Title :
Validating different flexible vocabulary approaches on the Swiss French PolyPhone and PolyVar databases
Author :
Constantinescu, Andrei ; Bornet, Olivier ; Caloz, Gilles ; Chollet, Géard
Author_Institution :
Dalle Molle Inst. for Perceptual Artificial Intelligence, Martigny, Switzerland
Abstract :
Validates the flexible vocabulary approach for speaker-independent isolated-word and connected-word 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 the advantages and disadvantages of both proposed subword units against common whole-word HMMs
Keywords :
database management systems; hidden Markov models; languages; software performance evaluation; speech recognition; vocabulary; PolyPhone database; PolyVar database; Swiss French language; diphones; flexible vocabulary approaches; performance; phonemes; recognition rates; speaker-independent connected word recognition; speaker-independent isolated word recognition; subword units; training data; whole-word hidden Markov models; Artificial intelligence; Databases; Frequency; Hidden Markov models; Monitoring; Natural languages; Speech recognition; Telephony; Training data; Vocabulary;
Conference_Titel :
Spoken Language, 1996. ICSLP 96. Proceedings., Fourth International Conference on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-3555-4
DOI :
10.1109/ICSLP.1996.607265
