def parse_audio(audio_path: str, audio_extension: str = 'pcm') -> Tensor:
sound = load_audio(audio_path, extension=audio_extension)
melspectrogram = librosa.feature.melspectrogram(sound,
sr=16000,
n_mels=80,
n_fft=320,
hop_length=160)
log_melspectrogram = librosa.amplitude_to_db(melspectrogram)
log_melspectrogram = torch.FloatTensor(log_melspectrogram)
return log_melspectrogram
def __init__(self, *args, **kwargs):
"""
SpectrogramDataset that splits utterances into buckets based on their length.
Bucketing is done via numpy's histogram method.
Used by BucketingSampler to sample utterances from the same bin.
"""
super(SpectrogramDatasetWithLength, self).__init__(*args, **kwargs)
audio_paths = [path for (path, _) in self.ids]
audio_lengths = [len(load_audio(path)) for path in audio_paths]
hist, bin_edges = np.histogram(audio_lengths, bins="auto")
audio_samples_indices = np.digitize(audio_lengths, bins=bin_edges)
self.bins_to_samples = defaultdict(list)
for idx, bin_id in enumerate(audio_samples_indices):
self.bins_to_samples[bin_id].append(idx)
"""
This File is to inject noise on the training data tp increase robustness
"""
import argparse
import torch
import torchaudio
from data.data_loader import load_audio, NoiseInjection
parser = argparse.ArgumentParser()
parser.add_argument('--input-path', default='input.wav', help='The input audio to inject noise into')
parser.add_argument('--noise-path', default='noise.wav', help='The noise file to mix in')
parser.add_argument('--output-path', default='output.wav', help='The noise file to mix in')
parser.add_argument('--sample-rate', default=16000, help='Sample rate to save output as')
parser.add_argument('--noise-level', type=float, default=1.0,
help='The Signal to Noise ratio (higher means more noise)')
args = parser.parse_args()
noise_injector = NoiseInjection()
data = load_audio(args.input_path)
mixed_data = noise_injector.inject_noise_sample(data, args.noise_path, args.noise_level)
mixed_data = torch.tensor(mixed_data, dtype=torch.float).unsqueeze(1) # Add channels dim
torchaudio.save(args.output_path, mixed_data, args.sample_rate)
print('Saved mixed file to %s' % args.output_path)
import argparse
import torch
import torchaudio
from data.data_loader import load_audio, NoiseInjection
parser = argparse.ArgumentParser()
parser.add_argument('--input-path', default='input.wav', help='The input audio to inject noise into')
parser.add_argument('--noise-path', default='noise.wav', help='The noise file to mix in')
parser.add_argument('--output-path', default='output.wav', help='The noise file to mix in')
parser.add_argument('--sample-rate', default=16000, help='Sample rate to save output as')
parser.add_argument('--noise-level', type=float, default=1.0,
help='The Signal to Noise ratio (higher means more noise)')
args = parser.parse_args()
noise_injector = NoiseInjection()
data = load_audio(args.input_path)
mixed_data = noise_injector.inject_noise_sample(data, args.noise_path, args.noise_level)
mixed_data = torch.tensor(mixed_data, dtype=torch.float).unsqueeze(1) # Add channels dim
torchaudio.save(args.output_path, mixed_data, args.sample_rate)
print('Saved mixed file to %s' % args.output_path)
def process_sample(q, samples, args, labels, invalid_counters):
logger = logging.getLogger('data_prep')
while True:
score_path = q.get()
if score_path is None:
break
# Errors counters, for debug.
# Per file:
clean_errors = 0
split_errors = 0
# Per chunk:
tiefix_errors = 0
hum2mid_errors = 0
audio_errors = 0
krnseq_errors = 0
double_symbol_errors = 0
encoding_errors = 0
length_errors = 0
# Remove grace notes, ornaments, etc...
kern = Kern(Path(args.data_dir) / score_path,
remove_splits=args.remove_splits)
kern.spines.override_instruments(args.instruments)
try:
if not kern.clean():
logger.error(f'Cannot clean kern {score_path}')
clean_errors += 1
continue
except Exception as e:
logger.exception(
f"Exception while cleaning {score_path} audio. Reason: {e}")
clean_errors += 1
continue
root_path = Path(args.out_dir) / score_path.parent
root_path.mkdir(parents=True, exist_ok=True)
krn_path = Path(args.out_dir) / score_path
krn_path_clean = krn_path.with_suffix('.clean.krn')
kern.save(krn_path_clean)
# Set seed to ensure same chunk sizes and tempo scaling
np.random.seed(bytearray(score_path.name, 'utf-8'))
try:
kern_chunks = kern.split(args.chunk_sizes, args.train_stride)
except Exception as e:
logger.exception(f'Exception {e} while splitting {score_path}')
split_errors += 1
continue
# random scale between +ts and -ts
ts = 1 + args.tempo_scaling * (2 * np.random.rand(len(kern_chunks)) -
1)
for i, kern in enumerate(kern_chunks):
chunk_path = krn_path.with_suffix(f'.{i:03d}.krn')
kern.save(chunk_path)
# Fix ties with tiefix command
process = subprocess.run(['tiefix', chunk_path],
capture_output=True,
encoding='iso-8859-1')
if (process.returncode != 0):
logger.error(
f"tiefix error={process.returncode} on {chunk_path}")
logger.error(process.stdout)
tiefix_errors += 1
continue
kern = Kern(data=process.stdout, remove_splits=args.remove_splits)
kern.save(chunk_path)
audio_path = chunk_path.with_suffix('.flac')
if args.resynthesize or not audio_path.exists():
mid_path = chunk_path.with_suffix('.mid')
# Tempo and instrumment extracted from *MM and *I indications
status = os.system(
f'hum2mid {str(chunk_path)} -C -v 100 -t {ts[i]} -o {str(mid_path)} >/dev/null 2>&1' # noqa E501
)
if (os.WEXITSTATUS(status) != 0):
logger.error(f"hum2mid error={status} on {chunk_path}")
hum2mid_errors += 1
continue
status = os.system(
f'fluidsynth --sample-rate={args.sample_rate} -O s16 -T raw -i -l -F - {args.soundfont} {str(mid_path)} | ' # noqa E501
f'ffmpeg -y -f s16le -ar {args.sample_rate} -ac 2 -i pipe: ' # noqa E501
f'-ar {args.sample_rate} -ac 1 -ab {args.bit_rate} -strict -2 {str(audio_path)} 2>/dev/null' # noqa E501
)
try:
y = load_audio(str(audio_path))
except Exception as e:
logger.exception(
f"Exception while loading {chunk_path} audio. Reason: {e}")
audio_errors += 1
continue
duration = len(y) / args.sample_rate
try:
krnseq = kern.tosequence()
except Exception as e:
logger.exception(f"Discarded {chunk_path} due to error in kern"
f" sequence conversion. Reason {e}")
krnseq_errors += 1
continue
if krnseq is None:
logger.warning(
f"Discarded {chunk_path} for double dots/sharps/flats")
double_symbol_errors += 1
continue
try:
seq = labels.encode(krnseq)
except Exception as e:
logger.warning(f"Discarded {chunk_path} during label encoding."
f" Reason: {e}")
encoding_errors += 1
continue
seqlen = labels.ctclen(seq)
krnseq_path = chunk_path.with_suffix('.krnseq')
krnseq_path.write_text(krnseq)
seq_path = chunk_path.with_suffix('.seq')
with seq_path.open(mode="wb") as f:
f.write(pickle.dumps(seq))
if duration > args.max_duration or \
duration < seqlen * args.min_duration_symbol:
logger.warning(f"Sequence too long in {chunk_path} "
f"len={seqlen} duration={duration:.2f}")
length_errors += 1
continue
samples.append([str(audio_path), str(seq_path), duration])
invalid_counters['clean_errors'].append(clean_errors)
invalid_counters['split_errors'].append(split_errors)
invalid_counters['tiefix_errors'].append(tiefix_errors)
invalid_counters['hum2mid_errors'].append(hum2mid_errors)
invalid_counters['audio_errors'].append(audio_errors)
invalid_counters['krnseq_errors'].append(krnseq_errors)
invalid_counters['double_symbol_errors'].append(double_symbol_errors)
invalid_counters['encoding_errors'].append(encoding_errors)
invalid_counters['length_errors'].append(length_errors)
def get_signal(self, path):
signal = load_audio(path)
signal = Variable(signal, requires_grad=True)
return signal
from data.data_loader import load_audio, NoiseInjection
parser = argparse.ArgumentParser()
parser.add_argument('--input-path',
default='input.wav',
help='The input audio to inject noise into')
parser.add_argument('--noise-path',
default='noise.wav',
help='The noise file to mix in')
parser.add_argument('--output-path',
default='output.wav',
help='The noise file to mix in')
parser.add_argument('--sample-rate',
default=16000,
help='Sample rate to save output as')
parser.add_argument('--noise-level',
type=float,
default=1.0,
help='The Signal to Noise ratio (higher means more noise)')
args = parser.parse_args()
noise_injector = NoiseInjection()
data, sample_rate_ = load_audio(args.input_path)
assert sample_rate_ == args.sample_rate
mixed_data = noise_injector.inject_noise_sample(data, args.noise_path,
args.noise_level)
mixed_data = torch.tensor(mixed_data,
dtype=torch.float).unsqueeze(1) # Add channels dim
torchaudio.save(args.output_path, mixed_data, args.sample_rate)
print('Saved mixed file to %s' % args.output_path)
def combine_datasets(data_dir, dataset_config, sample_rate=22050):
logger = config_logger('combine_datasets', console_level='INFO')
if not isinstance(data_dir, Path):
data_dir = Path(data_dir)
group = data_dir.name
# Label file must be the same. Just make a copy and rename.
labels_path = [
i for i in data_dir.rglob(f'*{dataset_config}/labels*.json')
][0]
outpath = data_dir / f'labels_{group}_{dataset_config}.json'
logger.info(f'Saving encoder labels to {outpath}')
outpath.write_text(labels_path.read_text())
dataset_partitions = ['test', 'train', 'val']
extension = 'csv'
for dataset_partition in dataset_partitions:
logger.info(
f'Looking for partition {dataset_partition} from configuration {dataset_config}.'
)
all_filenames = [
i for i in data_dir.rglob(
f'*{dataset_config}/{dataset_partition}*.{extension}')
]
logger.info(f'Found {len(all_filenames)} files.')
# combine all files in the list
combined_csv = pd.concat([
pd.read_csv(f, header=None).assign(filename=f.name)
for f in all_filenames
]).rename(columns={
0: "audio",
1: "seq"
})
logger.info(combined_csv.groupby('filename')['audio'].count())
logger.info(
f"Combined partition {dataset_partition}: {combined_csv['audio'].count()} samples."
)
durations = []
total_duration = 0
audio_errors = 0
for audio_file in combined_csv['audio'].tolist():
try:
y = load_audio(str(audio_file))
duration = len(y) / sample_rate
except Exception as e:
logger.exception(
f"Exception while loading {audio_file} audio. Reason: {e}")
audio_errors += 1
duration = 0
continue
durations.append(duration)
combined_csv = combined_csv.assign(duration=durations)
# SortaGrad
combined_csv = combined_csv.sort_values(by='duration')
total_duration = combined_csv['duration'].sum()
logger.info(f'Total duration: {total_duration/60/60} hours.')
logger.info(f'Found {audio_errors} errors during loading.')
# export to csv
outpath = data_dir / f'{dataset_partition}_{group}_{dataset_config}.{extension}'
logger.info(f'Saving to {outpath}')
combined_csv.drop(['filename', 'duration'],
axis=1).to_csv(outpath,
index=False,
header=False,
encoding='iso-8859-1')
def process_sample(q, samples, args, labels):
while True:
score_path = q.get()
if score_path is None:
break
# Remove grace notes, ornaments, etc...
kern = Kern(Path(args.data_dir) / score_path)
kern.spines.override_instruments(args.instruments)
try:
if not kern.clean():
print(f'Cannot clean kern {score_path}')
continue
except Exception as e:
print(f"Exception while cleaning {score_path} audio. Reason: {e}")
continue
root_path = Path(args.out_dir) / score_path.parent
root_path.mkdir(parents=True, exist_ok=True)
krn_path = Path(args.out_dir) / score_path
# Set seed to ensure same chunk sizes and tempo scaling
np.random.seed(bytearray(score_path.name, 'utf-8'))
try:
kern_chunks = kern.split(args.chunk_sizes, args.train_stride)
except Exception as e:
print(f'Exception {e} while splitting {score_path}')
continue
# random scale between +ts and -ts
ts = 1 + args.tempo_scaling * (2 * np.random.rand(len(kern_chunks)) -
1)
for i, kern in enumerate(kern_chunks):
chunk_path = krn_path.with_suffix(f'.{i:03d}.krn')
kern.save(chunk_path)
# Fix ties with tiefix command
process = subprocess.run(['tiefix', chunk_path],
encoding='iso-8859-1',
stdout=subprocess.PIPE)
if (process.returncode != 0):
print(f"tiefix error={process.returncode} on {chunk_path}")
print(process.stdout)
continue
kern = Kern(data=process.stdout)
kern.save(chunk_path)
audio_path = chunk_path.with_suffix('.flac')
if args.resynthesize or not audio_path.exists():
mid_path = chunk_path.with_suffix('.mid')
# Tempo and instrumment extracted from *MM and *I indications
status = os.system(
f'hum2mid {str(chunk_path)} -C -v 100 -t {ts[i]} -o {str(mid_path)} >/dev/null 2>&1'
)
if (os.WEXITSTATUS(status) != 0):
print(f"hum2mid error={status} on {krn_path}")
continue
status = os.system(
f'fluidsynth --sample-rate={args.sample_rate} -O s16 -T raw -i -l -F - {args.soundfont} {str(mid_path)} | '
f'ffmpeg -y -f s16le -ar {args.sample_rate} -ac 2 -i pipe: '
f'-ar {args.sample_rate} -ac 1 -ab {args.bit_rate} -strict -2 {str(audio_path)} 2>/dev/null'
)
try:
y = load_audio(str(audio_path))
except Exception as e:
print(
f"Exception while loading {chunk_path} audio. Reason: {e}")
continue
duration = len(y) / args.sample_rate
krnseq = kern.tosequence()
if krnseq is None:
#print(f"Discarded {chunk_path} for double dots/sharps/flats")
continue
try:
seq = labels.encode(krnseq)
except Exception as e:
print(f"Discarded {chunk_path}. Reason: {e}")
continue
seqlen = labels.ctclen(seq)
krnseq_path = chunk_path.with_suffix('.krnseq')
krnseq_path.write_text(krnseq)
seq_path = chunk_path.with_suffix('.seq')
with seq_path.open(mode="wb") as f:
f.write(pickle.dumps(seq))
if duration > args.max_duration or duration < seqlen * args.min_duration_symbol:
#print(f"Sequence too long in {chunk_path} len={seqlen} duration={duration:.2f}")
continue
samples.append([str(audio_path), str(seq_path), duration])
