Czech Broadcast News Transcripts

Item Name: Czech Broadcast News Transcripts
Author(s): Vlasta Radova, Josef Psutka, Ludek Muller, William Byrne, J V. Psutka, Pavel Ircing, Jindrich Matousek
LDC Catalog No.: LDC2004T01
ISBN: 1-58563-281-3
ISLRN: 577-603-476-733-7
Release Date: April 21, 2004
Member Year(s): 2004
DCMI Type(s): Text
Data Source(s): broadcast news
Application(s): speech recognition
Language(s): Czech
Language ID(s): ces
License(s): LDC User Agreement for Non-Members
Online Documentation: LDC2004T01 Documents
Licensing Instructions: Subscription & Standard Members, and Non-Members
Citation: Radova, Vlasta, et al. Czech Broadcast News Transcripts LDC2004T01. Web Download. Philadelphia: Linguistic Data Consortium, 2004.
Related Works: View


Czech Broadcast News Transcripts was produced by the University of West Bohemia in Pilsen and contains the transcripts corresponding to 50 hours of Czech broadcast news audio.

The audio was recorded between February 1 and April 22, 2000, at the Department of Cybernetics, University of West Bohemia in Pilsen from three Czech radio stations:

  • Český rozhlas Radiožurnál
  • Český rozhlas Praha (now Dvojka)
  • Český rozhlas Vltava

And two TV channels:

  • Ceska Televize (CTV)
  • Prima TV (Prima)

The corresponding transcripts for these speech files are available in Czech Broadcast News Speech (LDC2004S01).

The corpus was created to support the development of large vocabulary speaker independent speech recognition systems for Czech.


The transcripts contain approximately 196 K-words (thousands of words) and 27K unique words. The news does not contain weather forecasts, sports news, or traffic announcements. The stations, channels, number of files, and number of hours are listed below:

  Source Files Hours
Radio Radiožurnál 138 30.8
Praha 90 7.8
Vltava 14 2
TV CTV 22 5.1
Prima 22 4.2
Totals 286 50

The transcripts were created by native Czech speakers working at the Department of Cybernetics, University of West Bohemia in Pilsen, under the direction of Vlasta Radova. The transcription was done using software provided by the LDC (Transcriber 1.4.1). Those parts of the audio recordings that do not contain speech or where the signal was disrupted, were not transcribed. As a consequence, the corpus contains about 23 hours of transcribed speech. The transcriptions are provided both in the ISO-8859-2 and Windows-1250 character set.

For an example transcript please click on this example.


The completion of this corpus was facilitated by funding provided by the Ministry of Education of the Czech Republic (Grants No. MSM235200004 and LN00A063) and by the National Science Foundation (NSF) project no. IIS-9820687 entitled "1999 Language Engineering Workshop for Students and Professionals: Integrating Research and Education (WS99)" under the agreement no. 8004-48231 between the Johns Hopkins University, Baltimore, Maryland, and the University of West Bohemia in Pilsen, Czech Republic.


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