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Update Lhotse's augmentation API usage #5

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Update Lhotse's augmentation API usage #5

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d82794c
Update Lhotse's augmentation API usage
pzelasko Nov 13, 2020
b00a787
update executor
pzelasko Nov 13, 2020
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7 changes: 4 additions & 3 deletions egs/librispeech/asr/simple_v1/prepare.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
#!/usr/bin/env python3

import multiprocessing
import os
from concurrent.futures import ProcessPoolExecutor
from pathlib import Path
Expand Down Expand Up @@ -37,14 +38,14 @@
num_jobs = 1
for partition, manifests in librispeech_manifests.items():
print(partition)
with LilcomFilesWriter(f'{output_dir}/feats_{partition}'
) as storage, ProcessPoolExecutor(num_jobs) as ex:
with LilcomFilesWriter(f'{output_dir}/feats_{partition}') as storage, \
ProcessPoolExecutor(num_jobs, mp_context=multiprocessing.get_context("spawn")) as ex:
cut_set = CutSet.from_manifests(
recordings=manifests['recordings'],
supervisions=manifests['supervisions']).compute_and_store_features(
extractor=Fbank(),
storage=storage,
augmenter=augmenter if 'train' in partition else None,
augment_fn=augmenter if 'train' in partition else None,
executor=ex)
librispeech_manifests[partition]['cuts'] = cut_set
cut_set.to_json(output_dir + f'/cuts_{partition}.json.gz')
Expand Down