meldynamics/liepa2

Dataset Card for LIEPA-2

Dataset Summary

The LIEPA-2 dataset is a large-scale annotated speech corpus for the Lithuanian language, developed under the project "Development of Services Controlled by Lithuanian Speech" (LIEPA-2). It is a phonetically representative, structured collection of data (audio recordings and annotations) designed for scientific research in speech technologies and the development of electronic services.

• Total Duration: 1000 hours
• Access: Due to the large size of the dataset, it is not available for direct download. Interested parties are requested to contact the creators at [email protected].

The dataset was created by Vilnius University (Institute of Data Science and Digital Technologies, Faculty of Philology) and partners.

Dataset Statistics

• Total Duration: 1000 hours
• Total Speakers: 2,621
• Speech Types:
  • Read speech: 91%
  • Spontaneous speech: 9%

Recording Environments

• Studio recordings: 62%
• Dictaphone recordings: 28%
• Audio books: 3%
• TV broadcasts: 3%
• Radio broadcasts: 2%
• Telephone recordings: 2%

Speaker Demographics

• Gender Distribution:
  • Female: 56%
  • Male: 44%
• Age Distribution:
  • Under 12 years: 8%
  • 13–17 years: 3%
  • 18–25 years: 18%
  • 26–60 years: 61%
  • Over 60 years: 10%

Dataset Structure

Data Format

• Audio: .wav format, 16 kHz sampling rate, 16-bit quantization, 1 channel (mono).
• Annotations: .eaf format.

Data Instances

Each data instance consists of a .wav audio file and its corresponding .eaf text annotation.

Data Content

The recordings cover a wide range of topics and styles to ensure acoustic diversity (sequences of words/phrases, read and spontaneous speech). The content includes:

• Excerpts from books by Lithuanian and foreign authors.
• Current news broadcasts.
• Texts for children, fairy tales, and myths.
• Specific Domains: Art (graphics, music, theater, movies), Politics, Education/School, Psychology, Memoirs, Geography, Recipes, History, Nature, Automotive, IT, Sports, Origins of objects, etc.

Additional Information

Licensing Information

The LIEPA-2 dataset is distributed under the CC BY (Creative Commons Attribution) license.

Citation Information

When using this dataset for the development of other products, please mention in your product description that the dataset was created at Vilnius University under the project "Lietuvių šneka valdomų paslaugų plėtra – LIEPA 2".

Contact

For access to the full dataset, please contact: [email protected]

• Project Website: liepa2.rastija.lt
• Creators: Vilnius University (Institute of Mathematics and Informatics, Faculty of Philology).

References

• Garsynas LIEPA-2