Sixth European Conference on Speech Communication and Technology

Budapest, Hungary
September 5-9, 1999

An Integrated System for Spanish CSR Tasks

L.J. Rodríguez, M. I. Torres, J. M. Alcaide, A. Varona, K. López de Ipina, M. Penagarikano, G. Bordel

Departamento de Electricidad y Electrónica, Facultad de Ciencias, Universidad del País Vasco / Euskal Herriko Unibertsitatea (UPV/EHU), Bilbao, Spain

This paper presents a new system for the continuous speech recognition of Spanish, integrating previous works in the fields of acoustic-phonetic decoding and language modelling. Acoustic and language models -separately trained with speech and text samples, respectivelyare integrated into one single automaton, and their probabilities combined according to a standard beam search procedure. Two key issues were to adequately adjust the beam parameter and the weight affecting the language model probabilities. For the implementation, a client-server arquitecture was selected, due to the desirable working scene where one or more simple machines in the client side make the speech analysis task, and a more powerful workstation in the server side looks for the best sentence hypotheses. Preliminary experimentation gives promising results with around 90% word recognition rates in a medium size word speech recognition task 1 .

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Bibliographic reference.  Rodríguez, L.J. / Torres, M. I. / Alcaide, J. M. / Varona, A. / López de Ipina, K. / Penagarikano, M. / Bordel, G. (1999): "An integrated system for Spanish CSR tasks", In EUROSPEECH'99, 951-954.