# Copyright 2022 The HuggingFace Datasets Authors. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """TED-LIUM speech recognition dataset.""" import os import re from pathlib import Path import numpy as np from pydub import AudioSegment import datasets from datasets.tasks import AutomaticSpeechRecognition _LICENSE = "licensed under Creative Commons BY-NC-ND 3.0 (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en)" class TedliumReleaseConfig(datasets.BuilderConfig): """BuilderConfig for a release of the TED-LIUM dataset.""" def __init__(self, *, url, download_url, split_paths, citation, **kwargs): super(TedliumReleaseConfig, self).__init__(version=datasets.Version("1.0.1"), **kwargs) self.url = url self.download_url = download_url # List of split, path pairs containing the relative path within the # extracted tarball to the data for each split. self.split_paths = split_paths self.citation = citation def _make_builder_configs(): """Creates builder configs for all supported Tedlium dataset releases.""" release1 = TedliumReleaseConfig( name="release1", description="""\ The TED-LIUM corpus is English-language TED talks, with transcriptions, sampled at 16kHz. It contains about 118 hours of speech. This is the TED-LIUM corpus release 1, licensed under Creative Commons BY-NC-ND 3.0 (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). """, citation="""\ @inproceedings{rousseau2012tedlium, title={TED-LIUM: an Automatic Speech Recognition dedicated corpus}, author={Rousseau, Anthony and Del{\\'e}glise, Paul and Est{\\`e}ve, Yannick}, booktitle={Conference on Language Resources and Evaluation (LREC)}, pages={125--129}, year={2012} } """, url="https://www.openslr.org/7/", download_url="http://www.openslr.org/resources/7/TEDLIUM_release1.tar.gz", split_paths=[ (datasets.Split.TRAIN, os.path.join("TEDLIUM_release1", "train")), (datasets.Split.VALIDATION, os.path.join("TEDLIUM_release1", "dev")), (datasets.Split.TEST, os.path.join("TEDLIUM_release1", "test")), ], ) release2 = TedliumReleaseConfig( name="release2", description="""\ This is the TED-LIUM corpus release 2, licensed under Creative Commons BY-NC-ND 3.0 (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). All talks and text are property of TED Conferences LLC. The TED-LIUM corpus was made from audio talks and their transcriptions available on the TED website. We have prepared and filtered these data in order to train acoustic models to participate to the International Workshop on Spoken Language Translation 2011 (the LIUM English/French SLT system reached the first rank in the SLT task). Contains 1495 talks and transcripts. """, citation="""\ @inproceedings{rousseau2014tedlium2, title={Enhancing the {TED-LIUM} Corpus with Selected Data for Language Modeling and More {TED} Talks}, author={Rousseau, Anthony and Del{\\'e}glise, Paul and Est{\\`e}ve, Yannick}, booktitle={Conference on Language Resources and Evaluation (LREC)}, year={2014} } """, url="https://www.openslr.org/19/", download_url="http://www.openslr.org/resources/19/TEDLIUM_release2.tar.gz", split_paths=[ (datasets.Split.TRAIN, os.path.join("TEDLIUM_release2", "train")), (datasets.Split.VALIDATION, os.path.join("TEDLIUM_release2", "dev")), (datasets.Split.TEST, os.path.join("TEDLIUM_release2", "test")), ], ) release3 = TedliumReleaseConfig( name="release3", description="""\ This is the TED-LIUM corpus release 3, licensed under Creative Commons BY-NC-ND 3.0. All talks and text are property of TED Conferences LLC. This new TED-LIUM release was made through a collaboration between the Ubiqus company and the LIUM (University of Le Mans, France) Contents: - 2351 audio talks in NIST sphere format (SPH), including talks from TED-LIUM 2: be careful, same talks but not same audio files (only these audio file must be used with the TED-LIUM 3 STM files) - 452 hours of audio - 2351 aligned automatic transcripts in STM format - TEDLIUM 2 dev and test data: 19 TED talks in SPH format with corresponding manual transcriptions (cf. 'legacy' distribution below). - Dictionary with pronunciations (159848 entries), same file as the one included in TED-LIUM 2 - Selected monolingual data for language modeling from WMT12 publicly available corpora: these files come from the TED-LIUM 2 release, but have been modified to get a tokenization more relevant for English language Two corpus distributions: - the legacy one, on which the dev and test datasets are the same as in TED-LIUM 2 (and TED-LIUM 1). - the 'speaker adaptation' one, especially designed for experiments on speaker adaptation. """, citation="""\ @inproceedings{hernandez2018tedlium3, title={TED-LIUM 3: twice as much data and corpus repartition for experiments on speaker adaptation}, author={Hernandez, Fran{\\c{c}}ois and Nguyen, Vincent and Ghannay, Sahar and Tomashenko, Natalia and Est{\\`e}ve, Yannick}, booktitle={International Conference on Speech and Computer}, pages={198--208}, year={2018}, organization={Springer} } """, url="https://www.openslr.org/51/", download_url="http://www.openslr.org/resources/51/TEDLIUM_release-3.tgz", split_paths=[ (datasets.Split.VALIDATION, os.path.join("TEDLIUM_release-3", "legacy", "dev")), (datasets.Split.TEST, os.path.join("TEDLIUM_release-3", "legacy", "test")), # The legacy/train directory contains symlinks to "data", # which are skipped by extraction (see above). # Work around this by manually dereferencing the links here. (datasets.Split.TRAIN, os.path.join("TEDLIUM_release-3", "data")), ], ) return [release1, release2, release3] class TedLium(datasets.GeneratorBasedBuilder): """The TED-LIUM corpus is English-language TED talks, with transcriptions, sampled at 16kHz. It contains about 118 hours of speech.""" VERSION = datasets.Version("1.1.0") BUILDER_CONFIGS = _make_builder_configs() def _info(self): features = datasets.Features( { "audio": datasets.features.Audio(sampling_rate=16_000), "text": datasets.Value("string"), "speaker_id": datasets.Value("string"), "gender": datasets.features.ClassLabel(names=["unknown", "female", "male"]), "file": datasets.Value("string"), "id": datasets.Value("string"), } ) return datasets.DatasetInfo( description=self.config.description, features=features, supervised_keys=("audio", "text"), homepage=self.config.url, license=_LICENSE, citation=self.config.citation, task_templates=[AutomaticSpeechRecognition(audio_column="audio", transcription_column="text")], ) def _split_generators(self, dl_manager): data_dir = dl_manager.download_and_extract(self.config.download_url) splits = [] for split, path in self.config.split_paths: kwargs = {"filepath": os.path.join(data_dir, path)} splits.append(datasets.SplitGenerator(name=split, gen_kwargs=kwargs)) return splits def _generate_examples(self, filepath): """Generate examples from a TED-LIUM stm file.""" # The stm directory houses the speaker and transcription information in .stm format stm_dir = os.path.join(filepath, "stm") # The sph directory houses the audio files in .sph format sph_dir = os.path.join(filepath, "sph") stm_files = [os.path.join(stm_dir, f) for f in os.listdir(stm_dir) if f.endswith(".stm")] for file in stm_files: # the .sph speaker file almost always has the same file name as the .stm file speaker_file = Path(file).stem audio_file = os.path.join(sph_dir, speaker_file + ".sph") segment = _read_audio_segment(os.path.join(sph_dir, audio_file)) with open(file) as f: for line in f: line = line.strip() fn, channel, speaker, start, end, label, transcript = line.split(" ", 6) transcript = _maybe_trim_suffix(transcript) if speaker_file != fn: # handle the case where the stm file does not have the same file name as the transcript speaker_file = fn segment = _read_audio_segment(os.path.join(sph_dir, speaker_file + ".sph")) samples = _extract_audio_segment(segment, int(channel), float(start), float(end)) key = "-".join([speaker, start, end, label]) example = { "audio": {"path": file, "array": samples, "sampling_rate": 16000}, "text": transcript, "speaker_id": speaker, "gender": _parse_gender(label), "file": file, "id": key, } yield key, example def _read_audio_segment(sph_path): """Reads segment of audio samples from given sph file path""" with open(sph_path, "rb") as f: segment = AudioSegment.from_file(f, format="nistsphere") assert segment.channels == 1 return segment def _maybe_trim_suffix(transcript): # stm files for the TEDLIUM release 1 train split contain a key (enclosed in # parens) at the end. splits = transcript.rsplit(" ", 1) transcript = splits[0] if len(splits) > 1: suffix = splits[-1] if not suffix.startswith("("): transcript += " " + suffix return transcript def _extract_audio_segment(segment, channel, start_sec, end_sec): """Extracts segment of audio samples (as an ndarray) from the given segment.""" # The dataset only contains mono audio. assert channel == 1 start_ms = int(start_sec * 1000) end_ms = int(end_sec * 1000) segment = segment[start_ms:end_ms] samples = np.array(segment.get_array_of_samples()) return samples def _parse_gender(label_str): """Parse gender string from STM "