Fourth European Conference on Speech Communication and Technology

Madrid, Spain
September 18-21, 1995

Preliminary Experimentation of Different Methods for Continuous Speech Recognition in Spanish

Javier Ferreiros, Josť M. Pardo

Grupo de Tecnologia del Habla, Departamento de Ingenieria Electronica, Escuela Tecnica Superior de Ingenieros de Telecomunicacion, Universidad Politecnica de Madrid, Spain

In this paper we make first a comparative study of the recognition performance of different HMM training algorithms in Spanish: Discrete context-independent phone models, Discrete context-dependent (aglomerative-clustered generalized triphone) models and Semieontinuous context-independent and context-dependent models. We also propose two alternatives to improve the performance of the systems, the first one by using phone-class dependent modelling. The second one by preprocessing the training sentences in order to separate interword pauses and consequently train better contextual models. Preliminary experiments on a speaker dependent database, 1000 words vocabulary show good improvement of both systems compared to the baseline system.

Full Paper

Bibliographic reference.  Ferreiros, Javier / Pardo, Josť M. (1995): "Preliminary experimentation of different methods for continuous speech recognition in Spanish", In EUROSPEECH-1995, 1507-1510.