def _process_utterance(audio_dir, label_dir, index, wav_path, text_path, args):
"""
Preprocesses a single utterance wav/text_jamo pair
this writes the mel scale spectogram to disk and return a tuple to write
to the train.txt file
Args:
- mel_dir: the directory to write the mel spectograms into
- linear_dir: the directory to write the linear spectrograms into
- wav_dir: the directory to write the preprocessed wav into
- index: the numeric index to use in the spectogram filename
- wav_path: path to the audio file containing the speech input
- text_jamo: text_jamo spoken in the input audio file
- hparams: hyper parameters
Returns:
- A tuple: (audio_filename, mel_filename, linear_filename, time_steps, mel_frames, linear_frames, text_jamo)
"""
try:
# Load the audio as numpy array
# wav = audio.load_wav(wav_path, sr=args.sample_rate)
with open(wav_path, 'rb') as pcmfile:
buf = pcmfile.read()
wav = np.frombuffer(buf, dtype='int16')
except FileNotFoundError: #catch missing wav exception
print('file {} present in csv metadata is not present in wav folder. skipping!'.format(wav_path))
return None
# rescale wav
if args.rescale:
wav = wav / np.abs(wav).max() * args.rescaling_max
# M-AILABS extra silence specific
if args.trim_silence:
wav = audio.trim_silence(wav, args)
# [-1, 1]
out = wav
constant_values = 0.
out_dtype = np.float32
# Compute the mel scale spectrogram from the wav
mel_spectrogram = audio.melspectrogram(wav, args).astype(out_dtype)
mel_frames = mel_spectrogram.shape[1]
# Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(wav, args.n_fft, audio.get_hop_size(args))
# Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (0, pad), mode='reflect')
assert len(out) >= mel_frames * audio.get_hop_size(args)
# time resolution adjustment
# ensure length of raw audio is multiple of hop size so that we can use
# transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(args)]
assert len(out) % audio.get_hop_size(args) == 0
time_steps = len(out)
# text_jamo sequence
with open(text_path, 'r', encoding='CP949') as f:
line = f.readline()
# ETRI transcription rule
line = sentence_filter(line).upper()
label_sequence = normalize(line)
print(label_sequence)
# Write the spectrogram and audio to disk
mel_filename = 'mel-{}.npy'.format(index)
label_filename = 'label-{}.txt'.format(index)
np.save(os.path.join(audio_dir, mel_filename), mel_spectrogram.T, allow_pickle=False)
with open(os.path.join(label_dir, label_filename), 'w', encoding='utf-8') as f_out:
f_out.write(label_sequence)
# Return a tuple describing this training example
return (wav_path, text_path, mel_filename, label_filename, time_steps, mel_frames)
def _process_utterance(mel_dir, wav_dir, index, wav_path, speaker_id, hparams):
"""
Preprocesses a single utterance wav/text pair
this writes the mel scale spectogram to disk and return a tuple to write
to the train.txt file
Args:
- mel_dir: the directory to write the mel spectograms into
- linear_dir: the directory to write the linear spectrograms into
- wav_dir: the directory to write the preprocessed wav into
- index: the numeric index to use in the spectrogram filename
- wav_path: path to the audio file containing the speech input
- text: text spoken in the input audio file
- hparams: hyper parameters
Returns:
- A tuple: (audio_filename, mel_filename, linear_filename, time_steps, mel_frames, linear_frames, text)
"""
try:
# Load the audio as numpy array
wav = audio.load_wav(wav_path, sr=hparams.sample_rate)
except FileNotFoundError: #catch missing wav exception
print(
'file {} present in csv metadata is not present in wav folder. skipping!'
.format(wav_path))
return None
#M-AILABS extra silence specific
if hparams.trim_silence:
wav = audio.trim_silence(wav, hparams)
#Pre-emphasize
preem_wav = audio.preemphasis(wav, hparams.preemphasis,
hparams.preemphasize)
#rescale wav
if hparams.rescale:
wav = wav / np.abs(wav).max() * hparams.rescaling_max
preem_wav = preem_wav / np.abs(preem_wav).max() * hparams.rescaling_max
#Assert all audio is in [-1, 1]
if (wav > 1.).any() or (wav < -1.).any():
raise RuntimeError('wav has invalid value: {}'.format(wav_path))
if (preem_wav > 1.).any() or (preem_wav < -1.).any():
raise RuntimeError('wav has invalid value: {}'.format(wav_path))
#Mu-law quantize
if is_mulaw_quantize(hparams.input_type):
#[0, quantize_channels)
out = mulaw_quantize(wav, hparams.quantize_channels)
#Trim silences
start, end = audio.start_and_end_indices(out,
hparams.silence_threshold)
wav = wav[start:end]
preem_wav = preem_wav[start:end]
out = out[start:end]
constant_values = mulaw_quantize(0, hparams.quantize_channels)
out_dtype = np.int16
elif is_mulaw(hparams.input_type):
#[-1, 1]
out = mulaw(wav, hparams.quantize_channels)
constant_values = mulaw(0., hparams.quantize_channels)
out_dtype = np.float32
else:
#[-1, 1]
out = wav
constant_values = 0.
out_dtype = np.float32
# Compute the mel scale spectrogram from the wav
mel_spectrogram = audio.melspectrogram(preem_wav,
hparams).astype(np.float32)
mel_frames = mel_spectrogram.shape[1]
if mel_frames > hparams.max_mel_frames and hparams.clip_mels_length:
return None
if hparams.use_lws:
#Ensure time resolution adjustement between audio and mel-spectrogram
fft_size = hparams.n_fft if hparams.win_size is None else hparams.win_size
l, r = audio.pad_lr(wav, fft_size, audio.get_hop_size(hparams))
#Zero pad audio signal
out = np.pad(out, (l, r),
mode='constant',
constant_values=constant_values)
else:
#Ensure time resolution adjustement between audio and mel-spectrogram
l_pad, r_pad = audio.librosa_pad_lr(wav, hparams.n_fft,
audio.get_hop_size(hparams))
#Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (l_pad, r_pad),
mode='constant',
constant_values=constant_values)
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
#time resolution adjustement
#ensure length of raw audio is multiple of hop size so that we can use
#transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
time_steps = len(out)
# Write the spectrogram and audio to disk
if hparams.gin_channels > 0:
speaker_name = hparams.speakers[speaker_id]
index = speaker_name + '_' + index
audio_filename = os.path.join(wav_dir, 'audio-{}.npy'.format(index))
mel_filename = os.path.join(mel_dir, 'mel-{}.npy'.format(index))
np.save(audio_filename, out.astype(out_dtype), allow_pickle=False)
np.save(mel_filename, mel_spectrogram.T, allow_pickle=False)
#global condition features
if hparams.gin_channels > 0:
speaker_id = speaker_id #put the rule to determine how to assign speaker ids (using file names maybe? file basenames are available in "index" variable)
else:
speaker_id = '<no_g>'
# Return a tuple describing this training example
return (audio_filename, mel_filename, mel_filename, speaker_id, time_steps,
mel_frames)
def _process_utterance(mel_dir, linear_dir, wav_dir, index, wav_path, text,
hparams):
"""
Preprocesses a single utterance wav/text pair
this writes the mel scale spectogram to disk and return a tuple to write
to the train.txt file
Args:
- mel_dir: the directory to write the mel spectograms into
- linear_dir: the directory to write the linear spectrograms into
- wav_dir: the directory to write the preprocessed wav into
- index: the numeric index to use in the spectogram filename
- wav_path: path to the audio file containing the speech input
- text: text spoken in the input audio file
- hparams: hyper parameters
Returns:
- A tuple: (audio_filename, mel_filename, linear_filename, time_steps, mel_frames, linear_frames, text)
"""
try:
# Load the audio as numpy array
wav = audio.load_wav(wav_path, sr=hparams.sample_rate)
except FileNotFoundError: # catch missing wav exception
print(
'file {} present in txt metadata is not present in wav folder. skipping!'
.format(wav_path))
return None
# rescale wav
if hparams.rescale:
wav = wav / np.abs(wav).max() * hparams.rescaling_max
# M-AILABS extra silence specific
if hparams.trim_silence:
wav = audio.trim_silence(wav, hparams)
# Mu-law quantize
if is_mulaw_quantize(hparams.input_type):
# [0, quantize_channels)
out = mulaw_quantize(wav, hparams.quantize_channels)
# Trim silences
start, end = audio.start_and_end_indices(out,
hparams.silence_threshold)
wav = wav[start:end]
out = out[start:end]
constant_values = mulaw_quantize(0, hparams.quantize_channels)
out_dtype = np.int16
elif is_mulaw(hparams.input_type):
# [-1, 1]
out = mulaw(wav, hparams.quantize_channels)
constant_values = mulaw(0., hparams.quantize_channels)
out_dtype = np.float32
else:
# [-1, 1]
out = wav
constant_values = 0.
out_dtype = np.float32
# Compute the mel scale spectrogram from the wav
mel_spectrogram = audio.melspectrogram(wav, hparams).astype(np.float32)
mel_frames = mel_spectrogram.shape[1]
if mel_frames > hparams.max_mel_frames and hparams.clip_mels_length:
return None
# Compute the linear scale spectrogram from the wav
linear_spectrogram = audio.linearspectrogram(wav,
hparams).astype(np.float32)
linear_frames = linear_spectrogram.shape[1]
# sanity check
assert linear_frames == mel_frames
if hparams.use_lws:
# Ensure time resolution adjustement between audio and mel-spectrogram
fft_size = hparams.n_fft if hparams.win_size is None else hparams.win_size
l, r = audio.pad_lr(wav, fft_size, audio.get_hop_size(hparams))
# Zero pad audio signal
out = np.pad(out, (l, r),
mode='constant',
constant_values=constant_values)
else:
# Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(wav, hparams.n_fft,
audio.get_hop_size(hparams))
# Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, pad, mode='reflect')
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
# time resolution adjustement
# ensure length of raw audio is multiple of hop size so that we can use
# transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
time_steps = len(out)
# Write the spectrogram and audio to disk
audio_filename = 'audio-{}.npy'.format(index)
mel_filename = 'mel-{}.npy'.format(index)
linear_filename = 'linear-{}.npy'.format(index)
np.save(os.path.join(wav_dir, audio_filename),
out.astype(out_dtype),
allow_pickle=False)
np.save(os.path.join(mel_dir, mel_filename),
mel_spectrogram.T,
allow_pickle=False)
np.save(os.path.join(linear_dir, linear_filename),
linear_spectrogram.T,
allow_pickle=False)
# Return a tuple describing this training example
return (audio_filename, mel_filename, linear_filename, time_steps,
mel_frames, text)
def _process_utterance(dataset, mel_dir, linear_dir, audio_dir, spk_emb_dir,
index, audio_path, text, emt_label, spk_label, sex,
hparams):
"""
Preprocesses a single utterance wav/text pair
this writes the mel scale spectogram to disk and return a tuple to write
to the train.txt file
Args:
- mel_dir: the directory to write the mel spectograms into
- linear_dir: the directory to write the linear spectrograms into
- wav_dir: the directory to write the preprocessed wav into
- index: the numeric index to use in the spectogram filename
- wav_path: path to the audio file containing the speech input
- text: text spoken in the input audio file
- hparams: hyper parameters
Returns:
- A tuple: (audio_filename, mel_filename, linear_filename, time_steps, mel_frames, linear_frames, text)
"""
try:
# Load the audio as numpy array
aud = audio.load_audio(audio_path, sr=hparams.sample_rate)
except FileNotFoundError: #catch missing wav exception
print(
'file {} present in csv metadata is not present in wav folder. skipping!'
.format(audio_path))
return None
#Trim lead/trail silences
if hparams.trim_silence:
aud = audio.trim_silence(aud, hparams)
#Pre-emphasize
preem_aud = audio.preemphasis(aud, hparams.preemphasis,
hparams.preemphasize)
#rescale audio
if hparams.rescale:
aud = aud / np.abs(aud).max() * hparams.rescaling_max
preem_aud = preem_aud / np.abs(preem_aud).max() * hparams.rescaling_max
#Assert all audio is in [-1, 1]
if (aud > 1.).any() or (aud < -1.).any():
raise RuntimeError(
'audio has invalid value: {}'.format(audio_path))
if (preem_aud > 1.).any() or (preem_aud < -1.).any():
raise RuntimeError(
'audio has invalid value: {}'.format(audio_path))
#Mu-law quantize
if is_mulaw_quantize(hparams.input_type):
#[0, quantize_channels)
out = mulaw_quantize(aud, hparams.quantize_channels)
#Trim silences
start, end = audio.start_and_end_indices(out,
hparams.silence_threshold)
aud = aud[start:end]
preem_aud = preem_aud[start:end]
out = out[start:end]
constant_values = mulaw_quantize(0, hparams.quantize_channels)
out_dtype = np.int16
elif is_mulaw(hparams.input_type):
#[-1, 1]
out = mulaw(aud, hparams.quantize_channels)
constant_values = mulaw(0., hparams.quantize_channels)
out_dtype = np.float32
else:
#[-1, 1]
out = aud
constant_values = 0.
out_dtype = np.float32
# Compute the mel scale spectrogram from the audio
mel_spectrogram = audio.melspectrogram(preem_aud,
hparams).astype(np.float32)
mel_frames = mel_spectrogram.shape[1]
# if mel_frames > hparams.max_mel_frames and hparams.clip_mels_length:
# return None
#Compute the linear scale spectrogram from the audui
# linear_spectrogram = audio.linearspectrogram(preem_aud, hparams).astype(np.float32)
# linear_frames = linear_spectrogram.shape[1]
#sanity check
# assert linear_frames == mel_frames
if hparams.use_lws:
#Ensure time resolution adjustement between audio and mel-spectrogram
fft_size = hparams.n_fft if hparams.win_size is None else hparams.win_size
l, r = audio.pad_lr(aud, fft_size, audio.get_hop_size(hparams))
#Zero pad audio signal
out = np.pad(out, (l, r),
mode='constant',
constant_values=constant_values)
else:
#Ensure time resolution adjustement between audio and mel-spectrogram
l_pad, r_pad = audio.librosa_pad_lr(aud, hparams.n_fft,
audio.get_hop_size(hparams),
hparams.wavenet_pad_sides)
#Reflect pad audio signal on the right (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (l_pad, r_pad),
mode='constant',
constant_values=constant_values)
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
#time resolution adjustement
#ensure length of raw audio is multiple of hop size so that we can use
#transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
time_steps = len(out)
#Get speaker embedding
#spk_emb = scoring.get_embedding(spk_emb_model, spk_emb_buckets, audio_path)
# Write the spectrogram and audio to disk
audio_filename = 'audio-{}.npy'.format(index)
mel_filename = 'mel-{}.npy'.format(index)
linear_filename = 'linear-{}.npy'.format(index)
spk_emb_filename = 'spkemb-{}.npy'.format(index)
# np.save(os.path.join(audio_dir, audio_filename), out.astype(out_dtype), allow_pickle=False)
np.save(os.path.join(mel_dir, mel_filename),
mel_spectrogram.T,
allow_pickle=False)
# np.save(os.path.join(linear_dir, linear_filename), linear_spectrogram.T, allow_pickle=False)
#np.save(os.path.join(spk_emb_dir, spk_emb_filename), spk_emb, allow_pickle=False)
basename = os.path.basename(audio_path)
# Return a tuple describing this training example
return (dataset, audio_filename, mel_filename, linear_filename,
spk_emb_filename, time_steps, mel_frames, text, emt_label,
spk_label, basename, sex)
def _process_utterance(out_dir, index, wav_path, pinyin, hparams):
'''Preprocesses a single utterance audio/text pair.
This writes the mel and linear scale spectrograms to disk and returns a tuple to write
to the train.txt file.
Args:
out_dir: The directory to write the spectrograms into
index: The numeric index to use in the spectrogram filenames.
wav_path: Path to the audio file containing the speech input
pinyin: The pinyin of Chinese spoken in the input audio file
Returns:
A (spectrogram_filename, mel_filename, n_frames, text) tuple to write to train.txt
'''
mel_dir = out_dir + "/mels"
linear_dir = out_dir + "/linear"
wav_dir = out_dir + "/audio"
# Load the audio to a numpy array:
wav = audio.load_wav(wav_path, sr=hparams.sample_rate)
print("debug wav_path:", wav_path)
#rescale wav
if hparams.rescale:
wav = wav / np.abs(wav).max() * hparams.rescaling_max
#M-AILABS extra silence specific
if hparams.trim_silence:
wav = audio.trim_silence(wav, hparams)
#Mu-law quantize
if is_mulaw_quantize(hparams.input_type):
#[0, quantize_channels)
out = mulaw_quantize(wav, hparams.quantize_channels)
#Trim silences
start, end = audio.start_and_end_indices(out,
hparams.silence_threshold)
wav = wav[start:end]
out = out[start:end]
constant_values = mulaw_quantize(0, hparams.quantize_channels)
out_dtype = np.int16
elif is_mulaw(hparams.input_type):
#[-1, 1]
out = mulaw(wav, hparams.quantize_channels)
constant_values = mulaw(0., hparams.quantize_channels)
out_dtype = np.float32
else:
#[-1, 1]
out = wav
constant_values = 0.
out_dtype = np.float32
# Compute a mel-scale spectrogram from the wav:
#mel_spectrogram = audio.melspectrogram(wav).astype(np.float32)
mel_spectrogram = audio.melspectrogram(wav, hparams).astype(np.float32)
mel_frames = mel_spectrogram.shape[1]
if mel_frames > hparams.max_mel_frames and hparams.clip_mels_length:
print("debug --- drop wav_path:", wav_path, "mel_frames:", mel_frames)
return None
# Compute the linear-scale spectrogram from the wav:
#spectrogram = audio.spectrogram(wav).astype(np.float32)
#n_frames = spectrogram.shape[1]
linear_spectrogram = audio.linearspectrogram(wav,
hparams).astype(np.float32)
linear_frames = linear_spectrogram.shape[1]
#sanity check
assert linear_frames == mel_frames
if hparams.use_lws:
#Ensure time resolution adjustement between audio and mel-spectrogram
fft_size = hparams.n_fft if hparams.win_size is None else hparams.win_size
l, r = audio.pad_lr(wav, fft_size, audio.get_hop_size(hparams))
#Zero pad audio signal
out = np.pad(out, (l, r),
mode='constant',
constant_values=constant_values)
else:
#Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(wav, hparams.n_fft,
audio.get_hop_size(hparams))
#Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, pad, mode='reflect')
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
#time resolution adjustement
#ensure length of raw audio is multiple of hop size so that we can use
#transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
time_steps = len(out)
# Write the spectrograms to disk:
#spectrogram_filename = 'thchs30-spec-%05d.npy' % index
#mel_filename = 'thchs30-mel-%05d.npy' % index
#np.save(os.path.join(out_dir, spectrogram_filename), spectrogram.T, allow_pickle=False)
#np.save(os.path.join(out_dir, mel_filename), mel_spectrogram.T, allow_pickle=False)
audio_filename = 'audio-{}.npy'.format(index)
mel_filename = 'mel-{}.npy'.format(index)
linear_filename = 'linear-{}.npy'.format(index)
np.save(os.path.join(wav_dir, audio_filename),
out.astype(out_dtype),
allow_pickle=False)
np.save(os.path.join(mel_dir, mel_filename),
mel_spectrogram.T,
allow_pickle=False)
np.save(os.path.join(linear_dir, linear_filename),
linear_spectrogram.T,
allow_pickle=False)
print("debug save wav file:", os.path.join(wav_dir, audio_filename))
# Return a tuple describing this training example:
return (audio_filename, mel_filename, linear_filename, time_steps,
mel_frames, pinyin)
def re_save_all(wav_path, audio_filename, mel_filename, linear_filename):
try:
# Load the audio as numpy array
aud = audio.load_audio(wav_path, sr=hparams.sample_rate)
except FileNotFoundError: #catch missing wav exception
print(
'file {} present in csv metadata is not present in wav folder. skipping!'
.format(wav_path))
return None
#Trim lead/trail silences
if hparams.trim_silence:
aud = audio.trim_silence(aud, hparams)
#Pre-emphasize
preem_aud = audio.preemphasis(aud, hparams.preemphasis,
hparams.preemphasize)
#rescale audio
if hparams.rescale:
aud = aud / np.abs(aud).max() * hparams.rescaling_max
preem_aud = preem_aud / np.abs(preem_aud).max() * hparams.rescaling_max
#Assert all audio is in [-1, 1]
if (aud > 1.).any() or (aud < -1.).any():
raise RuntimeError('audio has invalid value: {}'.format(wav_path))
if (preem_aud > 1.).any() or (preem_aud < -1.).any():
raise RuntimeError('audio has invalid value: {}'.format(wav_path))
#[-1, 1]
out = aud
constant_values = 0.
out_dtype = np.float32
# Compute the mel scale spectrogram from the audio
mel_spectrogram = audio.melspectrogram(preem_aud,
hparams).astype(np.float32)
mel_frames = mel_spectrogram.shape[1]
#Compute the linear scale spectrogram from the audui
linear_spectrogram = audio.linearspectrogram(preem_aud,
hparams).astype(np.float32)
linear_frames = linear_spectrogram.shape[1]
#sanity check
assert linear_frames == mel_frames
#Ensure time resolution adjustement between audio and mel-spectrogram
l_pad, r_pad = audio.librosa_pad_lr(aud, hparams.n_fft,
audio.get_hop_size(hparams),
hparams.wavenet_pad_sides)
#Reflect pad audio signal on the right (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (l_pad, r_pad),
mode='constant',
constant_values=constant_values)
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
#time resolution adjustement
#ensure length of raw audio is multiple of hop size so that we can use
#transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
# Write the spectrogram and audio to disk
np.save(audio_filename, out.astype(out_dtype), allow_pickle=False)
np.save(mel_filename, mel_spectrogram.T, allow_pickle=False)
np.save(linear_filename, linear_spectrogram.T, allow_pickle=False)
# sanity check
assert linear_frames == mel_frames
>>>>>>> f33090dba9ba4bc52db8367abdc48841d13c48f8
if hparams.use_lws:
# Ensure time resolution adjustement between audio and mel-spectrogram
fft_size = hparams.n_fft if hparams.win_size is None else hparams.win_size
l, r = audio.pad_lr(wav, fft_size, audio.get_hop_size(hparams))
# Zero pad audio signal
<<<<<<< HEAD
out = np.pad(out, (l, r), mode='constant', constant_values=constant_values)
else:
# Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(wav, hparams.n_fft, audio.get_hop_size(hparams))
=======
out = np.pad(out, (l, r), mode='constant',
constant_values=constant_values)
else:
# Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(
wav, hparams.n_fft, audio.get_hop_size(hparams))
>>>>>>> f33090dba9ba4bc52db8367abdc48841d13c48f8
# Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, pad, mode='reflect')
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
# time resolution adjustement
def _process_utterance(mel_dir, index, wav_path, start, end, hparams):
"""
Preprocesses a single utterance wav/text pair
this writes the mel scale spectogram to disk and return a tuple to write
to the train.txt file
Args:
- mel_dir: the directory to write the mel spectograms into
- index: the numeric index to use in the spectogram filename
- wav_path: path to the audio file containing the speech input
- start, end: start, end points of speech
- hparams: hyper parameters
Returns:
- A tuple: (wav_path, mel_filename, time_steps, mel_frames, start, end)
"""
try:
# Load the audio as numpy array
wav = audio.load_wav(wav_path, sr=hparams.sample_rate)
except FileNotFoundError: #catch missing wav exception
print('file {} present in csv metadata is not present in wav folder. skipping!'.format(wav_path))
return None
start += 1 * hparams.sample_rate
end += 1 * hparams.sample_rate
#rescale wav
if hparams.rescale:
wav = wav / np.abs(wav).max() * hparams.rescaling_max
#M-AILABS extra silence specific
if hparams.trim_silence:
wav = audio.trim_silence(wav, hparams)
#[-1, 1]
out = wav
out_dtype = np.float32
# Compute the mel scale spectrogram from the wav
mel_spectrogram = audio.melspectrogram(wav, hparams).astype(out_dtype)
mel_frames = mel_spectrogram.shape[1]
# Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(wav, hparams.n_fft, audio.get_hop_size(hparams))
# Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (0, pad), mode='reflect')
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
# time resolution adjustement
# ensure length of raw audio is multiple of hop size so that we can use
# transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
time_steps = len(out)
start = round(start/int(time_steps / mel_frames))
end = round(end/int(time_steps / mel_frames))
# Write the spectrogram and audio to disk
mel_filename = 'mel-{}.npy'.format(index)
np.save(os.path.join(mel_dir, mel_filename), mel_spectrogram.T, allow_pickle=False)
# Return a tuple describing this training example
return (wav_path, mel_filename, time_steps, mel_frames, start, end)
def build_from_path_ispl(hparams, input_dirs, mel_dir, label_dir, tqdm=lambda x: x):
"""
Preprocesses the speech dataset from a gven input path to given output directories
Args:
- hparams: hyper parameters
- input_dirs: input directory that contains the files to prerocess
- mel_dir: output directory of the preprocessed speech mel-spectrogram dataset
- label_dir: the directory to write the label into
- tqdm: Optional, provides a nice progress bar
Returns:
- A list of tuple describing the train examples. this should be written to train.txt
"""
# We use ProcessPoolExecutor to parallelize across processes, this is just for
# optimization purposes and it can be omited
futures = []
index = 1
for input_dir in input_dirs:
files = find_files(os.path.join(input_dir))
for wav_path in files:
file_name = wav_path.split("\\")[-1]
if int(file_name.split('.')[0]) <= 10:
label_path = wav_path.split("\\")[0] + '/label.txt'
with open(label_path, encoding='utf-8') as f:
lines = f.readlines()
for line in lines:
if file_name in line:
labels = line.replace('[', '').replace(']', '').split(':')[1].replace(',\n', '').split(',')
start = []
end = []
for idx in range(0, len(labels), 2):
start.append(int(labels[idx]))
end.append(int(labels[idx+1]))
try:
# Load the audio as numpy array
wav = audio.load_wav(wav_path, sr=hparams.sample_rate)
except FileNotFoundError: # catch missing wav exception
print('file {} present in csv metadata is not present in wav folder. skipping!'.format(wav_path))
return None
# rescale wav
if hparams.rescale:
wav = wav / np.abs(wav).max() * hparams.rescaling_max
# M-AILABS extra silence specific
if hparams.trim_silence:
wav = audio.trim_silence(wav, hparams)
# [-1, 1]
out = wav
out_dtype = np.float32
if int(file_name.split('.')[0]) <= 10:
label = np.zeros_like(out)
for idx in range(len(start)):
start[idx] = int(start[idx] / 1000 * hparams.sample_rate)
end[idx] = int(end[idx] / 1000 * hparams.sample_rate)
label[start[idx]:end[idx]] = 1.
else:
label = wav_path.split('.')[0] + '.label'
with open(label, encoding='utf-8') as f:
lines = f.readlines()
label = np.asarray([int(line.strip('\n')) for line in lines])
# Compute the mel scale spectrogram from the wav
mel_spectrogram = audio.melspectrogram(wav, hparams).astype(out_dtype)
mel_spectrogram = mel_spectrogram[:, -len(label):]
mel_frames = mel_spectrogram.shape[1]
# Ensure time resolution adjustement between audio and mel-spectrogram
pad = audio.librosa_pad_lr(wav, hparams.n_fft, audio.get_hop_size(hparams))
if int(file_name.split('.')[0]) <= 10:
# Reflect pad audio signal (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (0, pad), mode='reflect')
label = np.pad(label, (0, pad), mode='reflect')
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
# time resolution adjustement
# ensure length of raw audio is multiple of hop size so that we can use
# transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
label = label[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
label = label[::audio.get_hop_size(hparams)]
time_steps = len(out)
else:
time_steps = len(out)
# Write the spectrogram and audio to disk
mel_filename = 'mel-{}.npy'.format(index)
label_filename = 'label-{}.npy'.format(index)
np.save(os.path.join(mel_dir, mel_filename), mel_spectrogram.T, allow_pickle=False)
np.save(os.path.join(label_dir, label_filename), label, allow_pickle=False)
futures.append((wav_path, mel_filename, time_steps, mel_frames, label_filename))
index += 1
return [future for future in tqdm(futures)]
def _process_utterance(out_dir, index, wav_path, text, hparams):
"""
Preprocesses a single utterance wav/text pair
this writes the mel scale spectogram to disk and return a tuple to write
to the train.txt file
Args:
- out_dir: the directory to write the msgpack into
- index: the numeric index to use in the spectogram filename
- wav_path: path to the audio file containing the speech input
- text: text spoken in the input audio file
- hparams: hyper parameters
Returns:
- A tuple: (audio_filename, mel_filename, linear_filename, time_steps, mel_frames, linear_frames, text)
"""
try:
# Load the audio as numpy array
wav = audio.load_wav(wav_path, sr=hparams.sample_rate)
except FileNotFoundError: # catch missing wav exception
print('file {} present in csv metadata is not present in wav folder. skipping!'.format(
wav_path))
return None
# Trim lead/trail silences
if hparams.trim_silence:
wav = audio.trim_silence(wav, hparams)
# Pre-emphasize
preem_wav = audio.preemphasis(wav, hparams.preemphasis, hparams.preemphasize)
# rescale wav
if hparams.rescale:
wav = wav / np.abs(wav).max() * hparams.rescaling_max
preem_wav = preem_wav / np.abs(preem_wav).max() * hparams.rescaling_max
# Assert all audio is in [-1, 1]
if (wav > 1.).any() or (wav < -1.).any():
raise RuntimeError('wav has invalid value: {}'.format(wav_path))
if (preem_wav > 1.).any() or (preem_wav < -1.).any():
raise RuntimeError('wav has invalid value: {}'.format(wav_path))
# [-1, 1]
out = wav
constant_values = 0.
out_dtype = np.float32
# Compute the mel scale spectrogram from the wav
mel_spectrogram = audio.melspectrogram(preem_wav, hparams).astype(np.float32)
mel_frames = mel_spectrogram.shape[1]
if mel_frames > hparams.max_mel_frames and hparams.clip_mels_length:
return None
# Compute the linear scale spectrogram from the wav
linear_spectrogram = audio.linearspectrogram(preem_wav, hparams).astype(np.float32)
linear_frames = linear_spectrogram.shape[1]
# sanity check
assert linear_frames == mel_frames
# Ensure time resolution adjustement between audio and mel-spectrogram
l_pad, r_pad = audio.librosa_pad_lr(wav, audio.get_hop_size(hparams), hparams.pad_sides)
# Reflect pad audio signal on the right (Just like it's done in Librosa to avoid frame inconsistency)
out = np.pad(out, (l_pad, r_pad), mode='constant', constant_values=constant_values)
assert len(out) >= mel_frames * audio.get_hop_size(hparams)
# time resolution adjustement
# ensure length of raw audio is multiple of hop size so that we can use
# transposed convolution to upsample
out = out[:mel_frames * audio.get_hop_size(hparams)]
assert len(out) % audio.get_hop_size(hparams) == 0
time_steps = len(out)
npz_filename = '{}.npz'.format(index)
r = hparams.outputs_per_step
if hparams.symmetric_mels:
_pad_value = -hparams.max_abs_value
else:
_pad_value = 0.
# +2r for head and tail silence
mel_spec = np.pad(mel_spectrogram.T, [[r, r], [0, 0]], 'constant', constant_values=_pad_value)
linear_spec = np.pad(linear_spectrogram.T, [[r, r], [0, 0]], 'constant', constant_values=_pad_value)
target_length = len(linear_spec)
target_frames = (target_length // r + 1) * r
num_pad = target_frames - target_length
if num_pad != 0:
linear_spec = np.pad(linear_spec, ((0, num_pad), (0, 0)), "constant", constant_values=_pad_value)
mel_spec = np.pad(mel_spec, ((0, num_pad), (0, 0)), "constant", constant_values=_pad_value)
stop_token = np.concatenate(
[np.zeros(target_frames - 1, dtype=np.float32), np.ones(1, dtype=np.float32)],
axis=0)
data = {
'mel': mel_spec,
'linear': linear_spec,
'audio': out.astype(out_dtype),
'input_data': np.asarray(text_to_sequence(text)),
'time_steps': time_steps,
'mel_frames': target_frames,
'text': text,
'stop_token': stop_token,
}
dumps_msgpack(data, os.path.join(out_dir, npz_filename))
# Return a tuple describing this training example
return npz_filename, time_steps, mel_frames, text
