def test_dccrnet():
_, istft = make_enc_dec("stft", 512, 512)
input_samples = istft(torch.zeros((514, 16))).shape[0]
_default_test_model(DCCRNet("DCCRN-CL"), input_samples=input_samples)
_default_test_model(DCCRNet("DCCRN-CL", n_src=2), input_samples=input_samples)
# DCCRMaskNet should fail with wrong input dimensions
DCCRNet("mini").masker(torch.zeros((1, 256, 3), dtype=torch.complex64))
with pytest.raises(TypeError):
DCCRNet("mini").masker(torch.zeros((1, 42, 3), dtype=torch.complex64))
def test_dccrnet():
n_fft = 512
_, istft = make_enc_dec("stft",
n_filters=n_fft,
kernel_size=400,
stride=100,
sample_rate=16000)
input_samples = istft(torch.zeros((n_fft + 2, 16))).shape[0]
_default_test_model(DCCRNet("DCCRN-CL"), input_samples=input_samples)
_default_test_model(DCCRNet("DCCRN-CL", n_src=2),
input_samples=input_samples)
# DCCRMaskNet should fail with wrong input dimensions
DCCRNet("mini").masker(torch.zeros((1, 256, 3), dtype=torch.complex64))
with pytest.raises(TypeError):
DCCRNet("mini").masker(torch.zeros((1, 42, 3), dtype=torch.complex64))
def test_dccrnet():
_default_test_model(DCCRNet("DCCRN-CL"), input_samples=1300)
def main(conf):
train_set = LibriMix(
csv_dir=conf["data"]["train_dir"],
task=conf["data"]["task"],
sample_rate=conf["data"]["sample_rate"],
n_src=conf["data"]["n_src"],
segment=conf["data"]["segment"],
)
val_set = LibriMix(
csv_dir=conf["data"]["valid_dir"],
task=conf["data"]["task"],
sample_rate=conf["data"]["sample_rate"],
n_src=conf["data"]["n_src"],
segment=conf["data"]["segment"],
)
train_loader = DataLoader(
train_set,
shuffle=True,
batch_size=conf["training"]["batch_size"],
num_workers=conf["training"]["num_workers"],
drop_last=True,
)
val_loader = DataLoader(
val_set,
shuffle=False,
batch_size=conf["training"]["batch_size"],
num_workers=conf["training"]["num_workers"],
drop_last=True,
)
conf["masknet"].update({"n_src": conf["data"]["n_src"]})
model = DCCRNet(**conf["filterbank"],
**conf["masknet"],
sample_rate=conf["data"]["sample_rate"])
optimizer = make_optimizer(model.parameters(), **conf["optim"])
# Define scheduler
scheduler = None
if conf["training"]["half_lr"]:
scheduler = ReduceLROnPlateau(optimizer=optimizer,
factor=0.5,
patience=5)
# Just after instantiating, save the args. Easy loading in the future.
exp_dir = conf["main_args"]["exp_dir"]
os.makedirs(exp_dir, exist_ok=True)
conf_path = os.path.join(exp_dir, "conf.yml")
with open(conf_path, "w") as outfile:
yaml.safe_dump(conf, outfile)
# Define Loss function.
loss_func = PITLossWrapper(pairwise_neg_sisdr, pit_from="pw_mtx")
system = System(
model=model,
loss_func=loss_func,
optimizer=optimizer,
train_loader=train_loader,
val_loader=val_loader,
scheduler=scheduler,
config=conf,
)
# Define callbacks
callbacks = []
checkpoint_dir = os.path.join(exp_dir, "checkpoints/")
checkpoint = ModelCheckpoint(checkpoint_dir,
monitor="val_loss",
mode="min",
save_top_k=5,
verbose=True)
callbacks.append(checkpoint)
if conf["training"]["early_stop"]:
callbacks.append(
EarlyStopping(monitor="val_loss",
mode="min",
patience=30,
verbose=True))
# Don't ask GPU if they are not available.
gpus = -1 if torch.cuda.is_available() else None
distributed_backend = "ddp" if torch.cuda.is_available() else None
trainer = pl.Trainer(
max_epochs=conf["training"]["epochs"],
callbacks=callbacks,
default_root_dir=exp_dir,
gpus=gpus,
distributed_backend=distributed_backend,
limit_train_batches=1.0, # Useful for fast experiment
gradient_clip_val=5.0,
)
trainer.fit(system)
best_k = {k: v.item() for k, v in checkpoint.best_k_models.items()}
with open(os.path.join(exp_dir, "best_k_models.json"), "w") as f:
json.dump(best_k, f, indent=0)
state_dict = torch.load(checkpoint.best_model_path)
system.load_state_dict(state_dict=state_dict["state_dict"])
system.cpu()
to_save = system.model.serialize()
to_save.update(train_set.get_infos())
torch.save(to_save, os.path.join(exp_dir, "best_model.pth"))