Central and Eastern European Survey
Department of Electronics and Signal Processing , SpeechLab
Technical University of Liberec
Type of Organisation: public
Number of Employees: Less than 10
Activities developed: Research, Education.
The SpeechLab at the Technical University of Liberec was established in
1993, following up a longer tradition of research activities in the speech
processing area at this institute. The group is led by Jan Nouza, who has
been involved in the speech research for 15 years.
Our main interest has been focused on speech recognition with applications
towards real-time recognition systems, dialogue systems, information over
telephone, aids for the handicaped and tools supporting education.
In 1994 we completed the first Czech prototype of a discrete-utterance
speaker-independent recognition system based on the fast implementation
of the CDHMM technique on a PC.
In 1995 an improved version of the system was used in the design of
the first voice dialogue system operating in Czech. The system
provided a basic information about coach departures in the city of
In 1996 we developed a prototype of a visual-feedback system
applicable as an aid for deaf people in training their speech
At the Eurospeech97 conference we presented a unique system for
visualizing speech data and speech recognition algorithms. The system
named VISPER includes modules like 'Signal Profiler', 'DTW Explorer'
and 'Visual Markov' that make teaching and learning speech
recognition techniques quite easy.
Recently we have been developing a telephone-operated speech dialogue system
providing public information about sport and cultural events in our