Captioning of live TV programs through speech recognition and re-speaking

In this paper we introduce our complete solution for captioning of live TV programs used by the Czech Television, the public service broadcaster in the Czech Republic. Live captioning using speech recognition and re-speaking is on the increase and widely used for example in BBC; however, many specific issues have to be solved each time a new captioning system is being put in operation. Our concept of re-speaking assumes a complex integration of re-speaker's skills, not only verbatim repetition with fully automatic processing. This paper describes the recognition system design with advanced re-speaker interaction, distributed captioning system architecture and neglected re-speaker training. Some evaluation of our skilled re-speakers is presented too.