Datasetpublic

changelinglab/thchs30-segment

THCHS-30 Segment Mandarin Chinese read-speech corpus with phone-level time alignments. Suitable for training and evaluating phone recognition and phonetic segmentation models. Sources Audio: THCHS-30 (OpenSLR 18) by Dong Wang, Xuewei Zhang, Zhiyong Zhang (Tsinghua University, 2015). Phone alignments: anyspeech/THCHS-30-alignments. Splits Split Utterances train 10,000 val 893 test 2,495 Splits follow the original OpenSLR 18… See the full description on the dataset page: https://huggingface.co/datasets/changelinglab/thchs30-segment.

sourceHugging Faceapache-2.0updated 6mo agoView on Hugging Face

0likes150downloads

Dataset Card

THCHS-30 Segment

Mandarin Chinese read-speech corpus with phone-level time alignments. Suitable for training and evaluating phone recognition and phonetic segmentation models.

Sources

—Audio: THCHS-30 (OpenSLR 18) by Dong Wang, Xuewei Zhang, Zhiyong Zhang (Tsinghua University, 2015).
—Phone alignments: `anyspeech/THCHS-30-alignments`.

Splits

Split	Utterances
train	10,000
val	893
test	2,495

Splits follow the original OpenSLR 18 directory partition (data_thchs30/{train,dev,test}); dev is renamed to val.

Schema

Column	Type	Description
`utt_id`	string	Utterance id, e.g. `A11_0`
`audio`	Audio(16 kHz)	Embedded waveform bytes (decoded on access)
`text`	string	Hanzi sentence transcript
`phones`	sequence[string]	IPA phone tokens with tone diacritics
`phone_starts`	sequence[float64]	Phone start times in seconds
`phone_ends`	sequence[float64]	Phone end times in seconds
`language`	string	`cmn` (ISO 639-3)
`speaker_id`	string	Speaker code (utt_id prefix, e.g. `A11`)
`duration`	float64	Utterance duration in seconds
`split`	string	`train` / `val` / `test`

Phone inventory

Phones are IPA with Mandarin tone diacritics, e.g. lː, y˥˩, ʂ˘, ɻ̩˥˩, a˧˥˘. Silence and pauses are marked with [SIL] intervals, which are kept in the alignment so boundary models can learn from them.

License

Released under the Apache 2.0 license, matching the original THCHS-30 release.

Citation

bibtex

@misc{THCHS30_2015,
  title={THCHS-30 : A Free Chinese Speech Corpus},
  author={Dong Wang, Xuewei Zhang, Zhiyong Zhang},
  year={2015},
  url={http://arxiv.org/abs/1512.01882}
}