def synthesis(text_list, plot=True):
device = "cuda:2"
# load graphs
graph0 = Text2Mel()
graph1 = SuperRes()
load(os.path.join(Hyper.logdir, "text2mel/pkg/trained.pkg"),
graph0,
device='cpu')
load(os.path.join(Hyper.logdir, "superres/pkg/trained.pkg"),
graph1,
device='cpu')
graph0.eval()
graph1.eval()
# make dir
syn_dir = os.path.join(Hyper.root_dir, "synthesis")
if not os.path.exists(syn_dir):
os.makedirs(syn_dir)
# phase1: text to mel
graph0.to(device)
texts = [process_text(text, padding=True) for text in text_list]
texts = torch.LongTensor(np.asarray(texts)).to(device)
mels = torch.FloatTensor(
np.zeros(
(len(texts), Hyper.dim_f, Hyper.data_max_mel_length))).to(device)
prev_atten = None
bar = PrettyBar(Hyper.data_max_mel_length - 1)
bar.set_description("Text to Mel")
for t in bar:
_, new_mel = graph0(texts, mels, None if t == 0 else t - 1, prev_atten)
mels[:, :, t + 1].data.copy_(new_mel[:, :, t].data)
prev_atten = graph0.attention
for i in range(len(text_list)):
# mels[:, :, :-1].data.copy_(mels[:, :, 1:].data)
if plot:
plot_attention(graph0.attention[i].cpu().data, "atten", i, True,
syn_dir)
plot_spectrum(mels[i].cpu().data, "mels", i, True, syn_dir)
del graph0
# phase2: super resolution
graph1.to(device)
_, mags = graph1(mels)
bar = PrettyBar(len(text_list))
bar.set_description("Super Resolution")
for i in bar:
wav = spectrogram2wav(mags[i].cpu().data.numpy())
wavfile.write(os.path.join(syn_dir, "syn_{}.wav".format(i)),
Hyper.audio_samplerate, wav)
if plot:
plot_spectrum(mags[i].cpu().data, "mags", i, True, syn_dir)
del graph1
def train_text2mel(load_trained):
# create log dir
logdir = os.path.join(Hyper.logdir, "text2mel")
if not os.path.exists(logdir):
os.makedirs(logdir)
if not os.path.exists(os.path.join(logdir, "pkg")):
os.mkdir(os.path.join(logdir, "pkg"))
# device
device = Hyper.device_text2mel
graph = Text2Mel().to(device)
# set the training flag
graph.train()
# load data and get batch maker
names, lengths, texts = load_data()
batch_maker = BatchMaker(Hyper.batch_size, names, lengths, texts)
criterion_mels = nn.L1Loss().to(device)
criterion_bd1 = nn.BCEWithLogitsLoss().to(device)
criterion_atten = nn.L1Loss().to(device)
optimizer = torch.optim.Adam(graph.parameters(),
lr=Hyper.adam_alpha,
betas=Hyper.adam_betas,
eps=Hyper.adam_eps)
lossplot_mels = LogHelper("mel_l1", logdir)
lossplot_bd1 = LogHelper("mel_BCE", logdir)
lossplot_atten = LogHelper("atten", logdir)
dynamic_guide = float(Hyper.guide_weight)
global_step = 0
# check if load
if load_trained > 0:
print("load model trained for {}k batches".format(load_trained))
global_step = load(
os.path.join(logdir, "pkg/save_{}k.pkg".format(load_trained)),
graph, {
"mels": criterion_mels,
"bd1": criterion_bd1,
"atten": criterion_atten
}, optimizer)
dynamic_guide *= Hyper.guide_decay**(load_trained * 1000)
for loop_cnt in range(
int(Hyper.num_batches / batch_maker.num_batches() + 0.5)):
print("loop", loop_cnt)
bar = PrettyBar(batch_maker.num_batches())
bar.set_description("training...")
loss_str0 = MovingAverage()
loss_str1 = MovingAverage()
loss_str2 = MovingAverage()
for bi in bar:
batch = batch_maker.next_batch()
# make batch
texts = torch.LongTensor(batch["texts"]).to(device)
# shift mel
shift_mels = torch.FloatTensor(
np.concatenate((np.zeros(
(batch["mels"].shape[0], batch["mels"].shape[1], 1)),
batch["mels"][:, :, :-1]),
axis=2)).to(device)
# ground truth
mels = torch.FloatTensor(batch["mels"]).to(device)
# forward
pred_logits, pred_mels = graph(texts, shift_mels)
# loss
if False:
loss_mels = sum(
criterion_mels(
torch.narrow(pred_mels[i], -1, 0, batch["mel_lengths"]
[i]),
torch.narrow(mels[i], -1, 0, batch["mel_lengths"][i]))
for i in range(batch_maker.batch_size())) / float(
batch_maker.batch_size())
loss_bd1 = sum(
criterion_bd1(
torch.narrow(pred_logits[i], -1, 0,
batch["mel_lengths"][i]),
torch.narrow(mels[i], -1, 0, batch["mel_lengths"][i]))
for i in range(batch_maker.batch_size())) / float(
batch_maker.batch_size())
else:
loss_mels = criterion_mels(pred_mels, mels)
loss_bd1 = criterion_bd1(pred_logits, mels)
# guide attention
atten_guide = torch.FloatTensor(batch["atten_guides"]).to(device)
atten_mask = torch.FloatTensor(batch["atten_masks"]).to(device)
atten_mask = torch.ones_like(graph.attention)
loss_atten = criterion_atten(
atten_guide * graph.attention * atten_mask,
torch.zeros_like(graph.attention)) * dynamic_guide
loss = loss_mels + loss_bd1 + loss_atten
# backward
graph.zero_grad()
optimizer.zero_grad()
loss.backward()
# clip grad
nn.utils.clip_grad_value_(graph.parameters(), 1)
optimizer.step()
# log
loss_str0.add(loss_mels.cpu().data.mean())
loss_str1.add(loss_bd1.cpu().data.mean())
loss_str2.add(loss_atten.cpu().data.mean())
lossplot_mels.add(loss_str0(), global_step)
lossplot_bd1.add(loss_str1(), global_step)
lossplot_atten.add(loss_str2(), global_step)
# adjust dynamic_guide
# dynamic_guide = float((loss_mels + loss_bd1).cpu().data.mean() / loss_atten.cpu().data.mean())
dynamic_guide *= Hyper.guide_decay
if dynamic_guide < Hyper.guide_lowbound:
dynamic_guide = Hyper.guide_lowbound
bar.set_description(
"gs: {}, mels: {}, bd1: {}, atten: {}, scale: {}".format(
global_step, loss_str0(), loss_str1(), loss_str2(),
"%4f" % dynamic_guide))
# plot
if global_step % 100 == 0:
gs = 0
plot_spectrum(mels[0].cpu().data, "mel_true", gs, dir=logdir)
plot_spectrum(shift_mels[0].cpu().data,
"mel_input",
gs,
dir=logdir)
plot_spectrum(pred_mels[0].cpu().data,
"mel_pred",
gs,
dir=logdir)
plot_spectrum(graph.query[0].cpu().data,
"query",
gs,
dir=logdir)
plot_attention(graph.attention[0].cpu().data,
"atten",
gs,
True,
dir=logdir)
plot_attention((atten_guide)[0].cpu().data,
"atten_guide",
gs,
True,
dir=logdir)
if global_step % 500 == 0:
lossplot_mels.plot()
lossplot_bd1.plot()
lossplot_atten.plot()
if global_step % 10000 == 0:
save(
os.path.join(logdir, "pkg/save_{}k.pkg").format(
global_step // 1000), graph, {
"mels": criterion_mels,
"bd1": criterion_bd1,
"atten": criterion_atten
}, optimizer, global_step, True)
# increase global step
global_step += 1
def synthesis(text_list, plot=True):
info = {}
absolute_beginning = time.time()
info["start_time"] = absolute_beginning
Latency_beginning = None
device = "cpu" # "cuda:0"
# load graphs
graph0 = Text2Mel()
graph1 = SuperRes()
load(os.path.join(Hyper.logdir, "text2mel/pkg/trained.pkg"),
graph0,
device='cpu')
load(os.path.join(Hyper.logdir, "superres/pkg/trained.pkg"),
graph1,
device='cpu')
graph0.eval()
graph1.eval()
# make dir
syn_dir = os.path.join(Hyper.root_dir, "synthesis")
if not os.path.exists(syn_dir):
os.makedirs(syn_dir)
# phase1: text to mel
graph0.to(device)
texts = [process_text(text, padding=True) for text in text_list]
texts = torch.LongTensor(np.asarray(texts)).to(device)
mels = torch.FloatTensor(
np.zeros(
(len(texts), Hyper.dim_f, Hyper.data_max_mel_length))).to(device)
prev_atten = None
bar = PrettyBar(Hyper.data_max_mel_length - 1)
bar.set_description("Text to Mel")
begin_of_frame_synthesis = time.time()
init_time = begin_of_frame_synthesis - absolute_beginning
for t in bar:
_, new_mel = graph0(texts, mels, None if t == 0 else t - 1, prev_atten)
mels[:, :, t + 1].data.copy_(new_mel[:, :, t].data)
prev_atten = graph0.attention
if Latency_beginning == None:
# from the start time of the synthesis until the first time we reach this point is called the Latency
Latency_beginning = time.time() - absolute_beginning
Latency_synthesis = time.time() - begin_of_frame_synthesis
duration_mels = time.time() - begin_of_frame_synthesis
info_mels = {}
for i, mel in enumerate(mels):
info_mels["syn_{}.wav".format(i)] = mel
for i in range(len(text_list)):
# mels[:, :, :-1].data.copy_(mels[:, :, 1:].data)
if plot:
plot_attention(graph0.attention[i].cpu().data, "atten", i, True,
syn_dir)
plot_spectrum(mels[i].cpu().data, "mels", i, True, syn_dir)
del graph0
# phase2: super resolution
graph1.to(device)
_, mags = graph1(mels)
duration_mags = time.time() - begin_of_frame_synthesis
bar = PrettyBar(len(text_list))
bar.set_description("Super Resolution")
info_samples = {}
info_mags = {}
for i in bar:
info_mags["syn_{}.wav".format(i)] = mags[i]
wav = spectrogram2wav(mags[i].cpu().data.numpy())
info_samples["syn_{}.wav".format(i)] = wav
wavfile.write(os.path.join(syn_dir, "syn_{}.wav".format(i)),
Hyper.audio_samplerate, wav)
if plot:
plot_spectrum(mags[i].cpu().data, "mags", i, True, syn_dir)
del graph1
duration_total = time.time() - begin_of_frame_synthesis
time_measurents = {
"init_time": init_time,
"Latency_beginning": Latency_beginning,
"Latency_synthesis": Latency_synthesis,
"duration_mels": duration_mels,
"duration_mags": duration_mags,
"duration_total": duration_total,
}
info["mels"] = info_mels
info["mags"] = info_mags
info["samples"] = info_samples
info["time_measurements"] = time_measurents
return info