class TestTTSDataset(unittest.TestCase):
def __init__(self, *args, **kwargs):
super(TestTTSDataset, self).__init__(*args, **kwargs)
self.max_loader_iter = 4
self.ap = AudioProcessor(**c.audio)
def _create_dataloader(self, batch_size, r, bgs):
items = ljspeech(c.data_path, 'metadata.csv')
dataset = TTSDataset.MyDataset(
r,
c.text_cleaner,
compute_linear_spec=True,
ap=self.ap,
meta_data=items,
tp=c.characters if 'characters' in c.keys() else None,
batch_group_size=bgs,
min_seq_len=c.min_seq_len,
max_seq_len=float("inf"),
use_phonemes=False)
dataloader = DataLoader(dataset,
batch_size=batch_size,
shuffle=False,
collate_fn=dataset.collate_fn,
drop_last=True,
num_workers=c.num_loader_workers)
return dataloader, dataset
def test_loader(self):
if ok_ljspeech:
dataloader, dataset = self._create_dataloader(2, c.r, 0)
for i, data in enumerate(dataloader):
if i == self.max_loader_iter:
break
text_input = data[0]
text_lengths = data[1]
speaker_name = data[2]
linear_input = data[3]
mel_input = data[4]
mel_lengths = data[5]
stop_target = data[6]
item_idx = data[7]
neg_values = text_input[text_input < 0]
check_count = len(neg_values)
assert check_count == 0, \
" !! Negative values in text_input: {}".format(check_count)
# TODO: more assertion here
assert isinstance(speaker_name[0], str)
assert linear_input.shape[0] == c.batch_size
assert linear_input.shape[2] == self.ap.fft_size // 2 + 1
assert mel_input.shape[0] == c.batch_size
assert mel_input.shape[2] == c.audio['num_mels']
# check normalization ranges
if self.ap.symmetric_norm:
assert mel_input.max() <= self.ap.max_norm
assert mel_input.min() >= -self.ap.max_norm #pylint: disable=invalid-unary-operand-type
assert mel_input.min() < 0
else:
assert mel_input.max() <= self.ap.max_norm
assert mel_input.min() >= 0
def test_batch_group_shuffle(self):
if ok_ljspeech:
dataloader, dataset = self._create_dataloader(2, c.r, 16)
last_length = 0
frames = dataset.items
for i, data in enumerate(dataloader):
if i == self.max_loader_iter:
break
text_input = data[0]
text_lengths = data[1]
speaker_name = data[2]
linear_input = data[3]
mel_input = data[4]
mel_lengths = data[5]
stop_target = data[6]
item_idx = data[7]
avg_length = mel_lengths.numpy().mean()
assert avg_length >= last_length
dataloader.dataset.sort_items()
is_items_reordered = False
for idx, item in enumerate(dataloader.dataset.items):
if item != frames[idx]:
is_items_reordered = True
break
assert is_items_reordered
def test_padding_and_spec(self):
if ok_ljspeech:
dataloader, dataset = self._create_dataloader(1, 1, 0)
for i, data in enumerate(dataloader):
if i == self.max_loader_iter:
break
text_input = data[0]
text_lengths = data[1]
speaker_name = data[2]
linear_input = data[3]
mel_input = data[4]
mel_lengths = data[5]
stop_target = data[6]
item_idx = data[7]
# check mel_spec consistency
wav = np.asarray(self.ap.load_wav(item_idx[0]),
dtype=np.float32)
mel = self.ap.melspectrogram(wav).astype('float32')
mel = torch.FloatTensor(mel).contiguous()
mel_dl = mel_input[0]
# NOTE: Below needs to check == 0 but due to an unknown reason
# there is a slight difference between two matrices.
# TODO: Check this assert cond more in detail.
assert abs(mel.T - mel_dl).max() < 1e-5, abs(mel.T -
mel_dl).max()
# check mel-spec correctness
mel_spec = mel_input[0].cpu().numpy()
wav = self.ap.inv_melspectrogram(mel_spec.T)
self.ap.save_wav(wav, OUTPATH + '/mel_inv_dataloader.wav')
shutil.copy(item_idx[0],
OUTPATH + '/mel_target_dataloader.wav')
# check linear-spec
linear_spec = linear_input[0].cpu().numpy()
wav = self.ap.inv_spectrogram(linear_spec.T)
self.ap.save_wav(wav, OUTPATH + '/linear_inv_dataloader.wav')
shutil.copy(item_idx[0],
OUTPATH + '/linear_target_dataloader.wav')
# check the last time step to be zero padded
assert linear_input[0, -1].sum() != 0
assert linear_input[0, -2].sum() != 0
assert mel_input[0, -1].sum() != 0
assert mel_input[0, -2].sum() != 0
assert stop_target[0, -1] == 1
assert stop_target[0, -2] == 0
assert stop_target.sum() == 1
assert len(mel_lengths.shape) == 1
assert mel_lengths[0] == linear_input[0].shape[0]
assert mel_lengths[0] == mel_input[0].shape[0]
# Test for batch size 2
dataloader, dataset = self._create_dataloader(2, 1, 0)
for i, data in enumerate(dataloader):
if i == self.max_loader_iter:
break
text_input = data[0]
text_lengths = data[1]
speaker_name = data[2]
linear_input = data[3]
mel_input = data[4]
mel_lengths = data[5]
stop_target = data[6]
item_idx = data[7]
if mel_lengths[0] > mel_lengths[1]:
idx = 0
else:
idx = 1
# check the first item in the batch
assert linear_input[idx, -1].sum() != 0
assert linear_input[idx, -2].sum() != 0, linear_input
assert mel_input[idx, -1].sum() != 0
assert mel_input[idx, -2].sum() != 0, mel_input
assert stop_target[idx, -1] == 1
assert stop_target[idx, -2] == 0
assert stop_target[idx].sum() == 1
assert len(mel_lengths.shape) == 1
assert mel_lengths[idx] == mel_input[idx].shape[0]
assert mel_lengths[idx] == linear_input[idx].shape[0]
# check the second itme in the batch
assert linear_input[1 - idx, -1].sum() == 0
assert mel_input[1 - idx, -1].sum() == 0
assert stop_target[1, mel_lengths[1] - 1] == 1
assert stop_target[1, mel_lengths[1]:].sum() == 0
assert len(mel_lengths.shape) == 1
def main():
"""Run preprocessing process."""
parser = argparse.ArgumentParser(
description="Compute mean and variance of spectrogtram features.")
parser.add_argument(
"--config_path",
type=str,
required=True,
help="TTS config file path to define audio processin parameters.")
parser.add_argument("--out_path",
default=None,
type=str,
help="directory to save the output file.")
args = parser.parse_args()
# load config
CONFIG = load_config(args.config_path)
CONFIG.audio['signal_norm'] = False # do not apply earlier normalization
CONFIG.audio['stats_path'] = None # discard pre-defined stats
# load audio processor
ap = AudioProcessor(**CONFIG.audio)
# load the meta data of target dataset
dataset_items = load_meta_data(CONFIG.datasets)[0] # take only train data
print(f" > There are {len(dataset_items)} files.")
mel_sum = 0
mel_square_sum = 0
linear_sum = 0
linear_square_sum = 0
N = 0
for item in tqdm(dataset_items):
# compute features
wav = ap.load_wav(item[1])
linear = ap.spectrogram(wav)
mel = ap.melspectrogram(wav)
# compute stats
N += mel.shape[1]
mel_sum += mel.sum(1)
linear_sum += linear.sum(1)
mel_square_sum += (mel**2).sum(axis=1)
linear_square_sum += (linear**2).sum(axis=1)
mel_mean = mel_sum / N
mel_scale = np.sqrt(mel_square_sum / N - mel_mean**2)
linear_mean = linear_sum / N
linear_scale = np.sqrt(linear_square_sum / N - linear_mean**2)
output_file_path = os.path.join(args.out_path, "scale_stats.npy")
stats = {}
stats['mel_mean'] = mel_mean
stats['mel_std'] = mel_scale
stats['linear_mean'] = linear_mean
stats['linear_std'] = linear_scale
print(f' > Avg mel spec mean: {mel_mean.mean()}')
print(f' > Avg mel spec scale: {mel_scale.mean()}')
print(f' > Avg linear spec mean: {linear_mean.mean()}')
print(f' > Avg lienar spec scale: {linear_scale.mean()}')
# set default config values for mean-var scaling
CONFIG.audio['stats_path'] = output_file_path
CONFIG.audio['signal_norm'] = True
# remove redundant values
del CONFIG.audio['max_norm']
del CONFIG.audio['min_level_db']
del CONFIG.audio['symmetric_norm']
del CONFIG.audio['clip_norm']
stats['audio_config'] = CONFIG.audio
np.save(output_file_path, stats, allow_pickle=True)
print(f' > scale_stats.npy is saved to {output_file_path}')
class TestAudio(unittest.TestCase):
def __init__(self, *args, **kwargs):
super(TestAudio, self).__init__(*args, **kwargs)
self.ap = AudioProcessor(**conf.audio)
def test_audio_synthesis(self):
""" 1. load wav
2. set normalization parameters
3. extract mel-spec
4. invert to wav and save the output
"""
print(" > Sanity check for the process wav -> mel -> wav")
def _test(max_norm, signal_norm, symmetric_norm, clip_norm):
self.ap.max_norm = max_norm
self.ap.signal_norm = signal_norm
self.ap.symmetric_norm = symmetric_norm
self.ap.clip_norm = clip_norm
wav = self.ap.load_wav(WAV_FILE)
mel = self.ap.melspectrogram(wav)
wav_ = self.ap.inv_melspectrogram(mel)
file_name = "/audio_test-melspec_max_norm_{}-signal_norm_{}-symmetric_{}-clip_norm_{}.wav"\
.format(max_norm, signal_norm, symmetric_norm, clip_norm)
print(" | > Creating wav file at : ", file_name)
self.ap.save_wav(wav_, OUT_PATH + file_name)
# maxnorm = 1.0
_test(1., False, False, False)
_test(1., True, False, False)
_test(1., True, True, False)
_test(1., True, False, True)
_test(1., True, True, True)
# maxnorm = 4.0
_test(4., False, False, False)
_test(4., True, False, False)
_test(4., True, True, False)
_test(4., True, False, True)
_test(4., True, True, True)
def test_normalize(self):
"""Check normalization and denormalization for range values and consistency """
print(" > Testing normalization and denormalization.")
wav = self.ap.load_wav(WAV_FILE)
wav = self.ap.sound_norm(wav) # normalize audio to get abetter normalization range below.
self.ap.signal_norm = False
x = self.ap.melspectrogram(wav)
x_old = x
self.ap.signal_norm = True
self.ap.symmetric_norm = False
self.ap.clip_norm = False
self.ap.max_norm = 4.0
x_norm = self.ap._normalize(x)
print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}")
assert (x_old - x).sum() == 0
# check value range
assert x_norm.max() <= self.ap.max_norm + 1, x_norm.max()
assert x_norm.min() >= 0 - 1, x_norm.min()
# check denorm.
x_ = self.ap._denormalize(x_norm)
assert (x - x_).sum() < 1e-3, (x - x_).mean()
self.ap.signal_norm = True
self.ap.symmetric_norm = False
self.ap.clip_norm = True
self.ap.max_norm = 4.0
x_norm = self.ap._normalize(x)
print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}")
assert (x_old - x).sum() == 0
# check value range
assert x_norm.max() <= self.ap.max_norm, x_norm.max()
assert x_norm.min() >= 0, x_norm.min()
# check denorm.
x_ = self.ap._denormalize(x_norm)
assert (x - x_).sum() < 1e-3, (x - x_).mean()
self.ap.signal_norm = True
self.ap.symmetric_norm = True
self.ap.clip_norm = False
self.ap.max_norm = 4.0
x_norm = self.ap._normalize(x)
print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}")
assert (x_old - x).sum() == 0
# check value range
assert x_norm.max() <= self.ap.max_norm + 1, x_norm.max()
assert x_norm.min() >= -self.ap.max_norm - 2, x_norm.min() #pylint: disable=invalid-unary-operand-type
assert x_norm.min() <= 0, x_norm.min()
# check denorm.
x_ = self.ap._denormalize(x_norm)
assert (x - x_).sum() < 1e-3, (x - x_).mean()
self.ap.signal_norm = True
self.ap.symmetric_norm = True
self.ap.clip_norm = True
self.ap.max_norm = 4.0
x_norm = self.ap._normalize(x)
print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}")
assert (x_old - x).sum() == 0
# check value range
assert x_norm.max() <= self.ap.max_norm, x_norm.max()
assert x_norm.min() >= -self.ap.max_norm, x_norm.min() #pylint: disable=invalid-unary-operand-type
assert x_norm.min() <= 0, x_norm.min()
# check denorm.
x_ = self.ap._denormalize(x_norm)
assert (x - x_).sum() < 1e-3, (x - x_).mean()
self.ap.signal_norm = True
self.ap.symmetric_norm = False
self.ap.max_norm = 1.0
x_norm = self.ap._normalize(x)
print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}")
assert (x_old - x).sum() == 0
assert x_norm.max() <= self.ap.max_norm, x_norm.max()
assert x_norm.min() >= 0, x_norm.min()
x_ = self.ap._denormalize(x_norm)
assert (x - x_).sum() < 1e-3
self.ap.signal_norm = True
self.ap.symmetric_norm = True
self.ap.max_norm = 1.0
x_norm = self.ap._normalize(x)
print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}")
assert (x_old - x).sum() == 0
assert x_norm.max() <= self.ap.max_norm, x_norm.max()
assert x_norm.min() >= -self.ap.max_norm, x_norm.min() #pylint: disable=invalid-unary-operand-type
assert x_norm.min() < 0, x_norm.min()
x_ = self.ap._denormalize(x_norm)
assert (x - x_).sum() < 1e-3
def test_scaler(self):
scaler_stats_path = os.path.join(get_tests_input_path(), 'scale_stats.npy')
conf.audio['stats_path'] = scaler_stats_path
conf.audio['preemphasis'] = 0.0
conf.audio['do_trim_silence'] = True
conf.audio['signal_norm'] = True
ap = AudioProcessor(**conf.audio)
mel_mean, mel_std, linear_mean, linear_std, _ = ap.load_stats(scaler_stats_path)
ap.setup_scaler(mel_mean, mel_std, linear_mean, linear_std)
self.ap.signal_norm = False
self.ap.preemphasis = 0.0
# test scaler forward and backward transforms
wav = self.ap.load_wav(WAV_FILE)
mel_reference = self.ap.melspectrogram(wav)
mel_norm = ap.melspectrogram(wav)
mel_denorm = ap._denormalize(mel_norm)
assert abs(mel_reference - mel_denorm).max() < 1e-4
