v_stage2 = self.video_decoder.module(code_unsample)
v_stage1 = v_stage2
mel_outputs = self.decoder.module(code_exp)
mel_outputs_postnet = self.postnet.module(
mel_outputs.transpose(2, 1))
mel_outputs_postnet = mel_outputs + mel_outputs_postnet.transpose(2, 1)
return mel_outputs_postnet, v_stage1, v_stage2
def test_video(self, device):
wav, sr = librosa.load(
"/mnt/lustre/dengkangle/cmu/datasets/video/obama_test.mp4",
hparams.sample_rate)
mel_basis = librosa.filters.mel(hparams.sample_rate,
hparams.n_fft,
n_mels=hparams.num_mels)
linear_spec = np.abs(
librosa.stft(wav,
n_fft=hparams.n_fft,
hop_length=hparams.hop_size,
win_length=hparams.win_size))
mel_spec = mel_basis.dot(linear_spec)
mel_db = 20 * np.log10(mel_spec)
test_data = np.clip((mel_db + 120) / 125, 0, 1)
test_data = torch.Tensor(pad_seq(test_data.T,
hparams.freq)).unsqueeze(0).to(device)
with torch.no_grad():
codes, code_exp = self.encoder.module(test_data,
return_unsample=True)
v_mid, v_hat = self.video_decoder.module(code_exp, train=True)
reader = imageio.get_reader(
"/mnt/lustre/dengkangle/cmu/datasets/video/obama_test.mp4",
'ffmpeg',
fps=20)
frames = []
for i, im in enumerate(reader):
frames.append(np.array(im).transpose(2, 0, 1))
frames = (np.array(frames) / 255 - 0.5) / 0.5
return frames, v_mid[0:1], v_hat[0:1]
def test_audiovideo(self, device, writer, niter):
source_path = self.test_path
mel_basis80 = librosa.filters.mel(hparams.sample_rate,
hparams.n_fft,
n_mels=80)
wav, sr = librosa.load(source_path, hparams.sample_rate)
wav = preemphasis(wav, hparams.preemphasis, hparams.preemphasize)
linear_spec = np.abs(
librosa.stft(wav,
n_fft=hparams.n_fft,
hop_length=hparams.hop_size,
win_length=hparams.win_size))
mel_spec = mel_basis80.dot(linear_spec)
mel_db = 20 * np.log10(mel_spec)
source_spec = np.clip((mel_db + 120) / 125, 0, 1)
source_embed = torch.from_numpy(np.array([0, 1])).float().unsqueeze(0)
source_wav = wav
source_spec = torch.Tensor(pad_seq(source_spec.T,
hparams.freq)).unsqueeze(0)
# print(source_spec.shape)
with torch.no_grad():
generated_spec, v_mid, v_hat = self.generate(
source_spec, source_embed, device)
generated_spec, v_mid, v_hat = generated_spec.cpu(), v_mid.cpu(
), v_hat.cpu()
print("Generating Wavfile...")
with torch.no_grad():
if not self.multigpu:
generated_wav = inv_preemphasis(
self.vocoder.generate(generated_spec.to(device).transpose(
2, 1),
False,
None,
None,
mu_law=True), hparams.preemphasis,
hparams.preemphasize)
else:
generated_wav = inv_preemphasis(
self.vocoder.module.generate(
generated_spec.to(device).transpose(2, 1),
False,
None,
None,
mu_law=True), hparams.preemphasis,
hparams.preemphasize)
writer.add_video('generated', (v_hat.numpy() + 1) / 2,
global_step=niter)
writer.add_video('mid', (v_mid.numpy() + 1) / 2, global_step=niter)
writer.add_audio('ground_truth',
source_wav,
niter,
sample_rate=hparams.sample_rate)
writer.add_audio('generated_wav',
generated_wav,
niter,
sample_rate=hparams.sample_rate)
class Generator(nn.Module):
"""Generator network."""
def __init__(self,
dim_neck,
dim_emb,
dim_pre,
freq,
dim_spec=80,
is_train=False,
lr=0.001,
loss_content=True,
discriminator=False,
multigpu=False,
lambda_gan=0.0001,
lambda_wavenet=0.001,
args=None,
test_path_source=None,
test_path_target=None):
super(Generator, self).__init__()
self.encoder = MyEncoder(dim_neck, freq, num_mel=dim_spec)
self.decoder = Decoder(dim_neck, 0, dim_pre, num_mel=dim_spec)
self.postnet = Postnet(num_mel=dim_spec)
if discriminator:
self.dis = PatchDiscriminator(n_class=num_speakers)
self.dis_criterion = GANLoss(use_lsgan=use_lsgan,
tensor=torch.cuda.FloatTensor)
else:
self.dis = None
self.loss_content = loss_content
self.lambda_gan = lambda_gan
self.lambda_wavenet = lambda_wavenet
self.multigpu = multigpu
self.prepare_test(dim_spec, test_path_source, test_path_target)
self.vocoder = WaveRNN(rnn_dims=hparams.voc_rnn_dims,
fc_dims=hparams.voc_fc_dims,
bits=hparams.bits,
pad=hparams.voc_pad,
upsample_factors=hparams.voc_upsample_factors,
feat_dims=hparams.num_mels,
compute_dims=hparams.voc_compute_dims,
res_out_dims=hparams.voc_res_out_dims,
res_blocks=hparams.voc_res_blocks,
hop_length=hparams.hop_size,
sample_rate=hparams.sample_rate,
mode=hparams.voc_mode)
if is_train:
self.criterionIdt = torch.nn.L1Loss(reduction='mean')
self.opt_encoder = torch.optim.Adam(self.encoder.parameters(),
lr=lr)
self.opt_decoder = torch.optim.Adam(itertools.chain(
self.decoder.parameters(), self.postnet.parameters()),
lr=lr)
if discriminator:
self.opt_dis = torch.optim.Adam(self.dis.parameters(), lr=lr)
self.opt_vocoder = torch.optim.Adam(self.vocoder.parameters(),
lr=hparams.voc_lr)
self.vocoder_loss_func = F.cross_entropy # Only for RAW
if multigpu:
self.encoder = nn.DataParallel(self.encoder)
self.decoder = nn.DataParallel(self.decoder)
self.postnet = nn.DataParallel(self.postnet)
self.vocoder = nn.DataParallel(self.vocoder)
if self.dis is not None:
self.dis = nn.DataParallel(self.dis)
def prepare_test(self, dim_spec, source_path=None, target_path=None):
if source_path is None:
source_path = "/mnt/lustre/dengkangle/cmu/datasets/audio/test/trump_02.wav"
if target_path is None:
target_path = "/mnt/lustre/dengkangle/cmu/datasets/audio/test/female.wav"
# source_path = "/home/kangled/datasets/audio/Chaplin_01.wav"
# target_path = "/home/kangled/datasets/audio/Obama_01.wav"
mel_basis80 = librosa.filters.mel(hparams.sample_rate,
hparams.n_fft,
n_mels=80)
wav, sr = librosa.load(source_path, hparams.sample_rate)
wav = preemphasis(wav, hparams.preemphasis, hparams.preemphasize)
linear_spec = np.abs(
librosa.stft(wav,
n_fft=hparams.n_fft,
hop_length=hparams.hop_size,
win_length=hparams.win_size))
mel_spec = mel_basis80.dot(linear_spec)
mel_db = 20 * np.log10(mel_spec)
source_spec = np.clip((mel_db + 120) / 125, 0, 1)
# source_spec = mel_spec
self.source_embed = torch.from_numpy(np.array([0, 1
])).float().unsqueeze(0)
self.source_wav = wav
wav, sr = librosa.load(target_path, hparams.sample_rate)
wav = preemphasis(wav, hparams.preemphasis, hparams.preemphasize)
linear_spec = np.abs(
librosa.stft(wav,
n_fft=hparams.n_fft,
hop_length=hparams.hop_size,
win_length=hparams.win_size))
mel_spec = mel_basis80.dot(linear_spec)
mel_db = 20 * np.log10(mel_spec)
target_spec = np.clip((mel_db + 120) / 125, 0, 1)
# target_spec = mel_spec
self.target_embed = torch.from_numpy(np.array([1, 0
])).float().unsqueeze(0)
self.target_wav = wav
self.source_spec = torch.Tensor(pad_seq(source_spec.T,
hparams.freq)).unsqueeze(0)
self.target_spec = torch.Tensor(pad_seq(target_spec.T,
hparams.freq)).unsqueeze(0)
def test_fixed(self, device):
with torch.no_grad():
t2s_spec = self.conversion(self.target_embed, self.source_embed,
self.target_spec, device).cpu()
s2s_spec = self.conversion(self.source_embed, self.source_embed,
self.source_spec, device).cpu()
s2t_spec = self.conversion(self.source_embed, self.target_embed,
self.source_spec, device).cpu()
t2t_spec = self.conversion(self.target_embed, self.target_embed,
self.target_spec, device).cpu()
ret_dic = {}
ret_dic['A_fake_griffin'], sr = mel2wav(s2t_spec.numpy().squeeze(0).T)
ret_dic['B_fake_griffin'], sr = mel2wav(t2s_spec.numpy().squeeze(0).T)
ret_dic['A'] = self.source_wav
ret_dic['B'] = self.target_wav
with torch.no_grad():
if not self.multigpu:
ret_dic['A_fake_w'] = inv_preemphasis(
self.vocoder.generate(s2t_spec.to(device).transpose(2, 1),
False,
None,
None,
mu_law=True), hparams.preemphasis,
hparams.preemphasize)
ret_dic['B_fake_w'] = inv_preemphasis(
self.vocoder.generate(t2s_spec.to(device).transpose(2, 1),
False,
None,
None,
mu_law=True), hparams.preemphasis,
hparams.preemphasize)
else:
ret_dic['A_fake_w'] = inv_preemphasis(
self.vocoder.module.generate(s2t_spec.to(device).transpose(
2, 1),
False,
None,
None,
mu_law=True),
hparams.preemphasis, hparams.preemphasize)
ret_dic['B_fake_w'] = inv_preemphasis(
self.vocoder.module.generate(t2s_spec.to(device).transpose(
2, 1),
False,
None,
None,
mu_law=True),
hparams.preemphasis, hparams.preemphasize)
return ret_dic, sr
def conversion(self, speaker_org, speaker_trg, spec, device, speed=1):
speaker_org, speaker_trg, spec = speaker_org.to(
device), speaker_trg.to(device), spec.to(device)
if not self.multigpu:
codes = self.encoder(spec, speaker_org)
else:
codes = self.encoder.module(spec, speaker_org)
tmp = []
for code in codes:
tmp.append(
code.unsqueeze(1).expand(
-1, int(speed * spec.size(1) / len(codes)), -1))
code_exp = torch.cat(tmp, dim=1)
encoder_outputs = torch.cat((code_exp, speaker_trg.unsqueeze(1).expand(
-1, code_exp.size(1), -1)),
dim=-1)
mel_outputs = self.decoder(
code_exp) if not self.multigpu else self.decoder.module(code_exp)
mel_outputs_postnet = self.postnet(mel_outputs.transpose(2, 1))
mel_outputs_postnet = mel_outputs + mel_outputs_postnet.transpose(2, 1)
return mel_outputs_postnet
def optimize_parameters(self,
dataloader,
epochs,
device,
display_freq=10,
save_freq=1000,
save_dir="./",
experimentName="Train",
load_model=None,
initial_niter=0):
writer = SummaryWriter(log_dir="logs/" + experimentName)
if load_model is not None:
print("Loading from %s..." % load_model)
# self.load_state_dict(torch.load(load_model))
d = torch.load(load_model)
newdict = d.copy()
for key, value in d.items():
newkey = key
if 'wavenet' in key:
newdict[key.replace('wavenet',
'vocoder')] = newdict.pop(key)
newkey = key.replace('wavenet', 'vocoder')
if self.multigpu and 'module' not in key:
newdict[newkey.replace('.', '.module.',
1)] = newdict.pop(newkey)
newkey = newkey.replace('.', '.module.', 1)
if newkey not in self.state_dict():
newdict.pop(newkey)
self.load_state_dict(newdict)
print("AutoVC Model Loaded")
niter = initial_niter
for epoch in range(epochs):
self.train()
for i, data in enumerate(dataloader):
speaker_org, spec, prev, wav = data
loss_dict, loss_dict_discriminator, loss_dict_wavenet = \
self.train_step(spec.to(device), speaker_org.to(device), prev=prev.to(device), wav=wav.to(device), device=device)
if niter % display_freq == 0:
print("Epoch[%d] Iter[%d] Niter[%d] %s %s %s" %
(epoch, i, niter, loss_dict, loss_dict_discriminator,
loss_dict_wavenet))
writer.add_scalars('data/Loss', loss_dict, niter)
if loss_dict_discriminator != {}:
writer.add_scalars('data/discriminator',
loss_dict_discriminator, niter)
if loss_dict_wavenet != {}:
writer.add_scalars('data/wavenet', loss_dict_wavenet,
niter)
if niter % save_freq == 0:
print("Saving and Testing...", end='\t')
torch.save(
self.state_dict(),
save_dir + '/Epoch' + str(epoch).zfill(3) + '_Iter' +
str(niter).zfill(8) + ".pkl")
# self.load_state_dict(torch.load('params.pkl'))
if len(dataloader) >= 2:
wav_dic, sr = self.test_fixed(device)
for key, wav in wav_dic.items():
# print(wav.shape)
writer.add_audio(key, wav, niter, sample_rate=sr)
print("Done")
self.train()
torch.cuda.empty_cache() # Prevent Out of Memory
niter += 1
def train_step(self,
x,
c_org,
mask=None,
mask_code=None,
prev=None,
wav=None,
ret_content=False,
retain_graph=False,
device='cuda:0'):
codes = self.encoder(x, c_org)
# print(codes[0].shape)
content = torch.cat([code.unsqueeze(1) for code in codes], dim=1)
# print("content shape", content.shape)
tmp = []
for code in codes:
tmp.append(
code.unsqueeze(1).expand(-1, int(x.size(1) / len(codes)), -1))
code_exp = torch.cat(tmp, dim=1)
encoder_outputs = torch.cat(
(code_exp, c_org.unsqueeze(1).expand(-1, x.size(1), -1)), dim=-1)
mel_outputs = self.decoder(code_exp)
mel_outputs_postnet = self.postnet(mel_outputs.transpose(2, 1))
mel_outputs_postnet = mel_outputs + mel_outputs_postnet.transpose(2, 1)
loss_dict, loss_dict_discriminator, loss_dict_wavenet = {}, {}, {}
loss_recon = self.criterionIdt(x, mel_outputs)
loss_recon0 = self.criterionIdt(x, mel_outputs_postnet)
loss_dict['recon'], loss_dict['recon0'] = loss_recon.data.item(
), loss_recon0.data.item()
if self.loss_content:
recons_codes = self.encoder(mel_outputs_postnet, c_org)
recons_content = torch.cat(
[code.unsqueeze(1) for code in recons_codes], dim=1)
if mask is not None:
loss_content = self.criterionIdt(
content.masked_select(mask_code.byte()),
recons_content.masked_select(mask_code.byte()))
else:
loss_content = self.criterionIdt(content, recons_content)
loss_dict['content'] = loss_content.data.item()
else:
loss_content = torch.from_numpy(np.array(0))
loss_gen, loss_dis, loss_vocoder = [torch.from_numpy(np.array(0))] * 3
fake_mel = None
if self.dis:
# true_label = torch.from_numpy(np.ones(shape=(x.shape[0]))).to('cuda:0').long()
# false_label = torch.from_numpy(np.zeros(shape=(x.shape[0]))).to('cuda:0').long()
flip_speaker = 1 - c_org
fake_mel = self.conversion(c_org, flip_speaker, x, device)
loss_dis = self.dis_criterion(self.dis(x),
True) + self.dis_criterion(
self.dis(fake_mel), False)
# + self.dis_criterion(self.dis(mel_outputs_postnet), False)
self.opt_dis.zero_grad()
loss_dis.backward(retain_graph=True)
self.opt_dis.step()
loss_gen = self.dis_criterion(self.dis(fake_mel), True)
# + self.dis_criterion(self.dis(mel_outputs_postnet), True)
loss_dict_discriminator['dis'], loss_dict_discriminator[
'gen'] = loss_dis.data.item(), loss_gen.data.item()
if not self.multigpu:
y_hat = self.vocoder(
prev,
self.vocoder.pad_tensor(mel_outputs_postnet,
hparams.voc_pad).transpose(1, 2))
else:
y_hat = self.vocoder(
prev,
self.vocoder.module.pad_tensor(mel_outputs_postnet,
hparams.voc_pad).transpose(
1, 2))
y_hat = y_hat.transpose(1, 2).unsqueeze(-1)
# assert (0 <= wav < 2 ** 9).all()
loss_vocoder = self.vocoder_loss_func(y_hat,
wav.unsqueeze(-1).to(device))
self.opt_vocoder.zero_grad()
Loss = loss_recon + loss_recon0 + loss_content + \
self.lambda_gan * loss_gen + self.lambda_wavenet * loss_vocoder
loss_dict['total'] = Loss.data.item()
self.opt_encoder.zero_grad()
self.opt_decoder.zero_grad()
Loss.backward(retain_graph=retain_graph)
self.opt_encoder.step()
self.opt_decoder.step()
grad_norm = torch.nn.utils.clip_grad_norm_(self.vocoder.parameters(),
65504.0)
self.opt_vocoder.step()
if ret_content:
return loss_recon, loss_recon0, loss_content, Loss, content
return loss_dict, loss_dict_discriminator, loss_dict_wavenet