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support download, data prep, and fbank
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egs/gigaspeech/ASR/local/compute_fbank_gigaspeech.py
Executable file
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egs/gigaspeech/ASR/local/compute_fbank_gigaspeech.py
Executable file
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#!/usr/bin/env python3
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# Copyright 2021 Xiaomi Corp. (authors: Fangjun Kuang)
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#
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# See ../../../../LICENSE for clarification regarding multiple authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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This file computes fbank features of the GigaSpeech dataset.
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It looks for manifests in the directory data/manifests.
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The generated fbank features are saved in data/fbank.
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"""
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import logging
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import os
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from pathlib import Path
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import torch
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from lhotse import CutSet, Fbank, FbankConfig, LilcomHdf5Writer
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from lhotse.recipes.utils import read_manifests_if_cached
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from icefall.utils import get_executor
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# Torch's multithreaded behavior needs to be disabled or
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# it wastes a lot of CPU and slow things down.
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# Do this outside of main() in case it needs to take effect
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# even when we are not invoking the main (e.g. when spawning subprocesses).
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torch.set_num_threads(1)
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torch.set_num_interop_threads(1)
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def compute_fbank_gigaspeech():
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src_dir = Path("data/manifests")
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output_dir = Path("data/fbank")
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num_jobs = min(10, os.cpu_count())
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num_mel_bins = 80
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dataset_parts = (
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"XL",
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"DEV",
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"TEST",
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)
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manifests = read_manifests_if_cached(
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dataset_parts=dataset_parts,
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output_dir=src_dir,
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prefix="gigaspeech",
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suffix="jsonl.gz",
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)
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assert manifests is not None
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extractor = Fbank(FbankConfig(num_mel_bins=num_mel_bins))
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with get_executor() as ex: # Initialize the executor only once.
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for partition, m in manifests.items():
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if (output_dir / f"cuts_{partition}.jsonl.gz").is_file():
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logging.info(f"{partition} already exists - skipping.")
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continue
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logging.info(f"Processing {partition}")
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cut_set = CutSet.from_manifests(
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recordings=m["recordings"],
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supervisions=m["supervisions"],
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)
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if "train" in partition:
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cut_set = (
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cut_set
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+ cut_set.perturb_speed(0.9)
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+ cut_set.perturb_speed(1.1)
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)
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cut_set = cut_set.compute_and_store_features(
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extractor=extractor,
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storage_path=f"{output_dir}/feats_{partition}",
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# when an executor is specified, make more partitions
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num_jobs=num_jobs if ex is None else 80,
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executor=ex,
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storage_type=LilcomHdf5Writer,
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)
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cut_set.to_json(output_dir / f"cuts_{partition}.jsonl.gz")
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if __name__ == "__main__":
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formatter = (
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"%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s"
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)
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logging.basicConfig(format=formatter, level=logging.INFO)
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compute_fbank_gigaspeech()
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1
egs/gigaspeech/ASR/local/compute_fbank_musan.py
Symbolic link
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egs/gigaspeech/ASR/local/compute_fbank_musan.py
Symbolic link
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../../../librispeech/ASR/local/compute_fbank_musan.py
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#!/usr/bin/env bash
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set -eou pipefail
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nj=15
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stage=0
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stop_stage=100
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# We assume dl_dir (download dir) contains the following
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# directories and files. If not, they will be downloaded
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# by this script automatically.
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#
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# - $dl_dir/GigaSpeech
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# You can find audio, dict, GigaSpeech.json inside it.
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# You can apply for the download credentials by following
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# https://github.com/SpeechColab/GigaSpeech#dataset-download
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#
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# - $dl_dir/musan
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# This directory contains the following directories downloaded from
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# http://www.openslr.org/17/
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#
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# - music
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# - noise
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# - speech
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dl_dir=$PWD/download
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. shared/parse_options.sh || exit 1
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# vocab size for sentence piece models.
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# It will generate data/lang_bpe_xxx,
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# data/lang_bpe_yyy if the array contains xxx, yyy
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vocab_sizes=(
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5000
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2000
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1000
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500
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)
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# All files generated by this script are saved in "data".
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# You can safely remove "data" and rerun this script to regenerate it.
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mkdir -p data
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log() {
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# This function is from espnet
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local fname=${BASH_SOURCE[1]##*/}
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echo -e "$(date '+%Y-%m-%d %H:%M:%S') (${fname}:${BASH_LINENO[0]}:${FUNCNAME[1]}) $*"
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}
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log "dl_dir: $dl_dir"
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if [ $stage -le 0 ] && [ $stop_stage -ge 0 ]; then
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log "Stage 0: Download data"
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[ ! -e $dl_dir/GigaSpeech ] && mkdir -p $dl_dir/GigaSpeech
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# If you have pre-downloaded it to /path/to/GigaSpeech,
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# you can create a symlink
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#
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# ln -sfv /path/to/GigaSpeech $dl_dir/GigaSpeech
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#
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if [ ! -d $dl_dir/GigaSpeech/audio ] && [ ! -f $dl_dir/GigaSpeech.json ]; then
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# Check credentials.
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if [ ! -f $dl_dir/password ]; then
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echo -n "$0: Please apply for the download credentials by following"
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echo -n "https://github.com/SpeechColab/GigaSpeech#dataset-download"
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echo " and save it to $dl_dir/password."
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exit 1;
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fi
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PASSWORD=`cat $dl_dir/password 2>/dev/null`
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if [ -z "$PASSWORD" ]; then
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echo "$0: Error, $dl_dir/password is empty."
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exit 1;
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fi
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PASSWORD_MD5=`echo $PASSWORD | md5sum | cut -d ' ' -f 1`
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if [[ $PASSWORD_MD5 != "dfbf0cde1a3ce23749d8d81e492741b8" ]]; then
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echo "$0: Error, invalid $dl_dir/password."
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exit 1;
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fi
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lhotse download gigaspeech --subset auto --host tsinghua \
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$dl_dir/password $dl_dir/GigaSpeech
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fi
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# If you have pre-downloaded it to /path/to/musan,
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# you can create a symlink
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#
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# ln -sfv /path/to/musan $dl_dir/
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#
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if [ ! -d $dl_dir/musan ]; then
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lhotse download musan $dl_dir
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fi
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fi
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if [ $stage -le 1 ] && [ $stop_stage -ge 1 ]; then
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log "Stage 1: Prepare GigaSpeech manifest"
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# We assume that you have downloaded the GigaSpeech corpus
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# to $dl_dir/GigaSpeech
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mkdir -p data/manifests
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lhotse prepare gigaspeech --subset auto -j $nj \
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$dl_dir/GigaSpeech data/manifests
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fi
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if [ $stage -le 2 ] && [ $stop_stage -ge 2 ]; then
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log "Stage 2: Prepare musan manifest"
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# We assume that you have downloaded the musan corpus
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# to $dl_dir/musan
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mkdir -p data/manifests
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lhotse prepare musan $dl_dir/musan data/manifests
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fi
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if [ $stage -le 3 ] && [ $stop_stage -ge 3 ]; then
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log "Stage 3: Compute fbank for GigaSpeech"
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mkdir -p data/fbank
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./local/compute_fbank_gigaspeech.py
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fi
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if [ $stage -le 4 ] && [ $stop_stage -ge 4 ]; then
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log "Stage 4: Compute fbank for musan"
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mkdir -p data/fbank
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./local/compute_fbank_musan.py
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fi
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if [ $stage -le 5 ] && [ $stop_stage -ge 5 ]; then
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log "Stage 5: Prepare phone based lang"
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lang_dir=data/lang_phone
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mkdir -p $lang_dir
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(echo '!SIL SIL'; echo '<SPOKEN_NOISE> SPN'; echo '<UNK> SPN'; ) |
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cat - $dl_dir/lm/librispeech-lexicon.txt |
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sort | uniq > $lang_dir/lexicon.txt
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if [ ! -f $lang_dir/L_disambig.pt ]; then
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./local/prepare_lang.py --lang-dir $lang_dir
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fi
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fi
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if [ $stage -le 6 ] && [ $stop_stage -ge 6 ]; then
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log "Stage 6: Prepare BPE based lang"
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for vocab_size in ${vocab_sizes[@]}; do
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lang_dir=data/lang_bpe_${vocab_size}
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mkdir -p $lang_dir
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# We reuse words.txt from phone based lexicon
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# so that the two can share G.pt later.
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cp data/lang_phone/words.txt $lang_dir
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if [ ! -f $lang_dir/transcript_words.txt ]; then
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log "Generate data for BPE training"
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files=$(
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find "$dl_dir/LibriSpeech/train-clean-100" -name "*.trans.txt"
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find "$dl_dir/LibriSpeech/train-clean-360" -name "*.trans.txt"
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find "$dl_dir/LibriSpeech/train-other-500" -name "*.trans.txt"
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)
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for f in ${files[@]}; do
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cat $f | cut -d " " -f 2-
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done > $lang_dir/transcript_words.txt
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fi
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./local/train_bpe_model.py \
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--lang-dir $lang_dir \
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--vocab-size $vocab_size \
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--transcript $lang_dir/transcript_words.txt
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if [ ! -f $lang_dir/L_disambig.pt ]; then
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./local/prepare_lang_bpe.py --lang-dir $lang_dir
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fi
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done
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fi
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if [ $stage -le 7 ] && [ $stop_stage -ge 7 ]; then
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log "Stage 7: Prepare bigram P"
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for vocab_size in ${vocab_sizes[@]}; do
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lang_dir=data/lang_bpe_${vocab_size}
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if [ ! -f $lang_dir/transcript_tokens.txt ]; then
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./local/convert_transcript_words_to_tokens.py \
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--lexicon $lang_dir/lexicon.txt \
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--transcript $lang_dir/transcript_words.txt \
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--oov "<UNK>" \
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> $lang_dir/transcript_tokens.txt
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fi
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if [ ! -f $lang_dir/P.arpa ]; then
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./shared/make_kn_lm.py \
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-ngram-order 2 \
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-text $lang_dir/transcript_tokens.txt \
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-lm $lang_dir/P.arpa
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fi
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if [ ! -f $lang_dir/P.fst.txt ]; then
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python3 -m kaldilm \
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--read-symbol-table="$lang_dir/tokens.txt" \
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--disambig-symbol='#0' \
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--max-order=2 \
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$lang_dir/P.arpa > $lang_dir/P.fst.txt
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fi
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done
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fi
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if [ $stage -le 8 ] && [ $stop_stage -ge 8 ]; then
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log "Stage 8: Prepare G"
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# We assume you have install kaldilm, if not, please install
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# it using: pip install kaldilm
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mkdir -p data/lm
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if [ ! -f data/lm/G_3_gram.fst.txt ]; then
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# It is used in building HLG
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python3 -m kaldilm \
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--read-symbol-table="data/lang_phone/words.txt" \
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--disambig-symbol='#0' \
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--max-order=3 \
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$dl_dir/lm/3-gram.pruned.1e-7.arpa > data/lm/G_3_gram.fst.txt
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fi
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if [ ! -f data/lm/G_4_gram.fst.txt ]; then
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# It is used for LM rescoring
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python3 -m kaldilm \
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--read-symbol-table="data/lang_phone/words.txt" \
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--disambig-symbol='#0' \
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--max-order=4 \
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$dl_dir/lm/4-gram.arpa > data/lm/G_4_gram.fst.txt
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fi
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fi
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if [ $stage -le 9 ] && [ $stop_stage -ge 9 ]; then
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log "Stage 9: Compile HLG"
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./local/compile_hlg.py --lang-dir data/lang_phone
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for vocab_size in ${vocab_sizes[@]}; do
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lang_dir=data/lang_bpe_${vocab_size}
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./local/compile_hlg.py --lang-dir $lang_dir
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done
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fi
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