4TTSDeepfakeDataset

Description

Based on the Hi-Fi Multi-Speaker English TTS Dataset, this dataset includes 148.06 hours and 75,575 utterances of 24kHz Mono 16-bit audio. It uses the utterances of speakers 6097, 6670, 6671, and 9017 from the original corpus.

For each original bona fide utterance, there are 4 corresponding deepfake zero-shot 1:1 utterances generated by the following models (15,115 utterances each):

• F5-TTSv1
• MaskGCT
• CosyVoice2
• Fish-S1mini

Dataset Structure

The dataset includes 5 folders with utterances and a parallel_manifest.json file that provides the 1:4 (bona fide to TTS deepfakes) mapping.

Recordings per TTS System/Speaker

Speaker ID	Parallel Utterances	Bona Fide (hrs)	MaskGCT (hrs)	F5-TTSv1 (hrs)	Fish-S1mini (hrs)	CosyVoice2 (hrs)
6097	3,500	6.98	7.00	6.85	6.83	7.11
6670	3,556	7.18	7.19	7.07	6.97	7.56
6671	4,538	9.02	8.93	8.74	8.57	9.11
9017	3,521	6.63	6.66	6.55	6.38	6.73
Total Corpus	15,115	29.82	29.77	29.20	28.76	30.51

Acknowledgements and Attribution

Original Audio Data

This dataset is a derivative work based on the Hi-Fi Multi-Speaker English TTS Dataset created by E. Bakhturina, V. Lavrukhin, B. Ginsburg, and Y. Zhang. The original dataset is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Modifications to the Original Material: 1. The original bona fide audio files from speakers 6097, 6670, 6671, and 9017 were modified (sliced and merged) to create the parallel baseline utterances. 2. These preprocessed bona fide files were then used as the source material to generate 1:1 synthetic speech (deepfakes).

Synthetic Data Generation (Deepfakes)

The synthetic deepfake utterances in this dataset were generated using the following open-source Text-to-Speech models. The generated audio inherits the licensing terms of their respective source models:

• F5-TTSv1 by SWivid (Licensed under CC BY-NC 4.0)
• MaskGCT by Amphion (Licensed under CC BY-NC 4.0)
• Fish-S1mini by Fish Audio (Licensed under CC BY-NC-SA 4.0)
• CosyVoice2 by FunAudioLLM (Licensed under Apache 2.0)

Usage Restrictions

In accordance with the licenses of the underlying datasets and TTS models (specifically the CC-BY-NC and CC-BY-NC-SA clauses), the valid usage of this dataset only covers educational and personal purposes. Misuse of the dataset is your own responsibility.