4th International Conference on Spoken Language Processing

Philadelphia, PA, USA
October 3-6, 1996

Validating Different Flexible Vocabulary Approaches on the Swiss French PolyPhone and PolyVar Databases

Andrei Constantinescu, Olivier Bornet, Gilles Caloz, Gérard Chollet

Dalle Molle Institute for Perceptual Artificial Intelligence (IDIAP), Martigny, Switzerland

In this paper, we attempt to validate the flexible vocabulary approach for speaker independent isolated word and connected words recognition. We compare the performance of classical whole word HMMs against different sets of subword units. For this purpose, we model phonemes, diphones and words of the (Swiss) French language. The recognition rates obtained with phoneme models are monitored as we increase the amount of training data. The results of the described experiments validate the flexible vocabulary approach and show advantages and disadvantages of both proposed subword units against common whole word HMMs.

Full Paper

Bibliographic reference.  Constantinescu, Andrei / Bornet, Olivier / Caloz, Gilles / Chollet, Gérard (1996): "Validating different flexible vocabulary approaches on the Swiss French Polyphone and Polyvar databases", In ICSLP-1996, 2293-2296.