---
license: 'apache-2.0'
configs:
- config_name: 'default'
  default: true
  data_files:
  - split: 'medium'
    path:
    - 'default/medium/medium-00000-of-00287.parquet'
    - 'default/medium/medium-00001-of-00287.parquet'
    - 'default/medium/medium-00002-of-00287.parquet'
    - 'default/medium/medium-00003-of-00287.parquet'
    - 'default/medium/medium-00004-of-00287.parquet'
    - 'default/medium/medium-00005-of-00287.parquet'
    - 'default/medium/medium-00006-of-00287.parquet'
    - 'default/medium/medium-00007-of-00287.parquet'
    - 'default/medium/medium-00008-of-00287.parquet'
    - 'default/medium/medium-00009-of-00287.parquet'
    - 'default/medium/medium-00010-of-00287.parquet'
    - 'default/medium/medium-00011-of-00287.parquet'
    - 'default/medium/medium-00012-of-00287.parquet'
    - 'default/medium/medium-00013-of-00287.parquet'
    - 'default/medium/medium-00014-of-00287.parquet'
    - 'default/medium/medium-00015-of-00287.parquet'
    - 'default/medium/medium-00016-of-00287.parquet'
    - 'default/medium/medium-00017-of-00287.parquet'
    - 'default/medium/medium-00018-of-00287.parquet'
    - 'default/medium/medium-00019-of-00287.parquet'
    - 'default/medium/medium-00020-of-00287.parquet'
    - 'default/medium/medium-00021-of-00287.parquet'
    - 'default/medium/medium-00022-of-00287.parquet'
    - 'default/medium/medium-00023-of-00287.parquet'
    - 'default/medium/medium-00024-of-00287.parquet'
    - 'default/medium/medium-00025-of-00287.parquet'
    - 'default/medium/medium-00026-of-00287.parquet'
    - 'default/medium/medium-00027-of-00287.parquet'
    - 'default/medium/medium-00028-of-00287.parquet'
    - 'default/medium/medium-00029-of-00287.parquet'
    - 'default/medium/medium-00030-of-00287.parquet'
    - 'default/medium/medium-00031-of-00287.parquet'
    - 'default/medium/medium-00032-of-00287.parquet'
    - 'default/medium/medium-00033-of-00287.parquet'
    - 'default/medium/medium-00034-of-00287.parquet'
    - 'default/medium/medium-00035-of-00287.parquet'
    - 'default/medium/medium-00036-of-00287.parquet'
    - 'default/medium/medium-00037-of-00287.parquet'
    - 'default/medium/medium-00038-of-00287.parquet'
    - 'default/medium/medium-00039-of-00287.parquet'
    - 'default/medium/medium-00040-of-00287.parquet'
    - 'default/medium/medium-00041-of-00287.parquet'
    - 'default/medium/medium-00042-of-00287.parquet'
    - 'default/medium/medium-00043-of-00287.parquet'
    - 'default/medium/medium-00044-of-00287.parquet'
    - 'default/medium/medium-00045-of-00287.parquet'
    - 'default/medium/medium-00046-of-00287.parquet'
    - 'default/medium/medium-00047-of-00287.parquet'
    - 'default/medium/medium-00048-of-00287.parquet'
    - 'default/medium/medium-00049-of-00287.parquet'
    - 'default/medium/medium-00050-of-00287.parquet'
    - 'default/medium/medium-00051-of-00287.parquet'
    - 'default/medium/medium-00052-of-00287.parquet'
    - 'default/medium/medium-00053-of-00287.parquet'
    - 'default/medium/medium-00054-of-00287.parquet'
    - 'default/medium/medium-00055-of-00287.parquet'
    - 'default/medium/medium-00056-of-00287.parquet'
    - 'default/medium/medium-00057-of-00287.parquet'
    - 'default/medium/medium-00058-of-00287.parquet'
    - 'default/medium/medium-00059-of-00287.parquet'
    - 'default/medium/medium-00060-of-00287.parquet'
    - 'default/medium/medium-00061-of-00287.parquet'
    - 'default/medium/medium-00062-of-00287.parquet'
    - 'default/medium/medium-00063-of-00287.parquet'
    - 'default/medium/medium-00064-of-00287.parquet'
    - 'default/medium/medium-00065-of-00287.parquet'
    - 'default/medium/medium-00066-of-00287.parquet'
    - 'default/medium/medium-00067-of-00287.parquet'
    - 'default/medium/medium-00068-of-00287.parquet'
    - 'default/medium/medium-00069-of-00287.parquet'
    - 'default/medium/medium-00070-of-00287.parquet'
    - 'default/medium/medium-00071-of-00287.parquet'
    - 'default/medium/medium-00072-of-00287.parquet'
    - 'default/medium/medium-00073-of-00287.parquet'
    - 'default/medium/medium-00074-of-00287.parquet'
    - 'default/medium/medium-00075-of-00287.parquet'
    - 'default/medium/medium-00076-of-00287.parquet'
    - 'default/medium/medium-00077-of-00287.parquet'
    - 'default/medium/medium-00078-of-00287.parquet'
    - 'default/medium/medium-00079-of-00287.parquet'
    - 'default/medium/medium-00080-of-00287.parquet'
    - 'default/medium/medium-00081-of-00287.parquet'
    - 'default/medium/medium-00082-of-00287.parquet'
    - 'default/medium/medium-00083-of-00287.parquet'
    - 'default/medium/medium-00084-of-00287.parquet'
    - 'default/medium/medium-00085-of-00287.parquet'
    - 'default/medium/medium-00086-of-00287.parquet'
    - 'default/medium/medium-00087-of-00287.parquet'
    - 'default/medium/medium-00088-of-00287.parquet'
    - 'default/medium/medium-00089-of-00287.parquet'
    - 'default/medium/medium-00090-of-00287.parquet'
    - 'default/medium/medium-00091-of-00287.parquet'
    - 'default/medium/medium-00092-of-00287.parquet'
    - 'default/medium/medium-00093-of-00287.parquet'
    - 'default/medium/medium-00094-of-00287.parquet'
    - 'default/medium/medium-00095-of-00287.parquet'
    - 'default/medium/medium-00096-of-00287.parquet'
    - 'default/medium/medium-00097-of-00287.parquet'
    - 'default/medium/medium-00098-of-00287.parquet'
    - 'default/medium/medium-00099-of-00287.parquet'
    - 'default/medium/medium-00100-of-00287.parquet'
    - 'default/medium/medium-00101-of-00287.parquet'
    - 'default/medium/medium-00102-of-00287.parquet'
    - 'default/medium/medium-00103-of-00287.parquet'
    - 'default/medium/medium-00104-of-00287.parquet'
    - 'default/medium/medium-00105-of-00287.parquet'
    - 'default/medium/medium-00106-of-00287.parquet'
    - 'default/medium/medium-00107-of-00287.parquet'
    - 'default/medium/medium-00108-of-00287.parquet'
    - 'default/medium/medium-00109-of-00287.parquet'
    - 'default/medium/medium-00110-of-00287.parquet'
    - 'default/medium/medium-00111-of-00287.parquet'
    - 'default/medium/medium-00112-of-00287.parquet'
    - 'default/medium/medium-00113-of-00287.parquet'
    - 'default/medium/medium-00114-of-00287.parquet'
    - 'default/medium/medium-00115-of-00287.parquet'
    - 'default/medium/medium-00116-of-00287.parquet'
    - 'default/medium/medium-00117-of-00287.parquet'
    - 'default/medium/medium-00118-of-00287.parquet'
    - 'default/medium/medium-00119-of-00287.parquet'
    - 'default/medium/medium-00120-of-00287.parquet'
    - 'default/medium/medium-00121-of-00287.parquet'
    - 'default/medium/medium-00122-of-00287.parquet'
    - 'default/medium/medium-00123-of-00287.parquet'
    - 'default/medium/medium-00124-of-00287.parquet'
    - 'default/medium/medium-00125-of-00287.parquet'
    - 'default/medium/medium-00126-of-00287.parquet'
    - 'default/medium/medium-00127-of-00287.parquet'
    - 'default/medium/medium-00128-of-00287.parquet'
    - 'default/medium/medium-00129-of-00287.parquet'
    - 'default/medium/medium-00130-of-00287.parquet'
    - 'default/medium/medium-00131-of-00287.parquet'
    - 'default/medium/medium-00132-of-00287.parquet'
    - 'default/medium/medium-00133-of-00287.parquet'
    - 'default/medium/medium-00134-of-00287.parquet'
    - 'default/medium/medium-00135-of-00287.parquet'
    - 'default/medium/medium-00136-of-00287.parquet'
    - 'default/medium/medium-00137-of-00287.parquet'
    - 'default/medium/medium-00138-of-00287.parquet'
    - 'default/medium/medium-00139-of-00287.parquet'
    - 'default/medium/medium-00140-of-00287.parquet'
    - 'default/medium/medium-00141-of-00287.parquet'
    - 'default/medium/medium-00142-of-00287.parquet'
    - 'default/medium/medium-00143-of-00287.parquet'
    - 'default/medium/medium-00144-of-00287.parquet'
    - 'default/medium/medium-00145-of-00287.parquet'
    - 'default/medium/medium-00146-of-00287.parquet'
    - 'default/medium/medium-00147-of-00287.parquet'
    - 'default/medium/medium-00148-of-00287.parquet'
    - 'default/medium/medium-00149-of-00287.parquet'
    - 'default/medium/medium-00150-of-00287.parquet'
    - 'default/medium/medium-00151-of-00287.parquet'
    - 'default/medium/medium-00152-of-00287.parquet'
    - 'default/medium/medium-00153-of-00287.parquet'
    - 'default/medium/medium-00154-of-00287.parquet'
    - 'default/medium/medium-00155-of-00287.parquet'
    - 'default/medium/medium-00156-of-00287.parquet'
    - 'default/medium/medium-00157-of-00287.parquet'
    - 'default/medium/medium-00158-of-00287.parquet'
    - 'default/medium/medium-00159-of-00287.parquet'
    - 'default/medium/medium-00160-of-00287.parquet'
    - 'default/medium/medium-00161-of-00287.parquet'
    - 'default/medium/medium-00162-of-00287.parquet'
    - 'default/medium/medium-00163-of-00287.parquet'
    - 'default/medium/medium-00164-of-00287.parquet'
    - 'default/medium/medium-00165-of-00287.parquet'
    - 'default/medium/medium-00166-of-00287.parquet'
    - 'default/medium/medium-00167-of-00287.parquet'
    - 'default/medium/medium-00168-of-00287.parquet'
    - 'default/medium/medium-00169-of-00287.parquet'
    - 'default/medium/medium-00170-of-00287.parquet'
    - 'default/medium/medium-00171-of-00287.parquet'
    - 'default/medium/medium-00172-of-00287.parquet'
    - 'default/medium/medium-00173-of-00287.parquet'
    - 'default/medium/medium-00174-of-00287.parquet'
    - 'default/medium/medium-00175-of-00287.parquet'
    - 'default/medium/medium-00176-of-00287.parquet'
    - 'default/medium/medium-00177-of-00287.parquet'
    - 'default/medium/medium-00178-of-00287.parquet'
    - 'default/medium/medium-00179-of-00287.parquet'
    - 'default/medium/medium-00180-of-00287.parquet'
    - 'default/medium/medium-00181-of-00287.parquet'
    - 'default/medium/medium-00182-of-00287.parquet'
    - 'default/medium/medium-00183-of-00287.parquet'
    - 'default/medium/medium-00184-of-00287.parquet'
    - 'default/medium/medium-00185-of-00287.parquet'
    - 'default/medium/medium-00186-of-00287.parquet'
    - 'default/medium/medium-00187-of-00287.parquet'
    - 'default/medium/medium-00188-of-00287.parquet'
    - 'default/medium/medium-00189-of-00287.parquet'
    - 'default/medium/medium-00190-of-00287.parquet'
    - 'default/medium/medium-00191-of-00287.parquet'
    - 'default/medium/medium-00192-of-00287.parquet'
    - 'default/medium/medium-00193-of-00287.parquet'
    - 'default/medium/medium-00194-of-00287.parquet'
    - 'default/medium/medium-00195-of-00287.parquet'
    - 'default/medium/medium-00196-of-00287.parquet'
    - 'default/medium/medium-00197-of-00287.parquet'
    - 'default/medium/medium-00198-of-00287.parquet'
    - 'default/medium/medium-00199-of-00287.parquet'
    - 'default/medium/medium-00200-of-00287.parquet'
    - 'default/medium/medium-00201-of-00287.parquet'
    - 'default/medium/medium-00202-of-00287.parquet'
    - 'default/medium/medium-00203-of-00287.parquet'
    - 'default/medium/medium-00204-of-00287.parquet'
    - 'default/medium/medium-00205-of-00287.parquet'
    - 'default/medium/medium-00206-of-00287.parquet'
    - 'default/medium/medium-00207-of-00287.parquet'
    - 'default/medium/medium-00208-of-00287.parquet'
    - 'default/medium/medium-00209-of-00287.parquet'
    - 'default/medium/medium-00210-of-00287.parquet'
    - 'default/medium/medium-00211-of-00287.parquet'
    - 'default/medium/medium-00212-of-00287.parquet'
    - 'default/medium/medium-00213-of-00287.parquet'
    - 'default/medium/medium-00214-of-00287.parquet'
    - 'default/medium/medium-00215-of-00287.parquet'
    - 'default/medium/medium-00216-of-00287.parquet'
    - 'default/medium/medium-00217-of-00287.parquet'
    - 'default/medium/medium-00218-of-00287.parquet'
    - 'default/medium/medium-00219-of-00287.parquet'
    - 'default/medium/medium-00220-of-00287.parquet'
    - 'default/medium/medium-00221-of-00287.parquet'
    - 'default/medium/medium-00222-of-00287.parquet'
    - 'default/medium/medium-00223-of-00287.parquet'
    - 'default/medium/medium-00224-of-00287.parquet'
    - 'default/medium/medium-00225-of-00287.parquet'
    - 'default/medium/medium-00226-of-00287.parquet'
    - 'default/medium/medium-00227-of-00287.parquet'
    - 'default/medium/medium-00228-of-00287.parquet'
    - 'default/medium/medium-00229-of-00287.parquet'
    - 'default/medium/medium-00230-of-00287.parquet'
    - 'default/medium/medium-00231-of-00287.parquet'
    - 'default/medium/medium-00232-of-00287.parquet'
    - 'default/medium/medium-00233-of-00287.parquet'
    - 'default/medium/medium-00234-of-00287.parquet'
    - 'default/medium/medium-00235-of-00287.parquet'
    - 'default/medium/medium-00236-of-00287.parquet'
    - 'default/medium/medium-00237-of-00287.parquet'
    - 'default/medium/medium-00238-of-00287.parquet'
    - 'default/medium/medium-00239-of-00287.parquet'
    - 'default/medium/medium-00240-of-00287.parquet'
    - 'default/medium/medium-00241-of-00287.parquet'
    - 'default/medium/medium-00242-of-00287.parquet'
    - 'default/medium/medium-00243-of-00287.parquet'
    - 'default/medium/medium-00244-of-00287.parquet'
    - 'default/medium/medium-00245-of-00287.parquet'
    - 'default/medium/medium-00246-of-00287.parquet'
    - 'default/medium/medium-00247-of-00287.parquet'
    - 'default/medium/medium-00248-of-00287.parquet'
    - 'default/medium/medium-00249-of-00287.parquet'
    - 'default/medium/medium-00250-of-00287.parquet'
    - 'default/medium/medium-00251-of-00287.parquet'
    - 'default/medium/medium-00252-of-00287.parquet'
    - 'default/medium/medium-00253-of-00287.parquet'
    - 'default/medium/medium-00254-of-00287.parquet'
    - 'default/medium/medium-00255-of-00287.parquet'
    - 'default/medium/medium-00256-of-00287.parquet'
    - 'default/medium/medium-00257-of-00287.parquet'
    - 'default/medium/medium-00258-of-00287.parquet'
    - 'default/medium/medium-00259-of-00287.parquet'
    - 'default/medium/medium-00260-of-00287.parquet'
    - 'default/medium/medium-00261-of-00287.parquet'
    - 'default/medium/medium-00262-of-00287.parquet'
    - 'default/medium/medium-00263-of-00287.parquet'
    - 'default/medium/medium-00264-of-00287.parquet'
    - 'default/medium/medium-00265-of-00287.parquet'
    - 'default/medium/medium-00266-of-00287.parquet'
    - 'default/medium/medium-00267-of-00287.parquet'
    - 'default/medium/medium-00268-of-00287.parquet'
    - 'default/medium/medium-00269-of-00287.parquet'
    - 'default/medium/medium-00270-of-00287.parquet'
    - 'default/medium/medium-00271-of-00287.parquet'
    - 'default/medium/medium-00272-of-00287.parquet'
    - 'default/medium/medium-00273-of-00287.parquet'
    - 'default/medium/medium-00274-of-00287.parquet'
    - 'default/medium/medium-00275-of-00287.parquet'
    - 'default/medium/medium-00276-of-00287.parquet'
    - 'default/medium/medium-00277-of-00287.parquet'
    - 'default/medium/medium-00278-of-00287.parquet'
    - 'default/medium/medium-00279-of-00287.parquet'
    - 'default/medium/medium-00280-of-00287.parquet'
    - 'default/medium/medium-00281-of-00287.parquet'
    - 'default/medium/medium-00282-of-00287.parquet'
    - 'default/medium/medium-00283-of-00287.parquet'
    - 'default/medium/medium-00284-of-00287.parquet'
    - 'default/medium/medium-00285-of-00287.parquet'
    - 'default/medium/medium-00286-of-00287.parquet'
  - split: 'small'
    path:
    - 'default/small/small-00000-of-00032.parquet'
    - 'default/small/small-00001-of-00032.parquet'
    - 'default/small/small-00002-of-00032.parquet'
    - 'default/small/small-00003-of-00032.parquet'
    - 'default/small/small-00004-of-00032.parquet'
    - 'default/small/small-00005-of-00032.parquet'
    - 'default/small/small-00006-of-00032.parquet'
    - 'default/small/small-00007-of-00032.parquet'
    - 'default/small/small-00008-of-00032.parquet'
    - 'default/small/small-00009-of-00032.parquet'
    - 'default/small/small-00010-of-00032.parquet'
    - 'default/small/small-00011-of-00032.parquet'
    - 'default/small/small-00012-of-00032.parquet'
    - 'default/small/small-00013-of-00032.parquet'
    - 'default/small/small-00014-of-00032.parquet'
    - 'default/small/small-00015-of-00032.parquet'
    - 'default/small/small-00016-of-00032.parquet'
    - 'default/small/small-00017-of-00032.parquet'
    - 'default/small/small-00018-of-00032.parquet'
    - 'default/small/small-00019-of-00032.parquet'
    - 'default/small/small-00020-of-00032.parquet'
    - 'default/small/small-00021-of-00032.parquet'
    - 'default/small/small-00022-of-00032.parquet'
    - 'default/small/small-00023-of-00032.parquet'
    - 'default/small/small-00024-of-00032.parquet'
    - 'default/small/small-00025-of-00032.parquet'
    - 'default/small/small-00026-of-00032.parquet'
    - 'default/small/small-00027-of-00032.parquet'
    - 'default/small/small-00028-of-00032.parquet'
    - 'default/small/small-00029-of-00032.parquet'
    - 'default/small/small-00030-of-00032.parquet'
    - 'default/small/small-00031-of-00032.parquet'
---

# Libriheavy

Libriheavy: a 50,000 hours ASR corpus with punctuation casing and context. Libriheavy is a labeled version of Librilight.
 
This uploaded version replaces the default Libri-Light audio files with the highest quality available versions from librivox 
and cuts them without re-encoding them. In most cases, this consists an upgrade of the source audio from a 
64kbps mp3 to a 128kbps mp3. 

Audio files are kept as mp3 and not re-encoded to flac as in the original Librilight source archives to save disk space.

- Homepage: https://github.com/k2-fsa/libriheavy
- License: apache-2.0

## Citation

```bibtex
@misc{kang2023libriheavy,
      title={Libriheavy: a 50,000 hours ASR corpus with punctuation casing and context}, 
      author={Wei Kang and Xiaoyu Yang and Zengwei Yao and Fangjun Kuang and Yifan Yang and Liyong Guo and Long Lin and Daniel Povey},
      year={2023},
      eprint={2309.08105},
      archivePrefix={arXiv},
      primaryClass={eess.AS}
}
```