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metadata
language:
  - nl
  - fr
  - de
  - it
  - pl
  - pt
  - es
license: cc-by-4.0
size_categories:
  - 1M<n<10M
task_categories:
  - text-to-speech
  - text-to-audio
pretty_name: CML-TTS
dataset_info:
  - config_name: dutch
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 186374683541.98
        num_examples: 309785
      - name: dev
        num_bytes: 2912063172.928
        num_examples: 4834
      - name: test
        num_bytes: 2757891736.78
        num_examples: 4570
    download_size: 132987704971
    dataset_size: 192044638451.68802
  - config_name: french
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 64984002840.768
        num_examples: 107598
      - name: dev
        num_bytes: 2257393207.796
        num_examples: 3739
      - name: test
        num_bytes: 2281630546.306
        num_examples: 3763
    download_size: 48345998335
    dataset_size: 69523026594.87
  - config_name: german
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 369052038020.872
        num_examples: 608296
      - name: dev
        num_bytes: 3197115278.604
        num_examples: 5314
      - name: test
        num_bytes: 3288183839.092
        num_examples: 5466
    download_size: 280438261836
    dataset_size: 375537337138.568
  - config_name: italian
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 30242801015.92
        num_examples: 50345
      - name: dev
        num_bytes: 938644924.81
        num_examples: 1765
      - name: test
        num_bytes: 979116355.51
        num_examples: 1835
    download_size: 21996805791
    dataset_size: 32160562296.239998
  - config_name: polish
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 11127461686.356
        num_examples: 18719
      - name: dev
        num_bytes: 356048249
        num_examples: 853
      - name: test
        num_bytes: 367796887
        num_examples: 814
    download_size: 8114633186
    dataset_size: 11851306822.356
  - config_name: portuguese
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 20722423371
        num_examples: 34265
      - name: dev
        num_bytes: 622824524.224
        num_examples: 1134
      - name: test
        num_bytes: 673141068.9
        num_examples: 1297
    download_size: 14421097659
    dataset_size: 22018388964.124
  - config_name: spanish
    features:
      - name: audio
        dtype: audio
      - name: wav_filesize
        dtype: int64
      - name: text
        dtype: string
      - name: transcript_wav2vec
        dtype: string
      - name: levenshtein
        dtype: float64
      - name: duration
        dtype: float64
      - name: num_words
        dtype: int64
      - name: speaker_id
        dtype: int64
    splits:
      - name: train
        num_bytes: 101377452063.176
        num_examples: 168524
      - name: dev
        num_bytes: 1882729515.184
        num_examples: 3148
      - name: test
        num_bytes: 1851592818
        num_examples: 3080
    download_size: 73687756096
    dataset_size: 105111774396.36
configs:
  - config_name: dutch
    data_files:
      - split: train
        path: dutch/train-*
      - split: dev
        path: dutch/dev-*
      - split: test
        path: dutch/test-*
  - config_name: french
    data_files:
      - split: train
        path: french/train-*
      - split: dev
        path: french/dev-*
      - split: test
        path: french/test-*
  - config_name: german
    data_files:
      - split: train
        path: german/train-*
      - split: dev
        path: german/dev-*
      - split: test
        path: german/test-*
  - config_name: italian
    data_files:
      - split: train
        path: italian/train-*
      - split: dev
        path: italian/dev-*
      - split: test
        path: italian/test-*
  - config_name: polish
    data_files:
      - split: train
        path: polish/train-*
      - split: dev
        path: polish/dev-*
      - split: test
        path: polish/test-*
  - config_name: portuguese
    data_files:
      - split: train
        path: portuguese/train-*
      - split: dev
        path: portuguese/dev-*
      - split: test
        path: portuguese/test-*
  - config_name: spanish
    data_files:
      - split: train
        path: spanish/train-*
      - split: dev
        path: spanish/dev-*
      - split: test
        path: spanish/test-*

Dataset Card for CML-TTS

Table of Contents

Dataset Description

Dataset Summary

CML-TTS is a recursive acronym for CML-Multi-Lingual-TTS, a Text-to-Speech (TTS) dataset developed at the Center of Excellence in Artificial Intelligence (CEIA) of the Federal University of Goias (UFG). CML-TTS is a dataset comprising audiobooks sourced from the public domain books of Project Gutenberg, read by volunteers from the LibriVox project. The dataset includes recordings in Dutch, German, French, Italian, Polish, Portuguese, and Spanish, all at a sampling rate of 24kHz.

The data archives were restructured from the original ones from OpenSLR to make it easier to stream.

Supported Tasks

  • text-to-speech, text-to-audio: The dataset can also be used to train a model for Text-To-Speech (TTS).

Languages

The dataset includes recordings in Dutch, German, French, Italian, Polish, Portuguese, and Spanish, all at a sampling rate of 24kHz.

How to use

The datasets library allows you to load and pre-process your dataset in pure Python, at scale. The dataset can be downloaded and prepared in one call to your local drive by using the load_dataset function.

For example, to download the German config, simply specify the corresponding language config name (i.e., "german" for German):

from datasets import load_dataset

mls = load_dataset("ylacombe/cml-tts", "german", split="train")

Using the datasets library, you can also stream the dataset on-the-fly by adding a streaming=True argument to the load_dataset function call. Loading a dataset in streaming mode loads individual samples of the dataset at a time, rather than downloading the entire dataset to disk.

from datasets import load_dataset

mls = load_dataset("ylacombe/cml-tts", "german", split="train", streaming=True)

print(next(iter(mls)))

Bonus

You can create a PyTorch dataloader directly with your own datasets (local/streamed).

Local:

from datasets import load_dataset
from torch.utils.data.sampler import BatchSampler, RandomSampler

mls = load_dataset("ylacombe/cml-tts", "german", split="train")
batch_sampler = BatchSampler(RandomSampler(mls), batch_size=32, drop_last=False)
dataloader = DataLoader(mls, batch_sampler=batch_sampler)

Streaming:

from datasets import load_dataset
from torch.utils.data import DataLoader

mls = load_dataset("ylacombe/cml-tts", "german", split="train", streaming=True)
dataloader = DataLoader(mls, batch_size=32)

To find out more about loading and preparing audio datasets, head over to hf.co/blog/audio-datasets.

Dataset Structure

Data Instances

A typical data point comprises the path to the audio file, usually called file and its transcription, called text. Some additional information about the speaker and the passage which contains the transcription is provided.

{'audio': {'path': '6892_8912_000729.wav', 'array': array([-1.52587891e-...7344e-05]), 'sampling_rate': 24000}, 'wav_filesize': 601964, 'text': 'Proszę pana, tu pano... zdziwiony', 'transcript_wav2vec': 'proszę pana tu panow... zdziwiony', 'levenshtein': 0.96045197740113, 'duration': 13.648979591836737, 'num_words': 29, 'speaker_id': 6892}

Data Fields

  • audio: A dictionary containing the audio filename, the decoded audio array, and the sampling rate. Note that when accessing the audio column: dataset[0]["audio"] the audio file is automatically decoded and resampled to dataset.features["audio"].sampling_rate. Decoding and resampling of a large number of audio files might take a significant amount of time. Thus it is important to first query the sample index before the "audio" column, i.e. dataset[0]["audio"] should always be preferred over dataset["audio"][0].

  • text: the transcription of the audio file.

  • speaker_id: unique id of the speaker. The same speaker id can be found for multiple data samples.

  • transcript_wav2vec: the transcription of the audio file using the wav2vec model. Has been used to curate the dataset.

  • wav_filesize: The size of the audio waveform file. Has been used to curate the dataset.

  • levenshtein: The Levenshtein distance between the wav2vec transcription and the original transcription. Has been used to curate the dataset.

  • duration: The duration of the audio in seconds.

  • num_words: The number of words of the transcription.

Data Splits

# Samples Train Dev Test
german 608296 5314 5466
dutch 309785 4834 4570
french 107598 3739 3763
spanish 168524 3148 3080
italian 50345 1765 1835
portuguese 34265 1134 1297
polish 18719 853 814

Data Statistics

Language Duration (Train) Duration (Test) Duration (Dev) Speakers (Train) Speakers (Test) Speakers (Dev)
M F M F M F
Dutch 482.82 162.17 2.46 1.29 2.24 1.67
French 260.08 24.04 2.48 3.55 3.31 2.72
German 1128.96 436.64 3.75 5.27 4.31 5.03
Italian 73.78 57.51 1.47 0.85 0.40 1.52
Polish 30.61 8.32 0.70 0.90 0.56 0.80
Portuguese 23.14 44.81 0.28 0.24 0.68 0.20
Spanish 279.15 164.08 2.77 2.06 3.40 2.34
Total 3,176.13 28.11 29.19

Dataset Creation

Curation Rationale

[Needs More Information]

Source Data

Initial Data Collection and Normalization

[Needs More Information]

Who are the source language producers?

[Needs More Information]

Annotations

Annotation process

[Needs More Information]

Who are the annotators?

[Needs More Information]

Personal and Sensitive Information

The dataset consists of people who have donated their voice online. You agree to not attempt to determine the identity of speakers in this dataset.

Considerations for Using the Data

Social Impact of Dataset

[More Information Needed]

Discussion of Biases

[More Information Needed]

Other Known Limitations

[Needs More Information]

Additional Information

Dataset Curators

[Needs More Information]

Licensing Information

Public Domain, Creative Commons Attribution 4.0 International Public License (CC-BY-4.0)

Citation Information

@misc{oliveira2023cmltts,
      title={CML-TTS A Multilingual Dataset for Speech Synthesis in Low-Resource Languages}, 
      author={Frederico S. Oliveira and Edresson Casanova and Arnaldo Cândido Júnior and Anderson S. Soares and Arlindo R. Galvão Filho},
      year={2023},
      eprint={2306.10097},
      archivePrefix={arXiv},
      primaryClass={eess.AS}
}

Contributions

Thanks to @ylacombe for adding this dataset.