Fourth European Conference on Speech Communication and Technology

Madrid, Spain
September 18-21, 1995

On Incorporating Phonemic Constraints in Hidden Markov Models for Speech Recognition

R. N. V. Sitaram, Thippur Sreenivas

Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, India

Phonemes have characteristic properties stich as unique temporal structure, context sensitive behaviour and specific duration etc. Phoneme models should incorporate such constraints to provide better classification accuracy. In this paper these phonemic properties are incorporated into a HMM based phoneme recognizer with the addition of several degrees of freedom to the HMM state. The resulting models have shown improved performance on the TIMIT database.

Full Paper

Bibliographic reference.  Sitaram, R. N. V. / Sreenivas, Thippur (1995): "On incorporating phonemic constraints in hidden Markov models for speech recognition", In EUROSPEECH-1995, 775-778.